27 results on '"Del Valle, Tiago Antonio"'
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2. Nictemeral composition of corn plants: afternoon harvest decreases dry matter recovery and increases silage starch content and in vitro degradation/Composicao quimica de plantas de milho: colheita da tarde diminui recuperacao de materia seca e aumenta teor de amido na silagem e degradacao in vitro
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Tonin, Tiago Joao, Del Valle, Tiago Antonio, Pereira, Stela Naetzold, Skonieski, Fernando Reimann, Konzen, Giovana Luisa, Reis, Tassila Rubia Moreira, and Viegas, Julio
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- 2025
3. Effects of an immunomodulatory feed additive on feed intake behavior, skin temperature, and milk yield in dairy cows during the hot season
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Marques, Julia Avansi, Takiya, Caio S., Del Valle, Tiago Antonio, Grigoletto, Nathália T.S., da Silva, Guilherme G., and Rennó, Francisco P.
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- 2025
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4. Feeding reduced levels of trace minerals in proteinate form and selenium-yeast to transition cows: Performance, trace minerals, and antioxidant status, peripheral neutrophil activity, and oocyte quality
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Gomes da Silva, Guilherme, da Silva Dias, Mauro Sérgio, Takiya, Caio Seiti, Nunes, Alanne Tenório, Del Valle, Tiago Antonio, Grigoletto, Nathália Trevisan Scognamiglio, Batista, Camila Freitas, Santos, Kamila Reis, Della Libera, Alice Maria Melville Paiva, Rennó, Luciana Navajas, Koontz, Anne, Lobato, Daniel Navarro, Costa e Silva, Luiz Fernando, and Rennó, Francisco Palma
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- 2023
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5. Effect of Chemical and Microbial Additives on Fermentation Profile, Chemical Composition, and Microbial Populations of Whole-Plant Soybean Silage
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Gandra, Jefferson Rodrigues, primary, Takiya, Caio Seiti, additional, Del Valle, Tiago Antonio, additional, Pedrini, Cibeli de Almeida, additional, Gandra, Erika Rosendo de Sena, additional, Antônio, Giovani, additional, de Oliveira, Euclides Reuter, additional, Severo, Igor Kieling, additional, and Rennó, Francisco Palma, additional
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- 2024
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6. Introducing Multifunctional Forages to Redesign Pastoral Livestock Production Systems
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Pereira, Fabiellen, primary, de Oliveira, Renata, additional, Campana, Mariana, additional, Gregorini, Pablo, additional, Del Valle, Tiago Antonio, additional, Celidonio Pogliani, Fábio, additional, and de Morais, Jozivaldo Prudêncio Gomes, additional
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- 2024
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7. Can a Cattle and Sheep Mixed Model Based on Fecal Crude Protein Estimate the Feed Intake and Digestibility?
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Barreto, Mariana Trindade, primary, Comassetto, Danielli Santos, additional, Dornelles, Renata Rosa, additional, Castagnara, Deise Dalazen, additional, Del Valle, Tiago Antonio, additional, David, Diego Bitencourt, additional, and Azevedo, Eduardo Bohrer, additional
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- 2024
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8. In Vitro Evaluation of Potentially Edible Brazilian Trees and Shrubs in Ruminant Nutrition
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de Morais, Jozivaldo Prudêncio Gomes, primary, Campana, Mariana, additional, Gregorini, Pablo, additional, Garcia, Thainá Moreira, additional, Minussi, Júlia Franco de Aguiar, additional, Pereira, Stela Naetzold, additional, Pereira, Fabiellen Cristina, additional, and Del Valle, Tiago Antonio, additional
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- 2023
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9. Fermentation profile and chemical composition of Mombasa grass silage treated with chitosan and microbial inoculant.
