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This article presents abstracts of various papers related to animal physiology and endocrinology, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Prediction of Reproductive Performance on Large Commercial Dairies," by D. Caraviello and others. Data from Holstein cows in large commercial herds that participated in the Alta Genetics' Advantage progeny testing program were analyzed to explain factors affecting conception at first, second, and third services, pregnancy status at 150 days in milk, and days open. Another paper discussed is "Fatty Acid Composition of the Porcine Conceptus in Response to Maternal Omega-3 Fatty Acid Supplementation," by A. E. Brazle and others. Maternal omega-3 fatty acid supplementation is reported to increase litter size in pigs. Therefore we evaluated the hypothesis that omega-3 sources would affect the fatty acid composition of pig concept uses and that the effects would differ with the omega-3 source.

This article presents abstracts of various papers related to animal health, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Lactate Dehydrogenase and N-acetyl-b-D-Glucosaminidase Activities in Bovine Milk As Measures of Clinical Mastitis," by M.G.G. Chagunda, T. Larsen, M. Bjerring and K.L. Ingvartsen. The activities of lactate dehydrogenase and N-acetyl-b-D- glucosaminidase and their relationship to somatic cell count was investigated in normal and mastitic bovine milk. A full dataset, consisting of records from Danish Holstein, Danish Red and Jersey cows on one research farm were utilized in the study. Another paper discussed is "Association Between Local Clinical Signs and Important Outcomes of Clinical Mastitis Episodes in Dairy Cattle," by J. Wenz, R. Ella, K. Whitman and F. Garry. Clinical mastitis is the most common infectious disease of dairy cattle and is responsible for significant economic losses. There are many local clinical signs associated with inflammatory changes of the mammary gland during bacterial infection.

This article presents abstracts of various papers related to ruminant nutrition, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Effects of Omnigen-AF on Milk Production and on Lactation Persistence in a Commercial Dairy Setting," by J. Chapman, S. Pintenney, J. Verano and others. The goal of this study was to evaluate effects of feeding OmniGen-AF, a commercially available feed additive, on milk production and persistence of milk yield during a 60-day field trial. Effects of the two treatments on milk production were assessed statistically with a model which included pre-experiment milk production, days in milk, and lactation number as co-variates. Another paper discussed is "Effect of Increasing Oil From Distillers Grains or Corn Oil on Lactation Performance," by C. Leonardi, S. Bertics and L. Armentano. The objective of this study was to evaluate lactation production response of dairy cows fed distillers dried grains with added solubles.

This article presents abstracts of various papers related to the nutrition management in animals, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Electronic Identification of Young Lambs With Mini-Bolus and Effects on Intake and Digestibility During Fattening," by J. Ghiradi, G. Caja, C. Flores and D. Garin. Lambs sucked from their mothers until wk 5 or wk 6, and were intensively fattened thereafter. Growth rate, bolus retention and health status were recorded weekly. Retrieval and fore-stomachs location of cylindrical ceramic mini-boluses at slaughter were also recorded. Another paper discussed is "Multivariate Factor Analysis of Electrical Conductivity in Dairy Cattle," by N.P.P. Macciotta, M. Mele, R. Steri and P. Secchiari. Electrical conductivity of milk is an indicator trait for mastitis and it may be considered as a potential breeding goal for genetic programs, even if an accurate detection of affected animals still represents a problem.

This article presents abstracts of various papers related to dairy foods' chemistry and products, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Rapid Determination of Swiss Cheese Composition by Infrared Spectroscopy," by N. Koca, W.J. Harper, L. Rodriguez-Saona and V.B. Alvarez. The objective of this research was to develop a simple and rapid screening tool for monitoring Swiss cheese composition by using FT-IR spectroscopy. Swiss cheese samples from eight different manufacturers were evaluated. Direct measurements of Swiss cheese slices were made by using a MIRacle three reflection diamond attenuated total reflectance accessory. Another paper discussed is "The Effect of Calcium Removal From Milk on Casein Micelle Stability and Structure," by H. Grimley, A. Grandison and M. Lewis. In this study calcium was removed from raw skimmed milk at levels of 10, 19, 29,40 and 51% of total calcium using an ion exchange resin.

This article presents abstracts of various papers related to the breeding and genetics of animals, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Fine Mapping of a Bovine Twinning Rate QTL," by E.S. Kim. A twinning rate quantitative trait locus (QTL) has been previously detected on chromosome 5 in the North American Holstein dairy cattle population. The objective of the current study was to refine the map location of this QTL. In the previous work the strongest evidence for this QTL was obtained from analysis of an extended, four-generation sire family. Another paper discussed is "X- and Y-Cromosomes Bearing Sperm Ratio in Individual Bull Ejaculation," by J. Schenk, M. Meyers and E. Crichton. Small sample sizes often lead to erroneous conclusions about true sex ratios due to binomial statistical variation. DNA resort reanalysis, PCR and fluorescence in situ hybridization can be used to accurately determine sex ratios in a sample of semen.

