31 results on '"Cappelli, Jamil"'
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2. Some aspects of the ethanol stability of red deer milk (Cervus elaphus hispanicus): A comparison with other dairy species
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de la Vara, Juan Angel, Berruga, María Isabel, Cappelli, Jamil, Landete-Castillejos, Tomás, Carmona, Manuel, Gallego, Laureano, and Molina, Ana
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- 2018
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3. The bony horncore of the common eland (Taurotragus oryx): composition and mechanical properties of a spiral fighting structure
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Cappelli, Jamil, García, Andrés J., Kotrba, Radim, Gambín Pozo, Pablo, Landete‐Castillejos, Tomas, Gallego, Laureano, and Ceacero, Francisco
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- 2018
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4. Factors affecting antler growth period and casting date in red deer
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Ministerio de Economía, Industria y Competitividad (España), European Commission, Ministerio de Economía y Competitividad (España), Junta de Comunidades de Castilla-La Mancha, Gómez, José Ángel, Pérez-Barbería, Francisco J., García, Andrés J., Cappelli, Jamil, Chonco, Louis, Ceacero, Francisco, Pérez-Serrano, Martina, Landete-Castillejos, Tomás, Ministerio de Economía, Industria y Competitividad (España), European Commission, Ministerio de Economía y Competitividad (España), Junta de Comunidades de Castilla-La Mancha, Gómez, José Ángel, Pérez-Barbería, Francisco J., García, Andrés J., Cappelli, Jamil, Chonco, Louis, Ceacero, Francisco, Pérez-Serrano, Martina, and Landete-Castillejos, Tomás
- Abstract
[EN] Antlers are unique structures because they grow rapidly and are cast annually, representing an important energetic and mineral cost for deer. Variables related to the timing of antler growth, such as date of antler casting and length of growth period, therefore, should be affected by somatic resources and availability of food. We examined the effects of body and antler weight, age, and climatic variables, on antler casting date and the period of time antlers were grown as well as possible random effects of individual, year, cohort, and pedigree, based on 244 antlers in a population of 109 males of Iberian red deer (Cervus elaphus) over a 17-year study from 1999 to 2016. Body weight affected casting date, with heavier males casting antlers earlier than lighter males. Antlers also grew faster and were cast earlier among older males than young males. Antler weight influenced casting date and the duration of the growth period: males with heavier antlers cast them earlier and grow them faster than males with light antlers. Nevertheless, age and antler weight interacted; as such, older males grew their antlers slower and delay casting date because they produce heavier antlers, in contrast to younger males, where those with the heaviest antlers grow them faster and cast first. The date of the end of antler growth also influenced casting date, so that antlers that took the longest to develop were cast later than those that finished growing early. We conclude that older and heavier males cast their antlers earlier and grow them faster than younger and lighter males, likely to correlate the subsequent antler growth with the spring peak in plant nutrients, but that this early development is limited physiologically by the size of the antlers., [ES] Las cuernas son estructuras únicas porque crecen rápidamente y desmogan cada año, representando así un coste importante para los ciervos. Por lo tanto, las variables relacionadas con la cronología de su crecimiento, tales como la fecha de desmogue o la duración del periodo de crecimiento, deberían verse afectadas por los recursos corporales del macho, así como por la cantidad de alimento disponible. Examinamos los efectos de la masa corporal y de las cuernas, la edad y las variables climáticas sobre la fecha de desmogue y la duración del crecimiento de las cuernas, así como los posibles efectos aleatorios del individuo, año, cohorte y pedigrí utilizando 244 cuernas en una población de 109 machos de ciervo ibérico (Cervus elaphus) a lo largo de 17 años de estudio desde 1999 hasta 2016. El peso corporal afectó a la fecha de desmogue, siendo los machos más pesados los que desmogan antes en relación a los más ligeros. Las cuernas también crecieron más rápido y fueron desmogadas antes entre los machos más viejos en comparación con los más jóvenes. El peso de la cuerna afectó a la fecha de desmogue y el periodo de crecimiento de la misma; machos con cuernas más pesadas desmogaron antes y las desarrollaron más rápido que machos con cuernas ligeras. En cualquier caso, la edad y peso de las cuernas interaccionaron y así, los machos de más edad ralentizan el crecimiento de las cuernas y retrasan la fecha de desmogue conforme desarrollan cuernas más pesadas, al contrario de los machos más jóvenes, los cuales desarrollan sus cuernas más rápido y desmogan antes cuanto más pesadas son las mismas. La fecha de final de crecimiento de las cuernas también afectó a la fecha de desmogue, de modo que los machos cuyas cuernas tardaron más tiempo en desarrollarse fueron los que más tarde desmogaron. Concluimos que los machos de más edad y más peso desmogan sus cuernas antes y las hacen crecer más rápido, posiblemente para correlacionar el crecimiento de la siguiente cuerna con el pic
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- 2022
5. Factors affecting antler growth period and casting date in red deer
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Gómez, José Ángel, primary, Pérez-Barbería, Javier, additional, García, Andrés José, additional, Cappelli, Jamil, additional, Chonco, Louis, additional, Ceacero, Francisco, additional, Pérez-Serrano, Martina, additional, and Landete-Castillejos, Tomás, additional
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- 2021
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6. Effects of Lysine and Methionine supplementation on first antler growth in fallow deer (Dama dama)
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Ny, Veit, Kotrba, Radim, Cappelli, Jamil, Bureš, Daniel, Clar, Mechie A., García, Andrés J., Landete-Castillejos, Tomás, Bartoň, Luděk, and Ceacero, Francisco
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- 2020
- Full Text
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7. Calidad de los trofeos en rumiantes cinegéticos: desde estudio de la mecánica a las propiedades estructurales, a la composición mineral y caracterización del trofeo
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Cappelli, Jamil
- Subjects
Investigación biológica - Abstract
Nowadays, hunting plays a very important role in the conservation of biodiversity; and is considered a good tool to preserve the biological heritage and an important source of sustainable economic growth. Thus, hunting is a recreational activity which generates wealth and employments in depressed rural context. Moreover, the hunting sector seems to have a large turnover of money and it represents an important sector in the boundary of agrarian and wildlife related industry of European states. The Spanish example showed that the hunting sector employs more than 186,000 people and suppose a 0.3% of the GDP of Spain, and according to some estimates, a turnover equal to of 6,475 M€ that has a fiscal return of 614 M€. Moreover, the hunting permissions were 851,894 with an economic value of 20,5 M€; and only the red deer as species moves about 25,6 M€. Other authors estimate that in Spain, game estates have an economic impact which would range between 665 and 2,600 M€ (estimated based on USA study for economic impact for deer farm and per animal, respectively). In Spain the hunting estates are approximately 3,000, with an average surface of 1,000 ha, and the estimated total number of red deer is almost 650,000. As a matter of fact, European ungulate species represent an immense potential resource, not only in terms of biodiversity but also in economic terms. Economic estimates, based on economic impact per animal and per farm in USA study, assess an impact of 1120 M€ at the level of the EU farming industry (with 280,000 deer farmed in 10,000 farms, FEDFA data). At the present, trophy is the main objective of big game with a secondary use of meat (the economic estimation is 45 M€ for meat). In the commercial market, larger antlered males are more valuable to private landowners, and one of the most used criteria for selecting animals for future trophies is the length of the trophy's beam. Following these lines in the deer production, already in the past, our research group carried out various studies on wild and bred populations of red deer. The aim was to understand the effects of management and the effects of environmental factors on animal growth and the growth of their antlers. For this reason, a study protocol was developed using as parameters the quality of the trophy, intended as a tool for analysing the quality of a deer or, more generally, a herd of deer. This protocol provides for the study of the mechanical and structural characteristics of the trophy, as well as its mineral content. In this thesis we will examine these concepts in different subspecies of red deer, and moreover, for the first time, we will use this method of study on other species that play an important role in the world of hunting and wildlife production, at international level. This thesis is focused on 4 studies completed on distinct species of ungulates included between Bovidae and Cervidae. The species included are: the red deer (with two subspecies: Cervus elaphus hispanicus and Cervus elaphus corsicanus), the roe deer (Capreolus capreolus) with two populations subject to different diets and habitats, and finally an African bovid (Taurotragus oryx), which it has considerable importance in the hunting world as well as for the production of meat on farms, especially in New Zeland, USA and South Africa; the latter country, only in the northern regions, has farms with about 30,000 