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Campana, Mariana, de Morais, Jozivaldo Prudêncio Gomes, Garcia, Thainá Moreira, Capucho, Estefani, Nunes, Marjorye, Osório, Jesus Alberto Cardoso, Facco, Francine Basso, and Del Valle, Tiago Antonio
- Abstract
Context: The ensiling process presents losses that are associated with the fermentative profile, resulting in lower nutritional value, and lower aerobic stability of silages. Aims: This study aimed to evaluate the effects of chitosan and microbial inoculants addition in Mombasa grass (Megathyrsus maximus) silage (MGS) fermentation profile and losses, chemical composition, in situ degradation, and aerobic stability. Methods: Forty experimental silos (PVC tubing with 28-cm inner diameter and 25-cm height) were used in a randomised block (n = 5) design to evaluate the following treatments: (1) MGS without additives (control, CON); (2) MGS treated with 5.0 × 10
4 colony-forming units (CFU) of Lactobacillus buchneri (NCIM 40788) per gram of fresh matter (LBB); (3) MGS treated with 1.6 × 105 CFU of L. plantarum and 1.6 × 105 CFU of Pediococcus acidilactici per gram of fresh matter (LPP); and (4) MGS treated with 6 g/kg DM of chitosan (CHI). Key results: The treatments did not alter the pH, ammonia-N, butyric, and lactic acid concentrations in the silage. The use of LPP reduced the ethanol content, while CHI increased propionic and branched-chain fatty acids compared with other treatments. Fermentation losses and dry-matter recovery were not affected by treatments. Chitosan reduced the organic matter of the MGS in relation to the other treatments, without having an impact on the other variables of chemical composition. The treatments did not influence the in vitro degradation, nor the pH and temperature after aerobic exposure of the silage. Conclusions: Chitosan increases ethanol compared with homofermentative lactic acid bacteria inoculation and does not affect ammonia-N of Mombasa grass silage. In addition, chitosan and microbial inoculants have limited effects on Mombasa grass silage fermentation losses, nutritional value, and aerobic stability. Implications: Chitosan does not reduce fermentation losses or improve the nutritional value of grass silage. The ensiling process presents losses that are associated with the fermentative profile, resulting in lower nutritional value and lower aerobic stability of silages. The study evaluated the effects of adding chitosan and microbial inoculants to Mombasa grass (Megathyrsus maximus) silage. Chitosan altered some variables of the fermentation profile, but the treatments did not show a relevant effect on fermentation losses, chemical composition, and aerobic stability. [ABSTRACT FROM AUTHOR]- Published
- 2024
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10. Effects of homofermentative lactic acid bacteria and powdered molasses on fermentative losses, chemical composition and aerobic stability in whole-plant soybean silage.
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Ghizzi, Lucas Ghedin, Del Valle, Tiago Antonio, Zilio, Elissandra Maiara de Castro, Dias, Mauro Sérgio da Silva, Nunes, Alanne Tenório, Gheller, Larissa Schneider, de Paula e Silva, Tássia Barrera, Marques, Júlia Avansi, Grigoletto, Nathalia Trevisan Scognamiglio, Takiya, Caio Seiti, and Rennó, Francisco Palma
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MICROBIAL inoculants , *LACTIC acid bacteria , *SILAGE , *SILAGE fermentation , *MOLASSES , *LACTOBACILLUS plantarum , *LACTIC acid - Abstract
This study evaluated the effects of homolactic bacteria and molasses (MOL) in whole-plant soybean silage on dry matter (DM) losses, content of organic acids, bromatological composition, in situ degradation of DM and aerobic stability. Mini-silos (n = 200) were blocked (n = 5) by phenological stage and assigned into a 2×2 factorial treatment arrangement with 2 levels of microbial inoculation (INO, 0 or 105 colony forming units of Lactobacillus plantarum and Pediococcus pentosaceus per kg of fresh forage) and 2 levels of powdered MOL (0 and 40 g/kg fresh forage). Mini-silos were opened after 90 days of fermentation. Total losses were lower in silos with MOL. Whole-plant soybean ensiled with the combination of INO and MOL had the highest DM recovery. Adding MOL increased lactic acid content and decreased ammonia nitrogen content (marker of proteolysis), pH and buffering capacity. MOL reduced the contents of NDF. Silage with both INO and MOL had the highest DM content. MOL increased DM degradation. No effects were detected on aerobic stability. INO does not show positive effects on soybean silage nutritive quality when not associated with MOL. Molasses has a positive impact on whole-plant soybean silage by decreasing fermentation losses and pH, while increasing silage nutritive value. [ABSTRACT FROM AUTHOR]
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- 2023
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11. Effects of homofermentative lactic acid bacteria and powdered molasses on fermentative losses, chemical composition and aerobic stability in whole-plant soybean silage
