Amino acid digestibility

Effect of dietary carbadox on apparent ileal digestibility of amino acids in weanling pigs

Stewart, L. L., B. G. Kim, B.R. Gramm, R.D. Nimmo, and H.H. Stein. 2010. Effect of dietary carbadox on apparent ileal digestibility of amino acids in weanling pigs. Am. J. Anim. Vet. Sci. 5:168-174. Link to full text (.pdf)

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Ileal digestibility of amino acids in conventional, fermented, and enzyme-treated soybean meal and in soy protein isolate, fish meal, and casein fed to weanling pigs

Cervantes-Pahm, S. F., and H. H. Stein. 2010. Ileal digestibility of amino acids in conventional, fermented, and enzyme treated soybean meal and in soy protein isolate, fishmeal, and casein fed to weanling pigs. J. Anim. Sci.  88:2674-2683. Link to full text (.pdf)

Digestibility of amino acids in novel soybean products

Raw soybeans contain antinutritional factors such as trypsin inhibitors (TI) and lectins.  The production of soybean meal involves a heating step, which reduces these anti-nutritional factors. However, conventional soybean meal contains compounds which can cause digestive disturbances in weanling pigs. Soybean meal is therefore limited in pig starter diets. Other protein sources, such as fish meal, casein, and soy protein isolate, are used for young pigs.

Two new soybean products were recently introduced to the U.S. feed market.  Fermented soybean meal (FSBM) and enzyme-treated soybean meal (ESBM) are believed to have a lower concentration of antinutritional factors and a higher concentration of crude protein and amino acids than conventional soybean meal.  They are also believed to be better tolerated by young pigs. However, not much is known about the digestibility of the protein in these two products.

This experiment was conducted to compare the digestibility of amino acids in weanling pigs of FSBM, ESBM, conventional de-hulled soybean meal, fish meal, casein, and soy protein isolate.

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Effects of distillers dried grains with solubles on amino acid, energy, and fiber digestibility and on hindgut fermentation of dietary fiber in a corn-soybean meal diet fed to growing pigs

Urriola, P. E., and H. H. Stein. 2010. Effects of distillers dried grains with solubles on amino acid, energy, and fiber digestibility and on hindgut fermentation of dietary fiber in a corn-soybean meal diet fed to growing pigs. J. Anim. Sci. 88:1454-1462. Link to full text (.pdf)

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A novel source of high-protein distillers dried grains

Buhler, Inc. of Minneapolis, Minnesota has developed a new fractionation process to more efficiently produce ethanol from corn. In this process, the germ is removed from the corn grain and the degermed grain is passed through roller mills and aspirators to remove the bran. The endosperm is fermented to produce ethanol, and the rest of the grain is left as a co-product, referred to here as HP-DDGBuhler.

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Amino acid digestibility and energy concentration in a novel source of high-protein distillers dried grains and their effects on growth performance of pigs

Kim, B. G., G. I. Petersen, R. B. Hinson, G. L. Allee, and H. H. Stein. 2009. Amino acid digestibility and energy concentration in a novel source of high-protein distillers dried grains and their effects on growth performance of pigs. J. Anim. Sci. 87:4013-4021. Link to full text (.pdf)

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Intestinal digestibility of amino acids in rumen undegraded protein estimated using a precision-fed rooster bioassay: I. Soybean meal and SoyPlus

Boucher, S. E., S. Calsamiglia, C. M. Parsons, H. H. Stein, M. D. Stern, P. S. Erickson, P. L. Utterback, and C. G. Schwab. 2009. Intestinal digestibility of amino acids in rumen undegraded protein estimated using a precision-fed rooster bioassay: I. Soybean meal and SoyPlus. J. Dairy Sci. 92:4489-4498. Link to full text (.pdf)

Digestibility of amino acids in corn and corn co-products fed to growing pigs

The objective of this experiment was to measure the standardized ileal digestibility of crude protein and amino acids in hominy feed, corn gluten meal, corn gluten feed, and corn germ meal and to compare these values to the digestibility of crude protein and amino acids amino acids in corn and distillers dried grains with solubles (DDGS). Results showed that the digestibility of most amino acids were greater (P < 0.05) in hominy feed and in corn gluten meal than in the other ingredients, whereas the digestibility of most amino acids in corn gluten feed was lower (P < 0.05) than in the other ingredients.