This article presents abstracts of various papers related to animal physiology and endocrinology, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Measuring Aseasonality in a Crossbred Pedigree Developed for Mapping QTL," by R.G. Mateescu, M.L. Thonney and others. An experimental crossbred pedigree was created to identify QTL contributing to aseasonality by crossing Dorset ewes with East Friesian rams and breeding F1 rams to Dorset ewes. Aseasonality in 117 yearling backcross ewes was assessed using a blood progesterone profile prior to, during and after the spring 2003 breeding season. Another paper discussed is "Effect of Maternal Undernutrition on Capillary Vascularity of the Bovine Placentome," by K. Vonnahme, L. Reynolds and others. Improper maternal nutrition during pregnancy in ewes greatly impacts the capillary vascularity of placentomes. In the beef cow, the effect of early maternal undernutrition followed by realimentation on placentomal capillary vascular density was determined.

This article presents abstracts of various papers related to nonruminant nutrition, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Evaluation of Gender and Lysine During the Nursery Period," by G.M. Hill, S.K. Baidoo and others. Split-gender feeding in the grow-finish period was an innovative technology of the last decade. However, due to various weaning strategies, it has not been adequately evaluated in the nursery. The results demonstrate that increasing lysine concentrations in nursery diets results in improved pig performance of both genders, and there appears to be no benefit in split-gender feeding during the nursery phase. Another paper discussed is "Effect of Replacing Fish Meal With Synthetic Amino Acids in Diets for 8 to 15 kg Pigs," by B.W. Ratliff, A.M. Gaines and others. At a commercial research site with pigs of high health status, three independent experiments were conducted to evaluate the effect of replacing fish meal with synthetic amino acids in diets for 8 to 15 kg pigs.

This article presents abstracts of various papers related to animal science, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Diurnal Variation of Blood Metabolites in Response to Time of Feeding and Dietary Forage to Concentrate Ratio in Lactating Dairy Cows," by A. Nikkhah, J.C. Plaizier, C. Furedi and A.D. Kennedy. The effects of the time of providing fresh total mixed ration and the dietary concentrate level on daily averages and diurnal variation of blood metabolites were examined. Diurnal rhythmicity of blood urea was significantly entrained by the interaction between diet and times of feeding. Another paper discussed is "Early weaning up-regulates the capacity of the small intestinal sucrase-isomaltase and maltase-glucoamylase hydrolysis of maltose in the neonatal pig," by D. Lackeyram, D. Pham and others. Sucrase-isomaltase and maltase-glucoamylase are small intestinal brush border membrane enzyme complexes responsible for the hydrolysis of maltose.

This article presents abstracts of various papers related to animal science, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers discussed is "Validation of a New Equation Predicting Digestible Energy of Forage for Sheep," by M. Vachon, J.F. Bernier and others. The aim of this project was to compare the precision of a new multi-component empirical model to predict digestible energy of forages fed to sheep, with the equation actually used in Quebec for grasses. Comparisons were made in two separate trials with 48 lactating and 46 pregnant ewes in a 2x2 factorial arrangement. Another paper presented is "True Phosphorus Digestibility and the Endogenous Phosphorus Losses Associated With Barley for Pigs," by A.M. Hawkins, C.M. Nyachoti and others. The nutritional evaluation of field peas for swine has primarily focused on its energy and protein value. However, the bio-availability of phosphorus in peas for pigs has only been examined to a limited extent.

This article presents abstracts of various papers related to teaching animal science, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Promotion and Tenure on the Basis of Excellence in Teaching: An Institutional Perspective," by L. Connor and J. Armstrong. Excellence in teaching must be achieved in the prevailing institutional culture. Both faculty and administration must be involved in this quest. Teaching must be placed on the same plane as research extension with no preferential treatment. Another paper discussed is "Promotion and Tenure on the Basis of Excellence in Teaching: A Faculty Perspective," by M. Wattiaux and J. Moore. With a renewed emphasis on their educational role as institutions of learning and teaching, many universities are revising guidelines for tenure and promotion of assistant professors with major teaching appointments.

This article presents abstracts of various papers related to cattle growth and development, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Hormone and Growth Factor Regulation of Tissue Remodeling in the Mammary Gland," by D. Flint, G. Allan, J. Beattie and others. Insulin-like growth factor binding protein-5 (IGFBP-5) production increases dramatically during forced involution of the mammary gland in rats, mice and pigs. Growth hormone increases production of the survival factor IGF-I, whilst prolactin enhances the effects of GH by inhibiting IGFBP-5 synthesis which would otherwise prevent the actions of IGFs. Another paper is "Effects of Modified Calf Growth on Mammary Development, Endocrine Physiology, and Performance," by M. Vestergaard, S. Purup and others. The purpose of rearing heifers comprises a utilization of the genetic potential of the animal to achieve the most favorable body and mammary gland development by optimizing feeding and rearing conditions.

This article presents abstracts of various papers related to teaching animal science to undergraduates and graduates, that were presented during the symposium held on July 26, 2005, Cincinnati, Ohio, which was organized by the American Dairy Science Association, the American Society of Animal Science and the Canadian Society of Animal Science. One of the papers presented is "Determining Graduation Rate of Students Who Initially Enrolled As Animal Science Majors at the University of Missouri During a Consecutive Four-Year Period," by G. Jesse and M. Ellersieck. Data obtained primarily from the University of Missouri's Student Information System were used to determine graduation rate of students who initially enrolled as animal science majors as freshmen or transfer students during the fall semester of 1996, 1997, 1998 or 1999. Another paper discussed is "Perceptions of High School Students Towards Advanced Life Science: Animals, Academic Honors Curricula," by A. Huerta, B. Hains and M. Balschweid. The objective of this study was to evaluate high school students' perceptions, opinions, and perceived benefits gained towards a new academically rigorous animal science curriculum.