animals. These species and subspecies have a strong faunistic-hunting interest; moreover, some of them are under the protection and management programs, in order to improve the coexistence between man and ungulates. The main aims of this thesis are the characterization of the trophies and the analysis of their quality; for this reason the mechanical properties (Young's Modulus of elasticity= E; Bending Strength= BS; Work under the curve= W; Impact energy= U), structural characteristics of the bone tissue of the antlers and the mineral content were analysed, to determine: 1) the relationship between mineral composition, mechanical properties and function and type of growth (continuos or seasonal) of the Cervidae and Bovidae cranial appendages; 2) interspecific common patterns of differences; 3) the relationship between composition and mechanical properties in a wide frame of different species. In the first research work, for the first time, the morphological characteristics and the mechanical and structural properties and the mineral content of the Sardinian deer's antlers were described (Chapter 5.1). This subspecies of the red deer is distributed on the islands of Sardinia and Corsica, and currently the population is increasing (4270 animals); since in the past they suffered from excessive hunting pressure, this subspecies is currently protected by Italian and European law. However, the protection status of the species is causing problems of interaction between the deer and the anthropic activities present in the area. For this reason, probably in a future it will be necessary to carry out a population management even through the controlled use of selective hunting. Given that this study is the first to assess the characteristics of the antlers of this species, initially the external morphological characteristics of the trophy were assessed, using antlers of 35 adult deer and 26 subadults. The antlers were collected within a protected area where the Sardinian deer is widely distributed ("Sette Fratelli" forest complex). The differences between subadults and adults were easily distinguishable: the adult trophy was heavier, wider and with more tines. Compared to other European populations, the Sardinian deer had a trophy with a lower weight and fewer tines (only 20% of the antler have three tines, while in red deer of the Italian peninsula three-tined trophies appear in more than 40% of cases). Compared to the Spanish deer, the Sardinian deer presented lower values for weight (-65%), length (-26%), burr perimeter (-30%) and length of the first tine (-45%). Subsequently, 12 antlers of adult deer were analysed in more depth, selected according to the morphology that characterizes the typical trophy of an adult Sardinian deer. On this set of antlers, the mechanical tests, the analysis of the internal structure and thet of the mineral profile were made; using cortical bone samples from 4 different positions along the vertical axis of trophy. The results showed that the bone tissue of the Sardinian deer has lower values for the average thickness of the cortical tissue, for the mechanical properties as stiffness (E) and work to fracture (W) and for the ash content; this was probably due to a lower quality diet that is reflected in a bone tissue with non-optimal characteristics compared to other sub-species of cervids. Even the mineral content turned out to be different compared to the Spanish deer. Probably the Sardinian deer follows the theory of the "phenotypic maintenance model", where phenotypic plasticity is driven through efficient growth models under the effect of restrictive ecological factors (as can be a Mediterranean environment). Moreover, the Sardinian deer may be subject to the effect of insular dwarfism, in which a species is smaller than other populations of the same species distributed on land. Finally, the discussion of this article also commented on the positive consequences of a selection hunt for this sub-species of deer, once its limit of spread on the island was reached, thus favouring also the economic growth of areas natural marginal. Following the aim to compare different species, the second research (Chapter 5.2) concerned, for the first time, the study of two different roe deer populations subject to different habitat and management conditions. Sets of antlers from an extensive open-breeding farm near Prague (Czech Republic) and antlers from a closed-breeding farm of Murcia (Spain) were analysed. The animals of the Czech Republic lived in a vast area with mixed forest-cultivated cover; food supplementation was present only in a few cases, and the natural vegetation was covered by snow during the period of growth of the antlers for this species (winter). In contrast, the population of Iberian roe deer was managed more carefully, with a diet that provided food supplements throughout the year and a vegetative cover also continuous throughout the year. Therefore, the objective of this scientific study was to study differences in trophy characteristics (structural- mechanical qualities and mineral content of cortical bone tissue); in order to observe the effects of a very different management of two populations of the same species that lived in a very different habitat. A secondary aim was to compare the effects of an optimal/poor diet in the roe deer with similar studies in the antlers of red deer. From each analysed antler, samples were extracted from two different positions, along the trophy beam (at the base and near the upper tip). The results showed that the Czech's antler set showed lower values for the size of the trophy: such as the length of the beam (-20%), the weight of the trophy (-130%), and therefore, lower score for the trophies (-24.3%). In contrast, the structural properties (cortical bone width = CBD% and cortical bone area = CBA%) are significantly higher in the Czech population. The two populations have different mechanical properties: the Spanish roe deer had a greater W and U (+19% and +72%, respectively), while the Czech roe deer offset its deficiencies with a greater cortical area and higher mechanical values for BS (+16%) and E (+12%). The mineral profile showed non-homogeneous differences: the roe deer of the Czech Republic had a higher value for ash content, Ca, K, P, Cr, Li, Sr and Zn; while the Spanish roe deer had higher values for Na, Mn, Tl and for the Ca/P ratio. In addition to the origin, the sampling position also has an effect on the observed variables; through the GLM it was possible to observe that for the values of the mechanical properties there was a variability of 27% for E, 36% for BS, 38% for W, 49% for U; for the structure the models explained a 55% of the CBDcm variability. For minerals, only Zinc was affected by the position (48% variability in GLM models); this mineral was also 25% higher in the antlers of the Czech Republic, perhaps due to a greater physiological stress during the growth of their trophy. In relation to the differences in the mineral profile between the two sampling positions, and the relationship with the physiological stress of the growth of the antler, there were no significant differences for both studied populations, probably because the roe deer's antlers is small, considering the body mass of this species. Since the group of Spanish animals was bred in optimal conditions with mineral supplements and continuous vegetative cover, while the Czech group grew in a poorer habitat, we concluded that these results support the hypothesis that a rich diet is reflected in the growth of the antlers, and that the antler can be considered an indicator of the quality of the environmental conditions. In the third scientific study (Chapter 5.3) we aimed at comparing the previous studies and others in antlers with a similar study in the horn of a bovid, thus, for the first time, the bone nucleus belonging to the horn of the Common Eland was characterized, as example of bovid horn. The trophy of these African bovids has a spiral shape, with an evident thickening that, like a helix, rises from the base to the tip. Moreover, as characteristic for the bovid family, its trophy consists of a bony core (which remains moist), an outer keratin case and a membranous tissue interposed between these two components. In this case, samples of the core bone tissue were made in 4 sequential positions, starting from the base and climbing the vertical axis of the horn. Eight bony cores of different animals raised in an experimental breeding farm in Prague were used. The main objective was to observe the mechanical differences and the mineral content along the vertical axis of the horn, and for this, for each position, two bony bars were extracted for the mechanical tests and subsequent tests on mineral content, ash and bone density. Moreover, in the first position, at the base of the horn, the differences in the mechanical yields between the central standard bone and the bone tissue forming part of the characteristic spiral of the horn were studied. The results showed that the density and ash content decreased, from the base to the tip of the horn (-32% and -36%, respectively). Also, the mechanical properties achieved a similar decreasing gradient, but only the impact energy showed significant differences (U= -48%). This strong difference between horn areas was due to the different mechanical function and the characteristics of the material and microstructure. For the mineral profile, there are differences depending on the observed mineral: the concentrations of some of these significantly increased, rising from the base to the tip (Se= +4%, Cu= +84%, K= +16%), while other minerals decreased (Mg= -33%, Mn= -31%). This species, as in red deer, showed a similar dynamic of minerals: the content of Ca and Na decreased in the proximal-distal direction, while K showed an increase. Furthermore, our results followed the "gradient due to differential fighting stress within the horn" hypothesis; where the most stressed region of the horn (the one subject to bear more deformations) is that next to the skull of the animal; and this would explain why this region is best designed to support mechanical stress during thrusts and twists, in