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Amino acid digestibility in liquid and fermented liquid feed

Pedersen, C., and H. H. Stein. 2009. Amino acid digestibility in liquid and fermented liquid feed. Digestive Physiology in Pigs (Abstr.) Link to abstract (.pdf)

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Effect of carbadox on apparent ileal digestibility of amino acids by nursery pigs

Stewart, L. L., B. G. Kim, B. R. Gramm, R. D. Nimmo, and H. H. Stein. 2009. Effect of carbadox on apparent ileal digestibility of amino acids by nursery pigs. J. Anim. Sci. 87 (E-Suppl. 3):107 (Abstr.) Link to abstract (.pdf)

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Amino acid digestibility and energy concentration in full fat soybeans from conventional, high protein, or low oligosaccharide varieties and in soybean meal fed to weanling pigs

Baker, K. M., and H. H. Stein. 2009. Amino acid digestibility and energy concentration in full fat soybeans from conventional, high protein, or low oligosaccharide varieties and in soybean meal fed to weanling pigs. J. Anim. Sci. 87 (E-Suppl. 3):94 (Abstr.) Link to abstract (.pdf)

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Amino acid digestibility of corn distillers solubles-related co-products in growing pigs

Soares, J. A., H. H. Stein, G. C. Shurson, and J. E. Pettigrew. 2009. Amino acid digestibility of corn distillers solubles-related co-products in growing pigs. J. Anim. Sci. 87 (E-Suppl. 3):67 (Abstr.) Link to abstract (.pdf)

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Amino acid digestibility and energy concentration in soybean meal produced from high protein, high digestible, or conventional varieties of soybeans and fed to weanling pigs

Baker, K. M. and H. H. Stein.  2009. Amino acid digestibility and energy concentration in soybean meal produced from high protein, high digestible, or conventional varieties of soybeans and fed to weanling pigs. J. Anim. Sci. 87 (E-Suppl. 2):331 (Abstr.) Link to abstract (.pdf)

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Ileal digestibility of amino acids in low-Kunitz soybeans fed to weanling pigs

Goebel, K. P. and H. H. Stein.  2009. Ileal digestibility of amino acids in low-Kunitz soybeans fed to weanling pigs. J. Anim. Sci. 87 (E-Suppl. 2):331 (Abstr.) Link to abstract (.pdf)

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Prediction of in vivo amino acid digestibility of dried distillers grains with solubles (DDGS) from selected physical and chemical characteristics

Urriola, P. E., D. Hoehler, C. Pedersen, H. H. Stein, L. J. Johnston, and G. C. Shurson. 2007. Prediction of in vivo amino acid digestibility of dried distillers grains with solubles (DDGS) from selected physical and chemical characteristics. J. Anim. Sci. 85(Suppl. 2):114 (Abstr.) Link to abstract (.pdf)

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Prediction of in vivo amino acid digestibility in dried distillers grains with solubles (DDGS) from crude protein, optical density and fluorescence

Urriola, P. E., D. Hoehler, C. Pedersen, H. H. Stein, L. J. Johnston, G. C. Shurson. 2007. Prediction of in vivo amino acid digestibility in dried distillers grains with solubles (DDGS) from crude protein, optical density and fluorescence. J. Anim. Sci. 85(Suppl. 2):72 (Abstr.) Link to abstract (.pdf)

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Determination of amino acid digestibility of corn, sorghum,and a corn-sorghum blend of dried distillers grains with solubles in growing pigs

Urriola, P. E., D. Hoehler, C. Pedersen, H. H. Stein, L. J. Johnston, G. C. Shurson. 2007. Determination of amino acid digestibility of corn, sorghum, and a corn-sorghum blend of dried distillers grains with solubles in growing pigs. J. Anim. Sci. 85(Suppl. 2):113 (Abstr.) Link to abstract (.pdf)

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Prediction of amino acid digestibility in distillers dried grains with solubles, by color, acid insoluble crude protein, soluble protein, and fluorescence

Urriola, P. E., H. H. Stein, D. Hoehler, C. Pedersen, G. C. Shurson. 2006. Prediction of amino acid digestibility in distillers dried grains with solubles, by color, acid insoluble crude protein, soluble protein, and fluorescence. 2006 Minnesota Nutrition Conference (Abstr.) Link to abstract (.pdf)

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Amino acid and energy digestibility in NutriDense corn and other cereal grains fed to growing pigs

Pedersen, C., M. G. Boersma and H. H. Stein. 2006. Amino acid and energy digestibility in NutriDense corn and other cereal grains fed to growing pigs. J. Anim. Sci. 84(Suppl. 1):286 (Abstr.) Link to abstract (.pdf)

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