Protein

Effects of increasing dietary protein on standardized ileal digestibility of amino acids in soybean meal and soy protein concentrate fed to growing pigs

Apparent ileal digestibility (AID) of crude protein (CP) and amino acids (AA) is affected by CP and AA concentrations in diets because of the different contributions of endogenous N and AA to the ileal digesta from pigs fed diets with different concentrations of CP. Because of the influence of dietary CP and AA on calculated values for AID, values for AID obtained in individual feed ingredients are not always additive in mixed diets if the concentration of CP and AA in the mixed diet is different from that of the ingredients. Therefore, values for standardized ileal digestibility (SID) of CP and AA, which are corrected for the basal ileal endogenous losses of CP and AA, are used in diet formulations to avoid the influence of endogenous AA on digestibility values, and SID values are, therefore, additive in mixed diets.

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A Salute to PVT TIM HiLL: Indispensable Amino Acids and Global Human Health

Berg, Eric P., and Hans H. Stein. 2021. A Salute to PVT TIM HiLL: Indispensable Amino Acids and Global Human Health. Meat and Muscle Biology 2021.5(3): 4, 1–10. doi:10.22175/mmb.12925. Link to full text.

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Effects of dietary crude protein level on growth performance, fecal score, gastrointestinal pH, and blood characteristics in weanling pigs fed antibiotic-free diets

Limbach, Joseph R., Estefania Pérez Calvo, Hans H. Stein. 2020. Effects of dietary crude protein level on growth performance, fecal score, gastrointestinal pH, and blood characteristics in weanling pigs fed antibiotic-free diets. J. Anim. Sci. 98(Suppl. 3): 91. doi.org/10.1093/jas/skaa054.159 (Abstr.). Link to abstract.

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Transitioning from the Protein Digestibility Corrected Amino Acid Score (PDCAAS) to the Digestible Indispensable Amino Acid Score (DIAAS) to evaluate protein quality of human foods.

Bailey, H. M., and H. H. Stein. 2019. Transitioning from the Protein Digestibility Corrected Amino Acid Score (PDCAAS) to the Digestible Indispensable Amino Acid Score (DIAAS) to evaluate protein quality of human foods. Inform Magazine, 30:22-24. June, 2019. Doi., 10.21748/inform.06.2019.22. Link to full text.

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Protein and amino acid digestibility of Camelina sativa co-products for growing pigs

Cerisuelo, A., P. Ferrer, E. Gómez, H. Stein, T. Woyengo, J. Cano, and O. Piquer. 2018. Protein and amino acid digestibility of Camelina sativa co-products for growing pigs. 14th International Symposium on Digestive Physiology of Pigs. Adv. Anim. Biosci. Volume 9, Issue S2, 9:S148-149. (Abstr.). Link to abstract

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Site of digestibility of protein and phosphorus by growing pigs fed diets without or with microbial phytase

Geraets, L. L., M. G. Boersma, and H. H. Stein. 2005. Site of digestibility of protein and phosphorus by growing pigs fed diets without or with microbial phytase. J. Anim. Sci. 83(Suppl. 1): 389 (Abstr.) Link to abstract (.pdf)

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Apparent and standardized ileal crude protein and amino acid digestibility coefficients in four sources of dried distillers grain by growing pigs

Stein. H. H.  2004. Apparent and standardized ileal crude protein and amino acid digestibility coefficients in four sources of dried distillers grain by growing pigs. Ajinomoto-Novus Swine Summit, 2004 (Abstr.) Link to abstract (.pdf)

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Endogenous secretions of proteins and amino acids in pregnant and lactating sows

Stein, H. H. and R. A. Easter, 1997. Endogenous secretions of proteins and amino acids in pregnant and lactating sows. In: J. P. LaPlace, C. Fevrier, and A. Barbeau (ED). Digestive physiology in pigs. EAAP publ. No 88. p. 321-324. St. Malo, France.  Link to full text (.pdf)

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Recommendations on feeding DDGS to swine

Stein, H. H. 2007. Recommendations on feeding DDGS to swine. North Carolina Cooperative Extension Service. Swine News, Vol. 30(1):1-4. Link to full text (.pdf)

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Measured digestibility values for DDGS aid diet formulation

Stein, H. H., C. Pedersen, and M.G. Boersma. 2005. Measured Digestibility values for DDGS aid diet formulation. National Hog Farmer, Dec. 15, 2005, p. 32. Link to full text (.pdf)

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Comparative protein and amino acid digestibilities in growing pigs and sows

Stein, H. H., S. Aref, and R. A. Easter. 1999. Comparative protein and amino acid digestibilities in growing pigs and sows. J. Anim. Sci. 77:1169-1179. Link to full text (.pdf)

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