males fight. The mechanical and mineral profile variables, observed between the standard bone and the spiral horn region, showed no great differences, only some mechanical properties were weaker in the spiral bone tissue (W= -300%, BS= -153%, U= -118%). The most plausible explanation was that the weaker properties of the spiral region serve to deflect the transverse mechanical stresses suffered by the bone tissue during torsional collisions and pushes, with other males of the species. Moreover, another hypothesis was that a larger surface of the spiral could avoid slippage/rotation of the horny keratin sheath with respect to the internal bone nucleus, in the composite structure of the horns in Bovidae. Finally, the fourth scientific study (Chapter 6.1), is part of a miscellaneous study, although in the line of this thesis, because it showed the effects in the diet of supplementation of an interesting mineral, manganese, in deer antler composition and mechanics. The study followed the steps already marked in previous studies of our group, in which it was possible to observe how the mineral content and the quality of the food are reflected on the composition and mechanical properties of the bone tissue of the antlers of adult and young Iberian deer (yearlings). This study confirmed the hypothesis that manganese supplementation also play an important role in the development of the antlers (a previous study assessed effects of Mn deficiency). The role of the Manganese was studied through a supplementation by injections of 4% Gluconate of Manganese. Nineteen adult and ten yearling animals were used, which were distributed between the control group and the group subjected to weekly injections; the experiment lasted from January to mid-August (the period of antler growth). A balanced diet was the same for all individuals, so the manganese supplementation may show effects on the growth of antlers of well-fed animal. The antlers, once cleaned and fully grown, were cut in September, and samples were taken in four positions along the main beam for adults and two positions for the young deer (base and tip of these smaller antlers). The results showed that young deer, compared to adults, have lower values for mechanical yields, structural features (less than the average thickness of cortical bone) and mineral content of bone tissue; in both groups the level of Mn increased in the groups of treated animals (2.5 times in the young and 2.3 times in the adults). The yearlings did not show significant results in the mineral content (only for Fe and Mn) between the control and the treated group, probably because these animals were subject to the strong constraint of the effort of their growth. Consistent with this hypothesis, there was a minor influence of supplementation in the rest of characteristics of the antlers (mechanical properties and structure). The treated adult deer, in contrast, showed that body weight increased by 10% less than the control group during the trial. In addition, treated adults showed higher content of Ca (+8%), P (+10%), Na (+14%), K (+47%), Se (+142%) and Cu (+29%); while Si was the only one decreasing. Regarding mechanical properties, adults showed a significant increase of +11.8% in U. To study the effects of animal weight and Mn supplementation, GLMs were used: it was observed that supplementation has an effect on Co, K, Mn, Se and Si; while only the weight of the animal has effect on the CBD, on antler's length, the density of the bone, E, BS and on the content of the Zn. The difference between the base and the tip of the antlers, which shows the effort of the animal for the growth of the trophy, showed no significant differences in the mineral profile (only for the content of the Mn); in the distal position an increase of 16% of the W was observed, only for treated animals, after having checked for the effect of the weight of the animals. The results obtained in this study were very similar to a previous study carried out by our own group, assessing antlers grown in two years differing strongly in late winter frost (February). Thus, decrease in the content of ash, Ca, P, Na, Co, Se and an increase in Si content was observed in antler set grown by deer feeding on plants during exceptional frosts. The study concluded that a general antler breakage due to reduced cortical thickness, add change in mineral composition in the year of late winter frosts was actually caused by a reduction in Mn content in the plants, likely similar to Mn deficiency in deer diet. That is exactly the opposite to Mn supplementation, which resulted in logical opposite effects in the antler characteristics (Mn hypothesized deficiency vs. current Mn supplementation). In conclusion, it can be said that the characterization of the trophies through the study of the mechanical properties, the structural characteristics and the mineral profile of the bone tissue of the trophies themselves can be an excellent tool for the management of both wild and bred populations. Moreover, with the studies carried out in this thesis, it is shown that this method of study can also be applied to Bovidae or other species of Cervidae.
- Published
- 2020
8. Smaller does not mean worse: variation of roe deer antlers from two distant populations in their mechanical and structural properties and mineral profile
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European Commission, Ministerio de Economía y Competitividad (España), Czech University of Life Sciences Prague, Cappelli, Jamil, Ceacero, Francisco, Landete-Castillejos, Tomás, Gallego, Laureano, García, Andrés J., European Commission, Ministerio de Economía y Competitividad (España), Czech University of Life Sciences Prague, Cappelli, Jamil, Ceacero, Francisco, Landete-Castillejos, Tomás, Gallego, Laureano, and García, Andrés J.
- Abstract
Antler size, structure, composition and mechanics have been shown to reflect nutrition, climate and body effects in red deer, but studies have only assessed effects on size in the roe deer (Capreolus capreolus). Roe deer show little sexual dimorphism, lower inter‐male fighting and could form groups during part of the year but does not form harems, in contrast to red deer. Thus, it is interesting to assess how nutrition and habitat affects investment in antlers as compared to red deer. Antlers were collected from adult males of two game estates differing in location, climate and management: 13 from the south‐east of Spain (mild winter, hot summer, dry habitat and rich supplementary feeding), and 10 specimens came from central‐southern part of the Czech Republic (snowy winter, mild summer, humid habitat and limited supplementary feeding). After measuring whole‐antler parameters, a destructive sampling was performed to obtain a full‐transversal section and cortical bone samples from two sampling position along the main beam. Then bone structure, mechanical properties (three‐point bending test, impact test) and the mineral profile were studied. Roe deer from Spain had heavier and longer antlers than Czech roe deer. Their bone material had a higher mechanical quality, although Czech roe deer compensated by developing antlers with thicker walls. Mineral composition also differs, particularly by greater contents in Czech antlers in 3 minerals associated with nutrient stress: Fe, K and Zn. We concluded that the differences found between populations may be caused by differences in habitat quality and diet, in a similar way as reported for red deer, despite interspecific differences. Our study suggests that habitat affects antler parameters and, as previous results in red deer, suggests that improving diet quality may affect size, composition and mechanical quality of antler material. Certainly, antlers of roe deer provide information useful for population management.
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- 2020
9. What do rates of deposition of dental cementum tell us? Functional and evolutionary hypotheses in red deer
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Ministerio de Economía y Competitividad (España), Junta de Comunidades de Castilla-La Mancha, European Commission, Ministerio de Economía, Industria y Competitividad (España), Natural Environment Research Council (UK), Scottish National Heritage, Pérez-Barbería, Francisco J., Guinness, F. E., López-Quintanilla, María, García, Andrés J., Gallego, Laureano, Cappelli, Jamil, Serrano, Martina P., Landete-Castillejos, Tomás, Ministerio de Economía y Competitividad (España), Junta de Comunidades de Castilla-La Mancha, European Commission, Ministerio de Economía, Industria y Competitividad (España), Natural Environment Research Council (UK), Scottish National Heritage, Pérez-Barbería, Francisco J., Guinness, F. E., López-Quintanilla, María, García, Andrés J., Gallego, Laureano, Cappelli, Jamil, Serrano, Martina P., and Landete-Castillejos, Tomás
- Abstract
Cementum is a bone connective tissue that provides a flexible attachment for the tooth to the alveolar bone in many mammalian species. It does not undergo continuous remodelling, unlike non-dental bone, which combined with its growth pattern of seasonal layering makes this tissue uniquely suitable as a proxy for tracking changes in body repair investment throughout an animal´s life. We tested functional and sexual selection hypotheses on the rate of cementum deposition related to the highly polygynous mating strategy of red deer. We used a sample of 156 first lower molars from wild Scottish red deer of known age between 1 and 17 years old, approximately balanced by sex and age class. Cementum deposition on the inter-radicular pad increased with age at a constant average rate of 0.26 mm per year, with no significant differences between sexes. Cementum deposition was independent of (i) tooth wear, other than that associated with age, and (ii) enamel and dentine micro-hardness. The results partially supported the hypothesis that the main function of cementum is the repositioning of the tooth to maintain opposing teeth in occlusion. However, teeth that had more wear or males´ teeth that had faster rates of tooth wear than those of females did not present the expected higher rates of cementum deposition.