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Ghizzi, Lucas Ghedin, primary, Del Valle, Tiago Antonio, additional, Zilio, Elissandra Maiara de Castro, additional, Dias, Mauro Sérgio da Silva, additional, Nunes, Alanne Tenório, additional, Gheller, Larissa Schneider, additional, de Paula e Silva, Tássia Barrera, additional, Marques, Júlia Avansi, additional, Grigoletto, Nathalia Trevisan Scognamiglio, additional, Takiya, Caio Seiti, additional, and Rennó, Francisco Palma, additional
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- 2022
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12. Forage production, morphological, and chemical composition of diploid and tetraploid cultivars of Italian ryegrass in hydromorphic soils
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Dornelles, Renata da Rosa, primary, Comassetto, Danielli dos Santos, additional, Faleiro, Eduardo Avelino, additional, Pinto, Augusto Gossmann, additional, Barreto, Mariana Trindade, additional, Rodrigues, Carine Rey, additional, Del Valle, Tiago Antonio, additional, and Azevedo, Eduardo Bohrer de, additional
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- 2021
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13. Chitosan level effects on fermentation profile and chemical composition of sugarcane silage
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Del Valle, Tiago Antonio, Antonio, Giovani, Zilio, Elissandra Maiara de Castro, Dias, Mauro Sérgio da Silva, Gandra, Jefferson Rodrigues, Castro, Filipe Alexandre Boscaro de, Campana, Mariana, and Morais, Jozivaldo Prudêncio Gomes de
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Fibra em detergente neutro ,Degradation ,Ethanol ,Neutral detergent fiber ,Etanol ,Chitin ,Degradação ,Quitina ,Acetic acid ,Ácido acético - Abstract
Foram avaliados os efeitos do aumento dos níveis de quitosana (CHI) sobre o perfil e as perdas fermentativas, a composição química e degradação in situ da silagem de cana-de-açúcar. Os tratamentos foram: 0, 1, 2, 4 e 8 g de CHI / kg de matéria seca (MS). Foram utilizados vinte silos experimentais (tubos de PVC com 28 cm de diâmetro e 25 cm de altura). Areia (2 kg) foi adicionada na porção inferior de cada silo para avaliar as perdas por efluentes e os silos foram pesados 60 dias após a ensilagem para calcular as perdas por gases. Amostras foram coletadas do centro da massa do silo para avaliar a composição química, degradação in situ, perfil fermentativo e a contagem de fungos e leveduras da silagem. Os dados foram analisados como um delineamento inteiramente casualizado e o efeito do tratamento foi decomposto usando regressão polinomial. A CHI aumentou linearmente a concentração de ácido acético e N-NH3, enquanto diminuiu a contagem de leveduras e bolores e a concentração de etanol. Os níveis intermediários de CHI (de 4,47 a 6,34 g/kg MS) mostraram os menores valores de perdas por efluentes, gases e totais. Houve efeito quadrático da CHI sobre o teor de carboidratos não fibrosos, fibra em detergente neutro e ácido e sobre a degradação in situ da MS. Os menores teores de fibras foram observados com níveis de CHI entre 7,01 e 7,47 g/kg MS, enquanto que os maiores teores de carboidratos não fibrosos e degradação in situ da MS foram encontrados com 6,30 e 7,17 g/kg MS de CHI, repectivamente. A CHI aumentou linearmente as concentrações de ácido acético e N-NH3, enquanto reduziu linearmente a concentração de etanol e a contagem de fungos e leveduras. Desta forma, níveis intermediários de CHI, entre 4,47 e 7,47 g / kg de MS, diminuem as perdas fermentativas e melhoram o valor nutricional da silagem de cana-de-açúcar. This study aimed to evaluate the effects of increasing levels of chitosan (CHI) on sugarcane fermentation profile and losses, chemical composition, and in situ degradation. Treatments were: 0, 1, 2, 4, and 8 g of CHI/kg of dry matter (DM). Twenty experimental silos (PVC tubing with diameter 28 cm and height 25 cm) were used. Sand (2 kg) was placed at the bottom of each silo to evaluate effluent losses, and silos were weighed 60 d after ensiling to calculate gas losses. Samples were collected from the center of the silo mass to evaluate silage chemical composition, in situ degradation, fermentation profile, and mold and yeast count. Data were analyzed as a completely randomized design, and the treatment effect was decomposed using polynomial regression. Chitosan linearly increased acetic acid and NH3-N concentration, while yeast and mold count, and ethanol concentration decreased. Intermediary levels of CHI (from 4.47 to 6.34 g/kg DM) showed the lower values of effluent, gas, and total losses. There was a quadratic effect of CHI on the content of non-fiber carbohydrates, neutral and acid detergent, and in situ DM degradation. The lowest fiber content was observed with levels between 7.01 and 7.47 g/kg DM, whereas the highest non-fiber carbohydrate content and in situ DM degradation were found with 6.30 and 7.17 g/kg DM of CHI, respectively. Chitosan linearly increased acetic acid and NH3-N concentration, whereas it linearly reduced ethanol concentration and count of yeast and mold. Thus, intermediary levels of CHI, between 4.47 and 7.47 g/kg of DM, decrease fermentation losses and improve the nutritional value of sugarcane silage.
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- 2020
14. Forage production, morphological, and chemical composition of diploid and tetraploid cultivars of Italian ryegrass in hydromorphic soils.
