Nonruminant Nutrition: Minerals.

The article presents abstracts of various papers related to animal nutrition that were presented during the symposium held on July 27, 2005 in 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 "Genetic Background and Phosphorus Nutrition Affect Bone Strength and Gene Expression in Young Pigs," by L. Hittmeier, R. Lensing, L. Grapes, M. Rothschild, and C. Stahl. Phosphorus (P) is essential to bone growth and turnover; however, little research has focused on the genetic mechanisms controlling P utilization. In this study, 36 guts from six litters were sired by two lines known differ in bone structure. Pigs were assigned to three dietary treatments: P adequate, repletion, or P deficient. Another paper discussed is "Dietary Selenium Sources in Swine: Maternal Transfer to Embryos," by M.E. Fortier, H. Quesnel, J.F. Bilodeau and others. This project aimed to determine the effect of selenium(Se) as inorganic Na-selenite or organic Se-yeast on maternal Se transfer to embryos, embryonic antioxidant status and litter performance.