- Published
- 2020
10. Effects of Lysine and Methionine supplementation on first antler growth in fallow deer (Dama dama)
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Czech University of Life Sciences Prague, Ministry of Agriculture of the Czech Republic, Ny, Veit, Kotrba, Radim, Cappelli, Jamil, Bureš, Daniel, Clar, Mechie A., García, Andrés J., Landete-Castillejos, Tomás, Bartoš, Ludek, Ceacero, Francisco, Czech University of Life Sciences Prague, Ministry of Agriculture of the Czech Republic, Ny, Veit, Kotrba, Radim, Cappelli, Jamil, Bureš, Daniel, Clar, Mechie A., García, Andrés J., Landete-Castillejos, Tomás, Bartoš, Ludek, and Ceacero, Francisco
- Abstract
Amino acid supplementation in cervids is an almost unexplored research area. Lysine (Lys) and Methionine (Met) are the two amino acids considered as limiting for ruminants and Lys supplementation shows good potential for increased antler growth as it is the main component of collagen and a bone tissue precursor. However, several studies in other ruminants have shown greater effects when simultaneously supplementing Lys + Met. Two experiments based on Lys and Met supplementation during first antler growth were conducted during two consecutive years. Each experiment involved 45 yearling fallow bucks distributed in three groups, balanced by weight: Exp.1: Pasture, Pasture + Barley (0.2 kg/animal per day), and Pasture + Barley + Lys (5 g/animal per day); Exp.2: Pasture + Barley (0.5 kg/animal per day), Pasture + Barley + Lys (9 g/animal per day), and Pasture + Barley + Lys + Met (9 and 3 g/animal per day, respectively). Lys supplementation during the first experiment did not improve any antler characteristics (P 0.05). However, in the second experiment, both Lys (9 g) and Lys + Met treatments had positive effects on the external antler characteristics (P = 0.013), antler weight (P = 0.061) and particularly on the burr perimeter (P = 0.008), which is crucial for antler size in following years. The results also suggest a stronger positive effect of amino acid supplementation on antler growth when the animals have a low performance in the presence of poorer pasturing situation.
- Published
- 2020
11. Heat stress reduces growth rate of red deer calf: Climate warming implications
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Junta de Comunidades de Castilla-La Mancha, Ministerio de Economía y Competitividad (España), Pérez-Barbería, Francisco J., García, Andrés J., Cappelli, Jamil, Landete-Castillejos, Tomás, Serrano, Martina P., Gallego, Laureano, Junta de Comunidades de Castilla-La Mancha, Ministerio de Economía y Competitividad (España), Pérez-Barbería, Francisco J., García, Andrés J., Cappelli, Jamil, Landete-Castillejos, Tomás, Serrano, Martina P., and Gallego, Laureano
- Abstract
Climate models agree in predicting scenarios of global warming. In endothermic species heat stress takes place when they are upper their thermal neutral zone. Any physiological or behavioural mechanism to mitigate heat stress is at the cost of diverting energy from other physiological functions, with negative repercussions for individual fitness. Tolerance to heat stress differs between species, age classes and sexes, those with the highest metabolic rates being the most sensitive to stressing thermal environments. This is especially important during the first months of life, when most growth takes place. Red deer (Cervus elaphus) is supposedly well adapted to a wide range of thermal environments, based on its worldwide distribution range, but little is known about the direct effect that heat stress may have on calf growth. We assessed the effect that heat stress, measured by heat stress indices and physical environment variables (air temperature, relative air humidity, wind speed and solar radiation), have on calf and mother body weights from calf´s birth to weaning. We used 9265 longitudinal weekly body weight records of calf and mother across 19 years in captive Iberian red deer. We hypothesised that (i) heat stress in hot environments has a negative effect on calf growth, especially in males, as they are more energetically demanding to produce than females; and that (ii) the body weight of the mother through lactation should be negatively affected by heat stress. Our results supported hypothesis (i) but not so clearly hypothesis (ii). By weaning (day 143) calves growing under low heat stress environment grew up to 1.2 kg heavier than those growing in high heat stress environment, and males were more affected by heat stress than females. The results have implications in animal welfare, geographical clines in body size and adaptation to climate change.
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- 2020
12. Parenteral Cu supplementation of late-gestating and lactating Iberian red deer hinds fed a balanced diet reduces somatic cell count and modifies mineral profile of milk
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Ministerio de Economía y Competitividad (España), European Commission, Pérez-Serrano, Martina, García, Andrés J., Landete-Castillejos, Tomás, Cappelli, Jamil, Gómez-Nieto, J. A., Hidalgo, Francisco, Gallego, Laureano, Ministerio de Economía y Competitividad (España), European Commission, Pérez-Serrano, Martina, García, Andrés J., Landete-Castillejos, Tomás, Cappelli, Jamil, Gómez-Nieto, J. A., Hidalgo, Francisco, and Gallego, Laureano
- Abstract
This study describes the effects that Cu supplementation of late-gestating and lactating females (hinds) of Iberian red deer fed a balanced diet have on milk production, composition, and somatic cell count (SCC). Experimental hinds (n = 9) were subcutaneously injected every 42 days with Cu (0.83 mg Cu/kg body weight) from day 202 of gestation until the end of lactation (week 18). Control hinds (n = 8) were injected with a physiological saline solution with the same volume and at the same frequency as the experimental group. Copper supplementation decreased the SCC from 1.64 to 1.36 log 10/mL (p = 0.003) and modified the milk mineral profile. In particular, milk from hinds supplemented with Cu had more Ca (p = 0.02), Mg (p = 0.06), and K (p = 0.03) than milk from control hinds. However, Cu supplementation did not influence the Cu content of milk. Therefore, it can be concluded that Cu supplementation of hinds fed a balanced diet from late-gestation to the end of lactation could be a good strategy to reduce SCC and modify the mineral profile of milk increasing its Ca content.