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Dornelles, Renata da Rosa, Comassetto, Danielli dos Santos, Faleiro, Eduardo Avelino, Pinto, Augusto Gossmann, Barreto, Mariana Trindade, Rodrigues, Carine Rey, Del Valle, Tiago Antonio, and Azevedo, Eduardo Bohrer de
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HYDROMORPHIC soils ,ITALIAN ryegrass ,CULTIVARS ,SOIL composition ,RYEGRASSES ,FORAGE plants ,PLOIDY ,INFLORESCENCES - Abstract
This study aimed to evaluate forage mass, morphological, and chemical composition of diploids and tetraploids Italian ryegrass cultivars in hydromorphic soil. Eight ryegrass cultivars were evaluated in a two-years completely randomised trial with four plots per cultivar. Forage production was recorded, and samples were collected to evaluate morphological and chemical composition. The contrasts methodology was used to verify differences between diploid and tetraploid cultivars. Compared to tetraploids, the diploids had the greatest number of cuts and the largest accumulation of forage in the second year, highlighting the better adaptation of cultivars in hydromorphic soils. Tetraploid ryegrass increased leaves and reduced stem and inflorescence proportion relative to diploid ryegrass. Tetraploid cultivars had lower DM, organic matter, and acid detergent fibre content than diploid cultivars. However, there was no significant difference between cultivars associated with their ploidy for the neutral detergent fibre and estimated total digestible nutrients. Additionally, only in the second year, tetraploid had lower crude protein content than diploid ones. Tetraploid ryegrass showed be less tolerant to periods of water stress due to flooding, characteristic of hydromorphic soils, resulting in less forage production than diploid ryegrass. [ABSTRACT FROM AUTHOR]
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- 2022
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15. Citrus pulp-based supplement reduces the detrimental effects of high grazing pressure on the performance of beef cattle under a rotational system of Urochloa brizantha
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Costa, Diogo Fleury Azevedo, Da Silva, Sila Carneiro, Bittar, Carla Maris, Takiya, CaioSeiti, Dórea, João Ricardo Reboucas, Del Valle, Tiago Antonio, Malafaia, Pedro, and Santos, Flavio Augusto Portela
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tropical pasture ,Manejo do pastejo ,grazing management ,pastagem tropical ,suplementação energética ,Energy supplementation - Abstract
SUMMARY The objectives were to evaluate the performance of bull calves under two grazing strategies and the use of energy supplementation in a rotational system of marandu palisade grass (Urochloa brizantha) and to assess the morphological and chemical composition of the grass. Eighty eight-month-old bulls of 224 ± 2.4 kg body weight (BW) were used in a completely randomized block design in a 2×2 factorial arrangement of two post-grazing heights (i.e.10 cm or 15 cm) and of a citrus pulp-based supplement (i.e. 72% total digestible nutrients) fed daily at 0 or 6 g/kg BW. Initial grazing height was set at 25 cm with variable grazing intervals and stocking rate adjustments used to control the grazing heights. Statistical analyses were performed using the SAS Mixed procedure. Significance was set at 0.05. Forage data from 12 pre-determined paddocks showed no differences in forage mass (FM) and morphological composition at pre-grazing, but greater post-grazing FM and shorter grazing interval in pastures managed at 15 cm. Higher grazing pressure resulted in lowest BW gains for non-supplemented bulls in the 10 cm treatment. The use of an energy supplement and 15 cm postgrazing height resulted in the greatest BW gains; however, combination of10 cm post-grazing height and energy supplementation allowed greater stocking rates. Under high grazing pressure, supplementary feed overcame the normal limitations, and high gains were achieved. RESUMO Os objetivos foram avaliar o desempenho de tourinhos em duas estratégias de pastejo e a suplementação energética em um sistema de lotação rotacionadade capim marandu (Urochloa brizantha) e avaliar a composição morfológica e bromatológica da gramínea. Oitenta bezerros não castrados com 8 meses de idade [224 ± 2,4 kg peso vivo (PV)] distribuídos em blocos casualizados com arranjo fatorial 2×2 entre altura de saída (i.e. 10 cm ou 15 cm) e suplemento (i.e. 72% nutrientes digestíveis totais) fornecido diariamente à0 ou 6 g/kg PV. Análises estatísticas foram feitas com o procedimento Mixed do SAS, adotando-se nível de significância à 0,05. A altura de entrada nos pastos foi de 25 cm. O intervalo entre pastejos foi variável com taxa de lotação ajustada de acordo com as premissas de pastejo. A massa de forragem (MF) pré- e pós-pastejo, taxa de crescimento da MF e o acúmulo de MF foram mensuradas em 12 piquetes pré-determinados. A MF no pré-pastejo foi semelhante, porém maior MF e menor intervalo entre pastejos foram observados nos pastos com altura de saída de 15 cm. A composição morfológica entre os dois manejos foi semelhante na entrada, porém a proporção de folhas foi maior no 15cm. A suplementação combinada a altura de saída de 15 cm gerou os maiores ganhos. Porém, a suplementação associada a altura de saída de 10 cm permitiu maior taxa de lotação, não afetando produtividade. Os efeitos deletérios da pressão de pastejo sobre o desempenho animal foram reduzidos quando a suplementação foi utilizada.
