Ileal digestibility

Influence of particle size and origin of field peas on apparent ileal digestibility of starch and amino acids and standardized ileal digestibility of amino acids when fed to growing pigs

Ibagon, Jimena A., Su A. Lee, C. Martin Nyachoti, and Hans H. Stein. 2024. Influence of particle size and origin of field peas on apparent ileal digestibility of starch and amino acids and standardized ileal digestibility of amino acids when fed to growing pigs. Translational Animal Science, 2024, 8, txae008. doi.org/10.1093/tas/txae008.

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Effects of Different Sources and Particle Sizes of Field Peas on Ileal Digestibility of Amino Acids and Starch by Growing Pigs

Ibagon, Jimena A., Su A Lee, Charles Martin Nyachoti, Hans H. Stein. 2023. Effects of Different Sources and Particle Sizes of Field Peas on Ileal Digestibility of Amino Acids and Starch by Growing Pigs. J. Anim. Sci., Volume 101, Issue Supplement 2, November 2023, Pages 187–188, doi.org/10.1093/jas/skad341.206. Link to abstract.

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Apparent ileal digestibility of amino acids is not likely affected by increasing calcium from deficient to over sufficient concentration in diets fed to pigs

There are several factors related to dietary Ca that may influence digestibility of amino acids (AA). By chelating to dietary phytate, dietary Ca can form non-digestible Ca-phytate complexes, and this may result in reductions of P and AA digestibility. However, adding Ca to diets may increase activation of proteases as co-factors, which could result in increased AA digestibility. In contrast, pH in the digesta may be increased by adding Ca to diets, which likely will have a negative effect on activation of protein digesting enzymes. However, to our knowledge, no data demonstrating effects of increasing dietary Ca on digestibility of AA in pigs have been reported. Therefore, the objective of this experiment was to test the hypothesis that the concentration of Ca in diets affects apparent ileal digestibility (AID) of AA by pigs.

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Ileal digestibility and endogenous protein losses of milk replacers based on whey proteins alone or with an enzyme-treated soybean meal in young dairy calves

Ansia, I., H. H. Stein, D. A. Vermeire, C. Brøkner, and J. K. Drackley. 2020. Ileal digestibility and endogenous protein losses of milk replacers based on whey proteins alone or with an enzyme-treated soybean meal in young dairy calves. J. Dairy Sci. 103: 4390–4407.

Ileal digestibility of an enzyme-treated soybean meal for milk replacer in pre-weaned dairy calves

Ansia, I., H.H. Stein, C. Brøkner, D.A. Vermeire, and J.K. Drackley. 2019. Ileal digestibility of an enzyme-treated soybean meal for milk replacer in pre-weaned dairy calves. Abstract 14 in 37th ADSA Discover Conference Program: Natural Bioactives in Dairy Production: Science, Functions and the Future, Itasca, IL. (Abstr.). Link to full text.

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Effects of two direct fed microbials on ileal digestibility of amino acids and total tract digestibility of crude protein and gross energy in diets fed to growing pigs

Direct fed microbials (DFM) are defined as live microorganisms that offer a health benefit for the host when administered in appropriate and regular quantities. Bacillus-based DFM are aerobic, spore-forming bacteria that may enhance the host animal’s immune response and improve growth performance in weanling pigs. Bacillus spp. also produce extracellular enzymes that may enhance digestibility and absorption of nutrients.

An experiment was, therefore, conducted to test the hypothesis that two DFM containing Bacillus strains (provided by Chr. Hansen A/S, Horsholm, Denmark) improve the apparent ileal digestibility (AID) of AA, CP, and GE, the apparent total tract digestibility (ATTD) of CP and GE, and hindgut digestibility of CP and GE when fed to growing pigs.