- Published
- 2020
13. Factors affecting antler growth period and casting date in red deer.
- Author
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Gómez, José Ángel, Pérez-Barbería, Javier, García, Andrés José, Cappelli, Jamil, Chonco, Louis, Ceacero, Francisco, Pérez-Serrano, Martina, and Landete-Castillejos, Tomás
- Subjects
RED deer ,ANTLERS ,PLANT nutrients ,BODY weight ,BONE growth - Abstract
Antlers are unique structures because they grow rapidly and are cast annually, representing an important energetic and mineral cost for deer. Variables related to the timing of antler growth, such as date of antler casting and length of growth period, therefore, should be affected by somatic resources and availability of food. We examined the effects of body and antler weight, age, and climatic variables, on antler casting date and the period of time antlers were grown as well as possible random effects of individual, year, cohort, and pedigree, based on 244 antlers in a population of 109 males of Iberian red deer (Cervus elaphus) over a 17-year study from 1999 to 2016. Body weight affected casting date, with heavier males casting antlers earlier than lighter males. Antlers also grew faster and were cast earlier among older males than young males. Antler weight influenced casting date and the duration of the growth period: males with heavier antlers cast them earlier and grow them faster than males with light antlers. Nevertheless, age and antler weight interacted; as such, older males grew their antlers slower and delay casting date because they produce heavier antlers, in contrast to younger males, where those with the heaviest antlers grow them faster and cast first. The date of the end of antler growth also influenced casting date, so that antlers that took the longest to develop were cast later than those that finished growing early. We conclude that older and heavier males cast their antlers earlier and grow them faster than younger and lighter males, likely to correlate the subsequent antler growth with the spring peak in plant nutrients, but that this early development is limited physiologically by the size of the antlers. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
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14. Parenteral Cu Supplementation of Late-Gestating and Lactating Iberian Red Deer Hinds Fed a Balanced Diet Reduces Somatic Cell Count and Modifies Mineral Profile of Milk
- Author
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Pérez Serrano, Martina, primary, García, Andrés José, additional, Landete-Castillejos, Tomás, additional, Cappelli, Jamil, additional, Gómez, José Ángel, additional, Hidalgo, Francisco, additional, and Gallego, Laureano, additional
- Published
- 2020
- Full Text
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15. Meat quality of farmed red deer fed a balanced diet: effects of supplementation with copper bolus on different muscles
- Author
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Ministerio de Economía y Competitividad (España), European Commission, Diputación de Albacete, Programa Iberoamericano de Ciencia y Tecnología para el Desarrollo, Serrano, Martina P., Maggiolino, Aristide, Lorenzo, José M., De Palo, Pasquale, García, Andrés J., Landete-Castillejos, Tomás, Gambin, Pablo, Cappelli, Jamil, Domínguez, Rubén, Pérez-Barbería, Francisco J., Gallego, Laureano, Ministerio de Economía y Competitividad (España), European Commission, Diputación de Albacete, Programa Iberoamericano de Ciencia y Tecnología para el Desarrollo, Serrano, Martina P., Maggiolino, Aristide, Lorenzo, José M., De Palo, Pasquale, García, Andrés J., Landete-Castillejos, Tomás, Gambin, Pablo, Cappelli, Jamil, Domínguez, Rubén, Pérez-Barbería, Francisco J., and Gallego, Laureano
- Abstract
Supplementation with copper (Cu) improves deer antler characteristics, but it could modify meat quality and increase its Cu content to levels potentially harmful for humans. Here, we studied the effects of Cu bolus supplementation by means on quality and composition of sternocephalicus (ST) and rectus abdominis (RA) muscles (n=13 for each one) from yearling male red deer fed with a balanced diet. Each intraruminal bolus, containing 3.4 g of Cu, was administered orally in the treatment group to compare with the control group. Meat traits studied were pH at 24 h postmortem (pH24), colour, chemical composition, cholesterol content, fatty acid (FA) composition, amino acid (AA) profile and mineral content. In addition, the effect of Cu supplementation on mineral composition of liver and serum (at 0 and 90 days of treatment) was analysed. No interactions between Cu supplementation and muscle were observed for any trait. Supplementation with Cu increased the protein content of meat (P<0.01). However, Cu content of meat, liver and serum was not modified by supplementation. In fact, Cu content of meat (1.20 and 1.34 mg/kg for Cu supplemented and control deer, respectively) was much lower in both groups than 5 mg/kg of fresh weight allowed legally for food of animal origin. However, bolus of Cu tended to increase the meat content of zinc and significantly increased (P<0.05) the hepatic contents of sodium and lead. Muscles studied had different composition and characteristics. The RA muscle had significantly higher protein content (P<0.001), monounsaturated FA content (P<0.05) and essential/non-essential AA ratio (P<0.01) but lower pH24 (P<0.01) and polyunsaturated FA content (P=0.001) than the ST muscle. In addition, RA muscle had 14.4% less cholesterol (P=0.001) than ST muscle. Also, mineral profile differed between muscles with higher content of iron, significantly higher (P<0.001) content of zinc and lower content of calcium, magnesium and phosphorus (P<0.05) for ST muscle
- Published
- 2019
16. Antlers - Evolution, development, structure, composition, and biomechanics of an outstanding type of bone
- Author
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Ministerio de Economía, Industria y Competitividad (España), European Commission, Ministerio de Economía y Competitividad (España), Landete-Castillejos, Tomás, Kierdorf, Horst, Gómez, Santiago, Luna, Salvador, García, Andrés J., Cappelli, Jamil, Pérez-Serrano, Martina, Pérez-Barbería, Francisco J., Gallego, Laureano, Kierdorf, Uwe, Ministerio de Economía, Industria y Competitividad (España), European Commission, Ministerio de Economía y Competitividad (España), Landete-Castillejos, Tomás, Kierdorf, Horst, Gómez, Santiago, Luna, Salvador, García, Andrés J., Cappelli, Jamil, Pérez-Serrano, Martina, Pérez-Barbería, Francisco J., Gallego, Laureano, and Kierdorf, Uwe
- Abstract
Antlers are bony appendages of deer that undergo periodic regeneration from the top of permanent outgrowths (the pedicles) of the frontal bones. Of the “less familiar” bone types whose study was advocated by John Currey to gain a better understanding of structure-function relationships of mineralized tissues and organs, antlers were of special interest to him. The present review summarizes our current knowledge about the evolution, development, structure, mineralization, and biomechanics of antlers and how their formation is affected by environmental factors like nutrition. Furthermore, the potential role of antlers as a model in bone biology and several fields of biomedicine as well as their use as a monitoring tool in environmental studies are discussed.
- Published
- 2019
17. Better antlers when surrounded by females? The social context influence antler mineralization in pampas deer (Ozotozeros bezoarticus)
- Author
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Universidad de la República (Uruguay), Agencia Nacional de Investigación e Innovación (Uruguay), Universidad de Castilla La Mancha, Ceacero, Francisco, Villagrán, Matías, Gambin, Pablo, García, Andrés J., Cappelli, Jamil, Ungerfeld, Rodolfo, Universidad de la República (Uruguay), Agencia Nacional de Investigación e Innovación (Uruguay), Universidad de Castilla La Mancha, Ceacero, Francisco, Villagrán, Matías, Gambin, Pablo, García, Andrés J., Cappelli, Jamil, and Ungerfeld, Rodolfo
- Abstract
Antler growth is a costly yearly process supplied by daily nutrition and body reserves. Conditions for antler growth are rarely optimal. Thus, certain decrease in antler quality due to depletion of resources, known as physiological exhaustion, is frequently observed along the main beam. Testosterone promotes the mineralization in the last phase of antler growth, and its concentration change in male deer according to the socio-sexual environment: it is greater in single males housed only with females than in males housed only with other males (female effect). We hypothesised that the socio-sexual environment affect antler mineralization; especially in the top of the antler which is the last part mineralising and subjected to the described physiological exhaustion, but also the one mineralising when testosterone levels are higher. We tested this in antlers of pampas deer (Ozotoceros bezoarticus) from captive animals living in the two social contexts described. All the animals had an ad libitum high nutrition plan, so results are not due to nutritional differences. The antlers from males living with females suffered a lower physiological exhaustion (i.e., lower percent decrease in the top compared to the base of the antler) in the two most important minerals: Ca and P, but also similar tendencies in other bone-biology related trace elements like Sr and Li. Our results highlight that the socio-sexual environment, particularly living continuously in close contact with females, promotes antler mineralization probably through modifications in testosterone secretion.