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- 2019
16. Produção, composição bromatológica e fenológica de forrageiras estivais na Região Sul do Brasil
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Rodrigues, Carine Rey, primary, Comassetto, Danielli Santos, additional, Dornelles, Renata Rosa, additional, Rosa, Fabiane Quevedo, additional, Oaigen, Ricardo Pedroso, additional, Castagnara, Deise Dalazen, additional, Del Valle, Tiago Antonio, additional, and Azevedo, Eduardo Bohrer, additional
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- 2020
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17. Effects of cutting height managements on yield and composition of different annual pastures
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COMASSETO, Danielli dos Santos, primary, RODRIGUES, Carine Rey, additional, DORNELLES, Renata da Rosa, additional, FALEIRO, Eduardo Avelino, additional, PINTO, Augusto Gossmann, additional, CASTAGNARA, Deise Dalazen, additional, OAIGEN, Ricardo Pedroso, additional, DEL VALLE, Tiago Antonio, additional, and AZEVEDO, Eduardo Bohrer de, additional
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- 2020
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18. Nutritional evaluation of millet at different seeding rates and cutting heights
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Milke, Lilian Monise, Campana, Mariana, Antônio, Giovani, Morais, Jozivaldo Prudêncio Gomes de, Zilio, Elissandra Maiara de Castro, Santos, Juliana Aparecida Alves dos, and Del Valle, Tiago Antonio
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Manejo do pasto ,Produção de forragem ,NDF ,FDN ,Digestibility ,Digestibilidade ,Lignina ,Forage production ,Grazing management ,Lignin - Abstract
Os efeitos de diferentes taxas de semeadura e altura de corte na produção e composição bromatológica do milheto foram avaliados em dois experimentos executados em delineamento em blocos casualizados. No primeiro experimento, foram utilizadas 32 parcelas (1,2 x 1,2 m) e avaliadas as taxas de semeadura de 24, 35, 50 e 60 kg/ha. Três cortes foram realizados para avaliar a altura das plantas, a produção de massa fresca e seca, os teores de matéria seca (MS), fibra em detergente neutro (FDN), proteína bruta (PB) e lignina, assim como a digestibilidade in situ da matéria seca e FDN. No segundo experimento, 20 parcelas (1,2 x 3,0 m) foram usadas para avaliar o efeito das alturas de corte de 20, 30, 40 e 50 cm, sobre as variáveis previamente citadas. De acordo com o aumento da taxa de semeadura, houve aumento linear da altura das plantas e da produção de massa seca e fresca e tendência de redução linear da digestibilidade in situ da matéria seca, sem afetar a composição da forragem. A altura de corte não afetou a concentração de proteína bruta, mas aumentou linearmente a altura das plantas, a produção de massa seca e o teor de matéria seca e tendeu a reduzir a digestibilidade in situ da FDN e a concentração de lignina. Assim, o emprego de maiores taxas de semeadura (60 kg/ha) e de altura de corte (50 cm) aumentam a produção de forragem, enquanto que menores alturas de corte aumentam a qualidade da forragem. This study evaluated the effect of different seeding rates and cutting heights on production and composition of millet. Two randomized block design experiments were performed. In the first trial, 32 parcels (1.2 × 1.2 m) were used for evaluation of seeding rate of 24, 35, 50 and 60 kg/ha. Three cuts were carried out to evaluate plant height, fresh and dry mass yield, dry matter (DM), neutral detergent fiber (NDF), crude protein (CP) and acid detergent lignin (ADL) concentration and in situ DM and NDF digestibility. In the second trial, 20 parcels (1.2 × 3.0 m) were used to evaluate 20, 30, 40 and 50 cm of cutting heights for two growing cycles, performing the evaluations previously listed. Seeding rate linearly increased plant height, fresh and dry mass production, and tended to linearly decrease dry matter in situ digestibility, without effects on forage composition. Cutting height had no effect on crude protein (CP) concentration, but linearly increased plant height, dry mass production, DM content and tended to decrease NDF in situ digestibility and ADL content. Thus, the use of the highest evaluated seeding rates (60 kg/ha) and cutting height (50 cm) increased forage production; however, the use of the lowest residual height increased forage quality.