 

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Ileal amino acid digestibility values vary depending on the exogenous indigestible indexes in pigs fed a soybean meal-based diet

Kim, B. G., K. R. Park, and H. H. Stein. 2017. Ileal amino acid digestibility values vary depending on the exogenous indigestible indexes in pigs fed a soybean meal-based diet. J. Anim. Sci. 95(Suppl. 4):209 (Abstr.) Link to abstract (.pdf)

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Time course of indigestible indexes in the ileal out flow of pigs fed a soybean meal-based or nitrogen free diet

Kim, B. G., K. R. Park, and H. H. Stein. 2017. Time course of indigestible indexes in the ileal out flow of pigs fed a soybean meal-based or nitrogen free diet. J. Anim. Sci. 95(Suppl. 4):209 (Abstr.) Link to abstract (.pdf)

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Two days of adaptation period may be enough for measuring ileal amino acid digestibility using chromium or titanium as an indigestible index in swine diets

Kim, B. G., S. A. Lee, and H. H. Stein. 2017. Two days of adaptation period may be enough for measuring ileal amino acid digestibility using chromium or titanium as an indigestible index in swine diets. J. Anim. Sci. 95(Suppl. 4):44 (Abstr.) Link to abstract (.pdf)

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Diurnal variation of amino acid digestibility in pigs

Kim, B. G. and H. H. Stein. 2013. Diurnal variation of amino acid digestibility in pigs. J. Anim. Sci. 91(E-Suppl. 2):686 (Abstr.) Link to abstract

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Effects of ileal sample collection strategies on ileal digestibility of CP and the concentration of chromium in ileal digesta

Kim, B. G. and H. H. Stein. 2010. Effects of ileal sample collection strategies on ileal digestibility of CP and the concentration of chromium in ileal digesta. J. Anim. Sci. 88(E-Suppl. 2):491 (Abstr.) Link to abstract (.pdf)

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Effect of virginiamycin on the apparent ileal digestibility of amino acids by growing pigs

Stewart, L. L., B. G. Kim, B. R. Gramm, R. D. Nimmo, and H. H. Stein. 2010. Effect of virginiamycin on the apparent ileal digestibility of amino acids by growing pigs. J. Anim Sci. 88:1718-1724. Link to full text (.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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Apparent and true ileal digestibility of acid hydrolyzed ether extract in various feed ingredients fed to growing pigs

Kim, B. G, D. Y. Kil, and H. H. Stein. 2009. Apparent and true ileal digestibility of acid hydrolyzed ether extract in various feed ingredients fed to growing pigs. J. Anim. Sci. 87 (E-Suppl. 2):579 (Abstr.) Link to abstract (.pdf)

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Differences in total tract and ileal digestibility coefficients of calcium and phosphorus in growing pigs fed low phytate corn, normal corn, soybean meal, and corn soybean meal based diets

Bohlke, R. A., H. H. Stein, A. R. Wirt, and R. C. Thaler. 2003. Differences in total tract and ileal digestibility coefficients of calcium and phosphorus in growing pigs fed low phytate corn, normal corn, soybean meal, and corn soybean meal based diets. J. Anim. Sci. 81(Suppl. 1):100 (Abstr.) Link to abstract (.pdf)

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Ileal starch, apparent protein, and true protein digestibility of different corn hybrids fed to growing pigs

Andersen, L. L., J. L. Snow, P. K. Ku, H. H. Stein, M. Allen, and N. L. Trottier. 2000. Ileal starch, apparent protein, and true protein digestibility of different corn hybrids fed to growing pigs. J. Anim. Sci. 78(Suppl. 2):70 (Abstr.)

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Apparent ileal amino acid digestibilities of different corn hybrids fed to growing pigs

Snow, J. L., P. K. Ku, H. H. Stein, M. Allen, and N. L. Trottier. 1998. Apparent ileal amino acid digestibilities of different corn hybrids fed to growing pigs. J. Anim. Sci. 76(Suppl. 1):62 (Abstr.)

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Apparent and true ileal protein and amino acid digestibilities of casein for growing pigs and sows

Stein, H. H., J. Escobar, and R. A. Easter. 1998. Apparent and true ileal protein and amino acid digestibilities of casein for growing pigs and sows. J. Anim. Sci. 76(Suppl. 1):62 (Abstr.)

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Comparative digestibilities of amino acids in growing pigs and sows

Stein H. H. and R. A. Easter. 1997. Comparative digestibilities of amino acids in growing pigs and sows. J. Anim. Sci. 75(Suppl 1):191 (Abstr.)

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A technique for inserting a simple T-Cannula in the terminal ileum of pregnant sows

Stein, H. H. and R. A. Easter. 1996. A technique for inserting a simple T-Cannula in the terminal ileum of pregnant sows. J. Anim. Sci. 74(Suppl. 1):190 (Abstr.)

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