Lopez, D. A., L. V. Lagos, and H. H. Stein. 2019. Digestible and metabolizable energy by pigs in soybean meal sourced from different countries. Book of Abstracts. In: 1^st International Feed Technology Congress, Cologne, Germany. p. 26. (Abstr.). Link to Abstract.

Lee, S. A., and H. H. Stein. 2019. Effects of graded levels of phytase on digestibility of nutrients, growth performance, and bone ash in corn and soybean meal based diets fed to pigs. In: 80^th Minnesota Nutrition Conference, Mankato, MN, Sep. 18-19, 2019. P. 25. (Abstr.). Link to abstract

Distillers dried grains with solubles (DDGS) is a co-product from the dry-grind ethanol production. However, quality and nutrient content of DDGS may differ among sources and origins and new technologies allow for production of DDGS with different chemical compositions as well as nutritional values. Recently a high-protein distillers dried grains (HP-DDG; ProCap DDGS, Marquis Energy, Hennepin, IL) was introduced and the HP-DDG has greater concentrations of CP and fat, but contains less fiber compared with conventional DDGS, which may affect the digestibility of AA in HP-DDG compared with conventional DDGS. There are, however, no data for the digestibility of AA in this new source of DDGS. Therefore, the objective of this research was to test the hypothesis that standardized ileal digestibility (SID) of AA in HP-DDG is greater than in conventional DDGS when fed to growing pigs.

Kwon W. B., and H. H. Stein. 2019. Update on amino acids in high fiber diets: Threonine and branch chained amino acids. Midwest Swine Nutr. Conf. Indianapolis, IN, Sep. 4, 2019, p. 11-17. Link to full text

Rodriguez, D. A., S. A. Lee, C. Jones, J. K. Htoo, and H. H. Stein. 2019. Effects of extrusion on nutrient and energy digestibility in cereal grains fed to growing pigs. In: 6th EAAP International Symposium on Energy and Protein Metabolism and Nutrition, Belo Horizonte, Minas Gerais, Brazil, Sep. 9-12, 2019. Pages 185-186. (Abstr.). Link to full text

Muñoz, C. J., T. L. Funk, and H. H. Stein. 2019. Features of a new calorimetry unit to measure heat production and net energy by group-housed pigs. In: 6th EAAP International Symposium on Energy and Protein Metabolism and Nutrition, Belo Horizonte, Minas Gerais, Brazil, Sep. 9-12, 2019. Pages 413-414. (Abstr.). Link to full text

Kwon, W. B., K. J. Touchette, A. Simongiovanni, K. Syriopoulos, A. Wessels, and H. H. Stein. 2019. Effects of dietary leucine and tryptophan supplementations on serotonin metabolism and growth performance of growing pigs. In: 6th EAAP International Symposium on Energy and Protein Metabolism and Nutrition, Belo Horizonte, Minas Gerais, Brazil, Sep. 9-12, 2019. Pages 303-304.

Supplementing Cu to diets fed to pigs at 100 to 250 mg/kg may reduce post-weaning scouring and also improve ADG and ADFI. Addition of Cu at 250 mg/kg in diets for pigs containing 5% animal fat improved growth performance, and it was speculated that this is due to the ability of Cu to improve animal fat utilization and enzymatic activity. Inclusion of 45 mg/kg of dietary Cu in diets for rabbits improved body mass gain by upregulating mRNA transcription of fatty acid transport protein, fatty acid binding protein, and carnitine palmitoyl transferase 1, indicating that dietary Cu may influence post-absorptive metabolism of lipids. However, the effect of supplementing dietary Cu on post-absorptive lipid metabolism in pigs remains inconclusive. Therefore, an experiment was conducted to test the hypothesis that addition of 150 mg/kg Cu from Cu hydroxychloride (IntelliBond C^II; Micronutrients USA LLC; Indianapolis, IN) to a diet based on corn, soybean meal (SBM), and distillers dried grains with solubles (DDGS) improves growth performance of pigs, and that dietary Cu influences mRNA abundance of genes involved in post-absorptive metabolism of lipids in pigs.

Lee Su A., Carrie L. Walk, Hans H. Stein. 2019. PSIV-13 Basal endogenous loss, standardized total tract digestibility, and retention of Ca in sows change throughout gestation, but microbial phytase reduces basal endogenous loss of Ca by gestating sows. Journal of Animal Science, Volume 97, Issue Supplement_2, July 2019, Pages 185–186. (Abstr.). Link to abstract.