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- 2018
19. Ensilagem de milho de diferentes genótipos produzidos com adubação orgânica
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Nascimento, Gabriela Do, primary, Zenatti, Thiago Ferreira, additional, Cantoia Júnior, Roberto, additional, Del Valle, Tiago Antonio, additional, Campana, Mariana, additional, Fontanetti, Anastácia, additional, and Morais, Jozivaldo Prudêncio Gomes de, additional
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- 2019
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20. Citrus pulp-based supplement reduces the detrimental effects of high grazing pressure on the performance of beef cattle under a rotational system of Urochloa brizantha
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Costa, Diogo Fleury Azevedo, primary, Da Silva, Sila Carneiro, additional, Bittar, Carla Maris, additional, Takiya, CaioSeiti, additional, Dórea, João Ricardo Reboucas, additional, Del Valle, Tiago Antonio, additional, Malafaia, Pedro, additional, and Santos, Flavio Augusto Portela, additional
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- 2019
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21. Efeitos de enzimas fibrolíticas sobre a degradação in situ da matéria seca e da fibra de forrageiras
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Antonio, Giovani, primary, Filla, Murilo Gaio, additional, Del Valle, Tiago Antonio, additional, Campana, Mariana, additional, and De Morais, Jozivaldo Prudêncio Gomes, additional
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- 2018
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22. Effects of chitosan on ruminal fermentation, nutrient digestibility, and milk yield and composition of dairy cows
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Gomes de Paiva, Pablo, primary, Ferreira de Jesus, Elmeson, additional, Del Valle, Tiago Antonio, additional, Ferreira de Almeida, Gustavo, additional, Costa, Artur Gabriel Brao Vilas Boas, additional, Consentini, Carlos Eduardo Cardoso, additional, Zanferari, Filipe, additional, Takiya, Caio Seiti, additional, Bueno, Ives Cláudio da Silva, additional, and Rennó, Francisco Palma, additional
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- 2017
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23. GLICERINA NA ALIMENTAÇÃO DE BOVINOS
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Paiva, Pablo Gomes de, primary, Rennó, Francisco Palma, additional, Del Valle, Tiago Antonio, additional, Jesus, Elmeson Ferreira de, additional, Santos, Fernanda Carolina Ramos, additional, Costa, Artur Gabriel Brao Vila Boas, additional, Cabral, Guilherme Fonseca, additional, and Almeida, Gustavo Ferreira de, additional
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- 2015
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24. Effect of organic sources of minerals on fat-corrected milk yield of dairy cows in confinement
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Del Valle, Tiago Antonio, primary, Jesus, Elmeson Ferreira de, additional, Paiva, Pablo Gomes de, additional, Bettero, Vitor Pereira, additional, Zanferari, Filipe, additional, Acedo, Tiago Sabella, additional, Tamassia, Luis Fernando Monteiro, additional, and Rennó, Francisco Palma, additional
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- 2015
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25. Effects of chitosan on ruminal fermentation, nutrient digestibility, and milk yield and composition of dairy cows.
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de Paiva, Pablo Gomes, de Jesus, Elmeson Ferreira, Del Valle, Tiago Antonio, de Almeida, Gustavo Ferreira, Vilas Boas Costa, Artur Gabriel Brao, Cardoso Consentini, Carlos Eduardo, Zanferari, Filipe, Takiya, Caio Seiti, da Silva Bueno, Ives Cláudio, and Rennó, Francisco Palma
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Our objective was to evaluate the effects of providing increasing levels of chitosan on nutrient digestibility, ruminal fermentation, blood parameters, nitrogen utilisation, microbial protein synthesis, and milk yield and composition of lactating dairy cows. Eight rumen-fistulated Holstein cows [average days in lactation = 215 ± 60.9; and average bodyweight (BW) = 641± 41.1 kg] were assigned into a replicated 4×4 Latin square design, with 21-day evaluation periods. Cows were assigned to be provided with four levels of chitosan, placed into the rumen through the fistula, as follows: (1) Control: with no provision of chitosan; (2) 75 mg/kg BW; (3) 150 mg/kg BW; and (4) 225 mg/kg BW. Chitosan had no effect on dry matter intake (P > 0.73); however, chitosan increased (P = 0.05) crude protein digestibility. Propionate concentration was increased (P = 0.02), and butyrate, isobutyrate, isovalerate and acetate : propionate ratio were decreased (P≤0.04) by chitosan. Chitosan had no effect (P > 0.25) on acetate, pH and NH
3 ruminal concentration. Glucose, urea, and hepatic enzyme concentrations in the blood were similar (P > 0.30) among treatments. Nitrogen balance was not affected, but chitosan increased milk nitrogen (P = 0.02). Microbial protein synthesis was not affected by chitosan (P > 0.44). Chitosan increased (P = 0.02) milk yield, fat-corrected milk, protein and lactose production. Chitosan changes ruminal fermentation and improves milk yield of lactating dairy cows; therefore, we conclude that chitosan can be used as a rumen modulator instead of ionophores in diets for dairy cows. [ABSTRACT FROM AUTHOR]- Published
