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- Welsh, C.S.; Stewart, T.S.; Schwab, C.; Blackburn, H.D.
- Journal of animal science 2010 v.88 no.5 pp. 1610
- swine; food animals; swine breeds; pedigree; genetic variation; germplasm conservation; livestock; inbreeding; purebreds; animal breeders; inbreeding coefficient; breed differences; sires; population genetics; United States
- ... Globally, genetic diversity of livestock populations is contracting. Knowing the true extent of the contraction is needed to develop effective conservation strategies. Although contractions of genetic diversity have been documented at the breed level, little within breed documentation has occurred. This situation is no different for US swine breeds. Therefore, the objective of this study was to es ...
- Leytem, A.B.; Thacker, P.A.
- Journal of animal science 2010 v.88 no.5 pp. 1860
- swine; food animals; swine feeding; feces; urine; feed rations; phosphorus; dietary minerals; nutrient balance; phytases; nutrient availability; solubility; phytic acid; wheat; corn; barley; oats; digestibility; neutral detergent fiber; dietary fiber; hindgut
- ... Intrinsic phytase in swine feeds may increase phytate utilization and alter the solubility of the excreted P. The objective of this experiment was to quantify changes in fecal P composition from swine fed a variety of cereal grains containing a range of phytate concentrations and endogenous phytase activities. Twenty-five crossbred barrows (89.3 ± 6.8 kg) were fed 1 of 5 dietary treatments that we ...