- Published
- 2019
18. Evolution of blood serum mineral composition during antler growth and rut as consequence of Cu supplementation in captive red deer and its effects in mature antler composition
- Author
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Serrano, Martina P., Cappelli, Jamil, García, Andrés J., Gallego, Laureano, Landete-Castillejos, Tomás, Serrano, Martina P., Cappelli, Jamil, García, Andrés J., Gallego, Laureano, and Landete-Castillejos, Tomás
- Abstract
In the present study we assessed the effects of Cu supplementation and antler growth stage on mineral composition of serum and hard antler in red deer fed a balanced diet. Correlations between minerals were analysed for serum, for antlers, and between serum versus mature antler. Blood samples were drawn at Days –36, 54, 132 and 197 of the start of antler growth (SAG). Hard antlers were cut at Day 165 from SAG. The Cu supplemented group (n = 9) was injected with 0.83 mg Cu/kg of bodyweight, whereas the control group (n = 9) was injected with a physiological saline solution, both every 42 days between Days –36 (Cu supplied after blood sampling) and 132 from SAG. Supplementation with Cu increased (P < 0.05) the contents of P and Cu in serum but did not affect the antler mineral profile. Serum contents of Mg, Na, S, B and Cu increased during the antler growth, whereas contents of K, Al and Fe decreased in the same period (P < 0.001). At Day 54 from SAG in Cu group, serum P content correlated negatively with antler Ca content whereas Zn of serum and antler correlated positively (P < 0.05). The maximum number of correlations between the mineral profile of serum and hard antler was achieved at Day 132 from SAG (3.3, 4.7 and 12.9% for Days –36, 54 and 132, respectively). In conclusion, the analysis of specific minerals in serum could be used to detect in advance some mineral deficiencies in the antler.
- Published
- 2019
19. Better antlers when surrounded by females? The social context influence antler mineralization in pampas deer (Ozotozeros bezoarticus)
- Author
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Ceacero, Francisco, primary, Villagrán, Matías, additional, Gambín-Pozo, Pablo, additional, García, Andrés J., additional, Cappelli, Jamil, additional, and Ungerfeld, Rodolfo, additional
- Published
- 2019
- Full Text
- View/download PDF
20. The bony horncore of the common eland (Taurotragus oryx): composition and mechanical properties of a spiral fighting structure
- Author
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Universidad de Castilla La Mancha, Ministry of Agriculture of the Czech Republic, Czech University of Life Sciences Prague, Ministerio de Economía y Competitividad (España), Cappelli, Jamil, García, Andrés J., Kotrba, Radim, Gambin, Pablo, Landete-Castillejos, Tomás, Gallego, Laureano, Ceacero, Francisco, Universidad de Castilla La Mancha, Ministry of Agriculture of the Czech Republic, Czech University of Life Sciences Prague, Ministerio de Economía y Competitividad (España), Cappelli, Jamil, García, Andrés J., Kotrba, Radim, Gambin, Pablo, Landete-Castillejos, Tomás, Gallego, Laureano, and Ceacero, Francisco
- Abstract
Horns are permanent structures projecting from the head of bovids, consisting of a bony horncore covered with a layer of skin and then a sheath of keratinous material showing variability of growth intensity based on nutrition. From the point of view of the horn's mechanical properties, the keratin sheath has been widely studied, but only a few studies have considered the complete structure of the horn and fewer studies have focused on the bony horncore and its characteristics. The latter showed the important role of the bony core, when cranial appendages are subject to mechanical stress (as happens during fighting). The mechanical properties of bone material, along with its mineral profile, are also important, because they can show effects of different factors, such as nutrition and mineral deficiencies in diet. For this reason, eight horncores of captive common eland male were sampled at four positions along the vertical axis of the horn. The main aim was to study variation in mechanical properties and the mineral content along the vertical axis of the horncores. We further analysed whether the spiral bony ridge present on eland horncores differs in any of the studied properties from adjacent parts of the horncore. In other antelopes, spiral ridges on the horns have been proposed to increase grip during wrestling between males. Cross-sections of the horncores were performed at four positions along the longitudinal axis and, for each position, two bone bars were extracted to be tested in impact and bending. Moreover, in the first sampling position (the closest position to the base) two bars were extracted from the spiralled bony area. The resulting fragments were used to measure ash content, bone density and mineral content. Results showed that horn bone decreased along the vertical axis, in ash (−36%), density (−32%), and in impact work ‘U’ (marginally significant but large effect: −48%). The concentration of several minerals decreased significantly (Mg, Cr, Mn and
- Published
- 2018
21. Some aspects of the ethanol stability of red deer milk (Cervus elaphus hispanicus): A comparison with other dairy species
- Author
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Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Vara, Juan Angel de la, Berruga, María Isabel, Cappelli, Jamil, Landete-Castillejos, Tomás, Carmona, Manuel, Gallego, Laureano, Molina, Ana, Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Vara, Juan Angel de la, Berruga, María Isabel, Cappelli, Jamil, Landete-Castillejos, Tomás, Carmona, Manuel, Gallego, Laureano, and Molina, Ana
- Abstract
The ethanol stability, a freshness and heat stability indicator, of Iberian red deer milk was determined. Additionally, the interspecific differences in composition, physical, hygienic and technological parameters, in bulk tank milk obtained from red deer, sheep, goats and cows were compared. Red deer milk ethanol stability was similar to that of sheep milk; bovine milk was the most stable and goat milk the least. Ethanol stability was influenced by pH; within the range studied, increased pH increased stability, this effect being more noticeable in bovine milk than in milk from the other species. Milk composition presented evident differences among species, as did somatic cell counts, total bacterial count, pH and titratable acidity or density. The results suggest that milk of red deer is very similar to that of sheep, but is even richer in fat and proteins, making it an interesting and novel product with high potential in dairy industry.
- Published
- 2018
22. Effects of Mn supplementation in late-gestating and lactating red deer (Cervus elaphus hispanicus) on milk production, milk composition, and calf growth
- Author
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Ministerio de Economía, Industria y Competitividad (España), European Commission, Serrano, Martina P., Gambin, Pablo, Landete-Castillejos, Tomás, García, Andrés J., Cappelli, Jamil, Pérez-Barbería, Francisco J., Gómez-Nieto, J. A., Gallego, Laureano, Ministerio de Economía, Industria y Competitividad (España), European Commission, Serrano, Martina P., Gambin, Pablo, Landete-Castillejos, Tomás, García, Andrés J., Cappelli, Jamil, Pérez-Barbería, Francisco J., Gómez-Nieto, J. A., and Gallego, Laureano
- Abstract
This study describes the effects of Mn supplementation of 20 late-gestating and lactating Iberian red deer (Cervus elaphus hispanicus) females (hinds) fed a balanced diet on milk production and milk composition over the lactation period. Body weight of their calves at birth and at weaning was also evaluated. In addition, the effect of lactation stage was studied. For these purposes, 2 groups of hinds, one composed by 12 individuals (experimental) and the other by 8 individuals (con-trol) were compared. Experimental hinds were s.c. injected weekly with Mn (2 mg Mn/kg BW) from day 140 of gestation until the end of lactation (week 18; forced weaning by physical separation). Control hinds were injected with a physiological saline solution with the same volume and at the same frequency as the experimental group. Serum Mn content of hinds was assessed just before the first Mn injection and at week 10 of lactation to assess whether the injected Mn increased Mn concentrations in blood. No differences were observed for BW of calves at birth but calves whose mothers were injected with Mn tended (P = 0.07) to have greater gain of BW from birth to weaning in proportion of BW at birth compared to calves from control hinds. In addition, supplementation with Mn increased (P ≤ 0.05) daily milk production by 10.2%, milk fat content by 11.2%, and total fat yield by 17.8%. Also, milk from hinds supplemented with Mn had more Ca (P < 0.001) and P (P < 0.05) than milk from control hinds. Manganese supplementation did not influence Mn serum content when blood was analyzed at week 10 of lactation, but increased the Mn content of milk by 18.3% (P < 0.001). Lactation stage affected (P < 0.001) fat, protein, lactose, and DM. Their contents increased as lactation proceeded, and protein was substituted by fat. Therefore, results suggest that Mn supplementation of hinds is recommended, even when they are fed a balanced diet, to increase milk production and the content of fat, Ca, P, and Mn of mi
- Published
- 2018
23. Does Cu supplementation affect the mechanical and structural properties and mineral content of antler bone tissue on red deer?