- 2017
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26. Olive pomace in finishing lambs in confinement
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Teixeira, William Soares, Carvalho, Sérgio, Venturini, Rafael Sanches, Saccol, Ana Gabriela de Freitas, Del Valle, Tiago Antonio, and Pellegrini, Luiz Giovani de
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Desirable fatty acids ,Oliveiras ,By-products ,Ácidos graxos desejáveis ,Subprodutos ,CIENCIAS AGRARIAS::ZOOTECNIA [CNPQ] ,Olive trees - Abstract
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES The present experiment aimed to evaluate the influence of the inclusion of increasing levels of olive pomace (OP) in substitution of corn silage (CS) as a roughage feed in the sheep diet. Nutrient intake, performance, ingestive behavior, economic viability of finishing and the lipid profile of meat from lambs in a feedlot system were evaluated. Thirty-five male lambs, not castrated, Texel x Ile de France crosses, weaned at 50±5 days of age, kept in individual pens were used. The treatments consisted of five levels of replacement of CS by OP, being 0%, 15%, 30%, 45% and 60%, based on dry matter (DM). A roughage: concentrate ratio of 50:50, on a DM basis, was used. The concentrate consisted of ground corn, soybean meal, limestone and common salt. The consumption of DM, MO, CP, NDF, CHT and NDT decreased linearly (P≤0.05) with the increase in the use of OP. The consumption of EE and ADF presented a quadratic result (P≤0.01) with the increase of OP levels. The average daily weight gain (DWG) was influenced in a decreasing linear way by the inclusion of OP in the diet (P≤0.05). Regarding the ingestive behavior, the time spent in feeding (ALIM) was influenced in a quadratic way (P≤0.05), while the rumination (RUM) and idleness in a cubic way (P≤0.05) with the increase of BA in the diets. The increase in the level of OP in the diet linearly reduced (P≤0.05) the daily feed costs and provided a linear increase (P≤0.05) in the profit obtained per kilogram of lamb live weight gain. As for the lipid profile of the lamb meat, the increase in the replacement of CS by OP linearly reduced (P≤0.05) the levels of C16:0, while it linearly increased (P≤0.05) the concentrations of C18:0, C18:1 c11 of the longissimus dorsi muscle of lambs in feedlot. The increase in the level of OP in the diets increased the concentration of desirable fatty acids (DFA) (C18:0 + monounsaturated + polyunsaturated) in lamb meat. In a concentrated roughage ratio of 50:50, the weight gain drops linearly, however, OP can be used as roughage in place of SM up to the proportion of 60%, since the increase in the level of use of this residue reduces daily feed costs and providing an increase in the profit obtained per kilogram of lamb live weight gain and increases DFA values improving some aspects of the lipid profile of the animals. O presente experimento teve como objetivo de avaliar a influência da inclusão de níveis crescentes de bagaço de azeitona (BA) em substituição a silagem de milho (SM) como alimento volumoso na dieta de ovinos. Avaliaram-se o consumo de nutrientes, desempenho, comportamento ingestivo, viabilidade econômica da terminação e o perfil lipídico da carne de cordeiros em sistema de confinamento. Foram utilizados 35 cordeiros machos, não castrados, cruzas Texel x Ile de France, desmamados aos 50±5 dias de idade, mantidos em baias individuais. Os tratamentos foram constituídos por cinco níveis de substituição de SM por BA, sendo eles 0%, 15%, 30%, 45% e 60%, com base na matéria seca (MS). Utilizou-se uma relação volumoso: concentrado de 50:50, em base da MS. O concentrado foi constituído por milho moído, farelo de soja, calcário calcítico e sal comum. Os consumos de MS, MO, PB, FDN, CHT e NDT diminuíram linearmente (P≤0,05) com o incremento da utilização da BA. Já os consumos de EE e FDA apresentaram resultado quadrático (P≤0,01) com o incremento dos níveis de BA. O ganho de peso médio diário (GMD) foi influenciado de forma linear decrescente pela inclusão de BA na dieta (P≤0,05). Em relação ao comportamento ingestivo, o tempo despendido em alimentação (ALIM) foi influenciado de maneira quadrática (P≤0,05), enquanto o tempo de ruminação (RUM) e ócio (OCIO) de maneira cúbica (P≤0,05) com o aumento de BA nas dietas. O aumento do nível de BA na dieta reduziu linearmente (P≤0,05) os custos diários com alimentação e proporcionou um aumento linear (P≤0,05) no lucro obtido por quilograma de ganho de peso vivo de cordeiro. Quanto ao perfil lipídico da carne dos cordeiros, o aumento da substituição de SM por BA reduziu linearmente (P≤0,05) os teores de C16:0, enquanto aumentou linearmente (P≤0,05) as concentrações de C18:0, C18:1c11 do músculo longissimus dorsi de cordeiros em confinamento. O aumento do nível de BA nas dietas aumentou a concentração de ácidos graxos desejáveis (AGD) (C18:0 + monoinsaturados + poli-insaturados) na carne de cordeiros. Em uma relação volumoso concentrado de 50:50, o ganho de peso cai linearmente, entretanto, pode-se utilizar BA como alimento volumoso em substituição a SM até a proporção de 60%, uma vez que o aumento do nível de utilização desse resíduo reduz os custos diários com alimentação e proporcionando um aumento no lucro obtido por quilograma de ganho de peso vivo de cordeiro, e aumenta os valores de AGD melhorando alguns aspectos do perfil lipídico dos animais.