- Author
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Landete Castillejos, Tomás, Gallego, Laureano, Cappelli, Jamil, Gambín Pozo, Pablo, García Díaz, Andrés José, Ceacero, Francisco, and Pérez, Martina
- Subjects
animal structures ,Mineral composition ,Antler bone tissue ,Cervus elaphus ,Mechanical properties ,Cu - Abstract
The main factors affecting the mechanical (and other) properties of bone, including antler, are the proportions of ash (especially Ca and P) and collagen content. However, some trace minerals may also play more important roles than would be expected, given their low levels in bone and antler. One such trace mineral is Cu. Here, we studied the effects of Cu supplementation on the mechanical and structural characteristics, and mineral content of antlers from yearling and adult (4 years of age) red deer fed a balanced diet. Deer (n = 35) of different ages (21 yearlings and 14 adults) were studied. A total of 18 stags (11 yearlings and 7 adults) were injected with Cu (0.83 mg Cu/kg BW) every 42 days, whereas the remaining 17 (10 yearlings and 7 adults) were injected with physiological saline solution (control group). The Cu content of serum was analysed at the beginning of the trial and 84 days after the first injection to assess whether the injected Cu was mobilized in blood. Also, the mechanical and structural properties of antlers and the mineral content in their cortical walls were examined at three (yearlings) or four (adults) points along the antler beam. The effect of Cu supplementation was different in yearlings and adults. In yearlings, supplementation increased the Cu content of serum by 28%, but did not affect antler properties. However, in adults, Cu supplementation increased the Cu content of serum by 38% and tended to increase the cortical thickness of antlers ( P = 0.06). Therefore, we conclude that, even in animals receiving balanced diets, supplementation with Cu could increase antler cortical thickness in adult deer, although not in yearlings. This may improve the trophy value of antlers, as well as having potential implications for bones in elderly humans, should Cu supplementation have similar effects on bones as those observed in antlers.
- Published
- 2017
24. Morphology, chemical composition, mechanical properties and structure in antler of Sardinian red deer (Cervus elaphus corsicanus)
- Author
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Cappelli, Jamil, Atzori, Alberto Stanislao, Ceacero, Francisco, Landete-Castillejos, Tomás, Cannas, Antonello, Gallego, Laureano, and García, Andrés J.
- Subjects
cervid, tines, wildlife characterization, Sardinia ,Tines ,animal structures ,Wildlife characterization ,Cervid ,Sardinia - Abstract
The deer population present in Sardinia and Corsica represents an endemic subspecies Cervus elaphus corsicanus. We describe for the first time the characteristics of cast antlers of Sardinian red deer from the forest complex Sette Fratelli, south-east part of the island. Moreover, we describe the material mechanical properties, the structural ones, and the mineral profile of antlers from adults, comparing them with the antler characteristics of the subspecies C. e. hispanicus examined exactly with the same methodology. Sixty-one deer casted antlers were collected and classified as belonging to adults (35) or sub-adults (26). A first part of the study described the common features of the antlers of sub-species C. e. corsicanus through the analysis of morphology in all deer antlers. Subsequently, a more detailed study used 12 adult deer antlers for a destructive analysis. Statistical comparisons were conducted using ANOVAs between characteristics of the two age subgroups, and using Pearson¿s correlation coefficients between the antlers morphological variables. In general, morphological antler measures had greater values in adults than in sub-adults. In comparison with Iberian deer, Sardinian adult antlers have a more simple structure with lower values in morphological features, mechanical properties and structural characteristics.
- Published
- 2017
25. Does Cu supplementation affect the mechanical and structural properties and mineral content of red deer antler bone tissue?
- Author
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Junta de Comunidades de Castilla-La Mancha, Ministerio de Economía y Competitividad (España), Gambin, Pablo, Serrano, Martina P., Gallego, Laureano, García, Andrés J., Cappelli, Jamil, Ceacero, Francisco, Landete-Castillejos, Tomás, Junta de Comunidades de Castilla-La Mancha, Ministerio de Economía y Competitividad (España), Gambin, Pablo, Serrano, Martina P., Gallego, Laureano, García, Andrés J., Cappelli, Jamil, Ceacero, Francisco, and Landete-Castillejos, Tomás
- Abstract
The main factors affecting the mechanical (and other) properties of bone, including antler, are the proportions of ash (especially Ca and P) and collagen content. However, some trace minerals may also play more important roles than would be expected, given their low levels in bone and antler. One such trace mineral is Cu. Here, we studied the effects of Cu supplementation on the mechanical and structural characteristics, and mineral content of antlers from yearling and adult (4 years of age) red deer fed a balanced diet. Deer (n=35) of different ages (21 yearlings and 14 adults) were studied. A total of 18 stags (11 yearlings and 7 adults) were injected with Cu (0.83 mg Cu/kg BW) every 42 days, whereas the remaining 17 (10 yearlings and 7 adults) were injected with physiological saline solution (control group). The Cu content of serum was analysed at the beginning of the trial and 84 days after the first injection to assess whether the injected Cu was mobilized in blood. Also, the mechanical and structural properties of antlers and the mineral content in their cortical walls were examined at three (yearlings) or four (adults) points along the antler beam. The effect of Cu supplementation was different in yearlings and adults. In yearlings, supplementation increased the Cu content of serum by 28%, but did not affect antler properties. However, in adults, Cu supplementation increased the Cu content of serum by 38% and tended to increase the cortical thickness of antlers (P=0.06). Therefore, we conclude that, even in animals receiving balanced diets, supplementation with Cu could increase antler cortical thickness in adult deer, although not in yearlings. This may improve the trophy value of antlers, as well as having potential implications for bones in elderly humans, should Cu supplementation have similar effects on bones as those observed in antlers.
- Published
- 2017
26. The bony horncore of the common eland (Taurotragus oryx): composition and mechanical properties of a spiral fighting structure
- Author
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Cappelli, Jamil, primary, García, Andrés J., additional, Kotrba, Radim, additional, Gambín Pozo, Pablo, additional, Landete-Castillejos, Tomas, additional, Gallego, Laureano, additional, and Ceacero, Francisco, additional
- Published
- 2017
- Full Text
- View/download PDF
27. Microdureza, microestructura y mineralización de la cuerna y fémur del Ciervo ibérico (Cervus elaphus hispanicus)
- Author
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Gómez, Santiago, Gambin, Pablo, Cappelli, Jamil, Luna, Salvador, García, Andrés J., Gallego, Laureano, and Landete-Castillejos, Tomás
- Abstract
Resumen del trabajo presentado al XX Congreso de la Sociedad Española de Investigación Osea y del Metabolismo Mineral, celebrado en Bilbao del 21 al 23 de octubre de 2015., [Introducción]: La cuerna de los ciervos es un apéndice craneal externo constituido por un hueso primario que está muerto y seco. Como material óseo, la cuerna tiene algunas propiedades mecánicas sobresalientes. En comparación con otros huesos del esqueleto, p.ej. el fémur, la cuerna posee mayor tenacidad y mayor energía de impacto; circunstancias que hacen de la cuerna un hueso difícil de romper, y apropiado para su función en la berrea cuando los machos luchan entre sí. [Objetivo]: Analizar la microdureza, la microestructura, el contenido de calcio-mineral, y la secuencia de mineralización de la cuerna en comparación con el fémur. [Material]: Tres cuernas de ciervos adultos y un fémur de vareto. [Método]: La microdureza se determinó con microindentación Vickers (IndentaMet 11100, Buehler) usando una carga de 25g/10s aplicada en la superficie pulida de muestras encastradas en plástico. La microestructura se estudió en cortes mineralizados de 100 μm con microscopía de polarización circular (mapas de orientación colágena en falso color), y en cortes teñidos. El contenido de calcio (g/100g) se determinó mediante espectrometría de emisión atómica con plasma acoplado inductivamente (ICP). La secuencia de mineralización se dedujo tras inyectar a los ciervos con calceína (5 mg/kg s.c.) en el día 117 del desarrollo de sus cuernas, y posteriormente localizando el marcaje en cortes mineralizados con microscopía de epifluorescencia y calculando el tiempo transcurrido desde la formación de las osteonas primarias a la caída del terciopelo. [Resultados]: La microdureza era mucho menor en las cuernas respecto del fémur (48%), y también el contenido de calcio (70%). En una misma cuerna ambos valores disminuían algo en dirección próximo-distal según la secuencia de mineralización. La microarquitectura de la cuerna difería notablemente respecto de la del fémur (fibrolaminar) al estar constituida por dos tipos de tejido óseos (no laminar y laminar) que se engarzan para formar un hueso compacto. [Conclusiones]: La microdureza de la cuerna es muy inferior a la del fémur. Dado que la microdureza representa una propiedad mecánica relacionada con la máxima carga elástica de un material, y en el hueso en parte también con el contenido de calcio, se apunta que las excepcionales propiedades mecánicas de la cuerna que hace difícil su fractura han de basarse sobre todo en su microestructura, baja mineralización, y en su composición orgánica de cemento (riqueza de uniones de sacrificio).
- Published
- 2015
28. Analysis of antler composition and mechanical properties reveal key micro-minerals for deer
- Author
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Landete-Castillejos, Tomás, García, Andrés J., Serrano, Martina P., Ceacero, Francisco, Cappelli, Jamil, Gambin, Pablo, Gallego, Laureano, Landete-Castillejos, Tomás, García, Andrés J., Serrano, Martina P., Ceacero, Francisco, Cappelli, Jamil, Gambin, Pablo, and Gallego, Laureano
- Abstract
Deer antlers, apart from a desired trophy, are one of the most incredible structures in animals. They are the only bone that grows out of the body, and this means that it is easily accessible to study bone biology, a characteristic that would make antlers end up sooner or later being used for medical studies. Not only that, they grow and are cast every year. This makes them incredibly costly: it is known from XIX century that antlers constitute from 1 to 5% of body weight, but our group has calculated that this means around 20% of the skeleton weight. The speed of growth is the largest of any animal tissue except cancer, achieving rates of 1 to 4 cm per day. This speed is so fast that the diet cannot support the need of minerals for the growing antler, so that a deer has to transfer this 20% of their skeleton from bones to antlers. This produces a process similar to osteoporosis in humans, with the sole difference that it is reversible: deer suffer this process of osteoporosis in the spring and summer of each year, and they recover in later summer and autumn. In fact, this well-known finding that deer undergo an osteoporosis-like process gave us a hint that there might be possible applications of antler studies to human medicine.
- Published
- 2016
29. Manganese supplementation improves antlers of adult deer even under a balanced diet
- Author
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Landete-Castillejos, Tomás, García, Andrés J., Cappelli, Jamil, Ceacero, Francisco, and Gallego, Laureano
- Subjects
animal structures - Abstract
Trabajo presentado a The International Scientific Conference on Deer Genetics and Management, celebrada en Sigulda (Latvia) el 6 y 7 de agosto de 2014., Mechanical properties, and in general, growth of antlers, has been thought to be mainly depending on Ca and P input. However, many other minerals can influence growth and mechanical performance in bones. Our research group examines mineral composition of antlers as a diagnostic tool to detect nutrition deficiencies, and also their effect in mechanical quality of the antler material, internal structure, density of cortical wall, and other antler characteristics. One of the most interesting minerals, although not the only one, seems to be manganese. In this presentation we remind early studies where a deficiency in manganese (and also phosphorus) detected in broken antlers naturally occurring in 2005, produced as a result a 30% reduction in antler weight, and a similar reduction in resistance to impact (impact energy), other mechanical properties, and thinner cortical wall. As a result of this experiment, we decided to examine the effects of manganese supplementation in spikers and adults of red deer under a balanced diet. Subjects were 29 deer of different classes of age (adult n=16, subadult n=3 , spiker n=10) that were divided into a control group (n=15) and a group subjected to injection (n=14). Antler mineral content (ashes, micro and macro minerals), mechanical properties (Work to peak force, Bending strength, Young's Modulus of elasticity) and structure (average cortical thickness, cortical bone's specific gravity, cortical bone ratio) were examined in to 4 different test points along the antler beam. Each variable has been related to treatment, class of age, weight and year of growth of the antlers in a statistical test based on General Linear Model. The results show that manganese supplementation did not produce any effects in spiker antlers beyond an increase in manganese content. However, in adults results on the overall mean of the antler show a clear effect of manganese supplementation increasing the content of Ca, Na, P, B, Co, Cu, K, Mn, Ni, Se, Si, but no effect on mechanical properties. An analysis on the top portion of the antlers, where the effects are shown more clearly, showed the same effect in mineral composition, but also a 16% increase in work to fracture, much greater than in the mentioned study in wild deer. Thus, manganese supplementation can improve mineral composition of antlers, structure and some mechanical properties despite animals having a balance diet. The results are important for mineral and feed supplements in deer, but they may also have implications for human health and bone biology.
- Published
- 2014
30. Manganese supplementation in deer under balanced diet increases impact energy and contents in minerals of antler bone tissue
- Author
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Junta de Comunidades de Castilla-La Mancha, Ministerio de Economía y Competitividad (España), Cappelli, Jamil, García, Andrés J., Ceacero, Francisco, Gómez, Santiago, Luna, Salvador, Gallego, Laureano, Gambin, Pablo, Landete-Castillejos, Tomás, Junta de Comunidades de Castilla-La Mancha, Ministerio de Economía y Competitividad (España), Cappelli, Jamil, García, Andrés J., Ceacero, Francisco, Gómez, Santiago, Luna, Salvador, Gallego, Laureano, Gambin, Pablo, and Landete-Castillejos, Tomás
- Abstract
Bone ash, collagen, Ca and P composition, are considered the main factors affecting mechanical properties in bones. However, a series of studies in bone and antler have shown that some trace minerals, such as manganese, may play a role whose importance exceeds what may be expected considering their low content. A previous study showed that a reduction in manganese in antlers during a year of late winter frosts led to generalized antler breakage in Spain, which included a reduction of 30% of cortical thickness, 27% reduction in impact energy, and 10% reduction in work to peak force. Starting for this observation, we experimentally studied the effects of manganese supplementation in adults and yearling (yearlings) red deer under a balanced diet. Subjects were 29 deer of different age classes (adult n = 19, yearlings n = 10) that were divided in a manganese injected group (n = 14) and a control group (n = 15). Antler content in ashes and minerals, intrinsic mechanical properties and cross section structure were examined at 4 points along the antler beam. A one way ANOVA (mean per antler) showed that in yearlings, manganese supplementation only increased its content and that of Fe. However, in adults, Mn supplementation increased the mean content per antler of Ca, Na, P, B, Co, Cu, K, Mn, Ni, Se (while Si content was reduced), and impact work but not Young's modulus of elasticity, bending strength or work to peak force. A GLM series on characteristics in the uppermost part examined in the antler, often showing physiological exhaustion and depletion of body stores, showed also a 16% increase in work to peak force in the antlers of the treated group. Thus, manganese supplementation altered mineral composition of antler and improved structure and some mechanical properties despite animals having a balanced diet.
- Published
- 2015
31. Manganese Supplementation in Deer under Balanced Diet Increases Impact Energy and Contents in Minerals of Antler Bone Tissue
- Author
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Cappelli, Jamil, primary, Garcia, Andrés, additional, Ceacero, Francisco, additional, Gomez, Santiago, additional, Luna, Salvador, additional, Gallego, Laureano, additional, Gambin, Pablo, additional, and Landete-Castillejos, Tomás, additional
- Published
- 2015
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