- Published
- 2022
27. Amylolytic enzymes of rehydrated ground corn silage storage for different periods
- Author
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Batista, Jamille Débora de Oliveira, Gandra, Jefferson Rodrigues, Goes, Rafael Henrique de Tonissi e Buschinelli de, and Del Valle, Tiago Antonio
- Subjects
Silage ,Digestibility ,CIENCIAS AGRARIAS [CNPQ] ,Amylases ,Digestibilidade ,Silagem ,Amílase - Abstract
Submitted by Alison Souza (alisonsouza@ufgd.edu.br) on 2019-05-29T16:24:19Z No. of bitstreams: 1 JamilleDeboadeOliveiraBatista.pdf: 1177297 bytes, checksum: 4836471f77002c7df2ec4f87f81fa288 (MD5) Made available in DSpace on 2019-05-29T16:24:19Z (GMT). No. of bitstreams: 1 JamilleDeboadeOliveiraBatista.pdf: 1177297 bytes, checksum: 4836471f77002c7df2ec4f87f81fa288 (MD5) Previous issue date: 2019-02-22 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Com o maior uso de ferramentas tecnológicas nos sistemas de produção animal, a silagem de milho transformou-se no alimento volumoso de maior ocorrência e utilização no Brasil. Mas, apesar das características que tornam o milho um alimento muito utilizado na nutrição animal e o principal ingrediente na confecção de silagens, a maioria dos híbridos cultivados no Brasil possui alta vitreosidade, o que limita a sua digestibilidade. Por esse motivo, a adição de compostos enzimáticos na dieta animal tem sido utilizada mais frequentemente. Assim, objetivo deste experimento foi avaliar os efeitos de enzimas amilolíticas e do tempo de armazenamento sobre as perdas fermentativas, estabilidade aeróbica, composição químico-bromatológico, perfil fermentativo e microbiológico e atividade enzimática da silagem de milho reidratado. Foram utilizados 120 silos experimentais, divididos em 3 tratamentos: 1- COM (sem adição de enzima amilolítica); 2- α-AMI (amilase, Kerazyme 3035, atividade enzimática 300 U mL-1); 3- GLU (glucoamilase, Kerazyme 4560, atividade enzimática 300 U mL-1). Todos os silos foram inoculados com L. plantarum (4,0 × 1010 UFC g-1) e P. acidipropionici (2,6 × 1010 UFC g-1) adicionado a 4 g t-1. Os silos foram abertos a cada 30 dias durante 240 dias de armazenamento. Os dados foram submetidos a análise de variância utilizando-se o PROC MIXED do SAS 9.3. Longos períodos de armazenamento e a adição de amilases influenciaram negativamente as perdas fermentativas, a estabilidade aeróbica, reduziu os teores de MS, amido, CNF, DIVMS e aumentaram as concentrações de PB, EE, lignina e EB. Houve redução do pH, acetado e butirato e aumento na concentração do etanol e lactato comparando os silos acrescidos de enzimas ao controle. A inclusão de enzimas não aumentou a população de bactérias ácido láticas e não estabilizou a população de fungos e leveduras ao longo do tempo. Dessa forma, ao longo do tempo as modificações ocasionadas pela inclusão das enzimas alteraram mais de forma negativa os aspectos avaliados do alimento, por isso mais estudos são necessários para entender o funcionamento desses compostos dentro do silo e assim poder definir modelos que tonem seu uso mais efetivo. With the greater use of technological tools in animal production systems, corn silage has become the most prevalent and most prevalent food in Brazil. However, despite the characteristics that make maize a food used in animal nutrition and the main ingredient used in the manufacture of silage, most of the hybrids grown in Brazil have high vitreous, which limits their digestibility. For this reason, the addition of enzyme compounds to the animal diet has been used more frequently. This study aimed to evaluate amylolytic enzyme and storage time effects on fermentative losses, aerobic stability, nutritional value, fermentative and microbiological profile and enzymatic activity in rehydrated ground corn silage. One hundred and twenty experimental silos were prepared, divided in three treatments: 1CON (without enzyme); 2- α-AMI, (α-amylase, Kerazyme 3035, 300 mL t-1 of fresh matter); 3 - GLU, (glucoamylase, Kerazyme 4560, 300 mL t-1 of fresh matter). All silos were also inoculated with L. plantarum (4.0×1010 ufc g-1) and P. acidipropionici (2.6 ×1010 ufc g-1) added at 4 g t-1 of hydrated ground corn. The silos were opened every 30 days during the period of 240 days of storage. Data were submitted to analysis of variance using the PROC MIXED of SAS 9.3. Long periods of storage and addition of amylases negatively influenced fermentation losses, aerobic stability, reduced DM, starch, CNF, IVDMD and increased CP, EE, EB and lignin. There was a reduction of pH, acetate and butyrate and increase in ethanol and lactate concentration comparing the silos plus enzymes to the control. The inclusion of enzymes did not increase the population of lactic acid bacteria and did not stabilize the population of fungi and yeasts over time. Thus, over time the modifications caused by the inclusion of the enzymes have altered more negatively the evaluated aspects of the food, therefore more studies are necessary to understand the functioning of these compounds inside the silo and thus to be able to define models that take more use effective.
- Published
- 2019
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