Mathai

Effects of high neutral detergent fiber diets on the nitrogen balance of pigs fed threonine-limited diets

Mathai, J. K., H. L. Spangler, H. H. Stein, and K. J. Touchette. 2017. Effects of high neutral detergent fiber diets on the nitrogen balance of pigs fed threonine-limited diets. J. Anim. Sci. 95(Suppl. 5):136 (Abstr.) Link to abstract (.pdf)

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Non-antibiotic feed additives in diets for pigs

Liu, Y., D. Espinosa, J. J. Abelilla, G. A. Casas, L. V. Lagos, S. A. Lee, W. B. Kwon, J. K. Mathai, D. M.D. L. Navarro, N. W. Jaworski, and H. H. Stein. 2016. Non-antibiotic feed additives in diets for pigs. Pages 263-281 in Proceedings of the 2016 Chinese Swine Industry Symposium, Shanghai, China, October 20-21, 2016. Link to full text (.pdf)

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Effects of dietary fiber on the ideal standardized ileal digestible threonine:lysine ratio for twenty-five to fifty kilogram growing gilts

Mathai, J. K, J. K. Htoo, J. E. Thomson, K. J. Touchette, and H. H. Stein. 2016. Effects of dietary fiber on the ideal standardized ileal digestible threonine:lysine ratio for twenty-five to fifty kilogram growing gilts. J. Anim. Sci. 94:4217-4230. Link to abstract

Use of the pig to determine digestible indispensable amino acid scores (DIAAS) in human foods

Stein, H. H., and J. K. Mathai. 2016. Use of the pig to determine digestible indispensable amino acid scores (DIAAS) in human foods. Proc. 5th Intl. Symp. Energy and Protein. Krakow, Poland, Sep. 12 to 15, 2016.

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Amino acid digestibility in dairy proteins compared with plant proteins

Mathai, J. K., Y. Liu, and H. H. Stein. 2016. Amino acid digestibility in dairy proteins compared with plant proteins. J. Anim. Sci. 94(Suppl. 2):104 (Abstr.) Link to abstract (.pdf)

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Effects of dietary fiber on the optimum threonine:lysine ratio for 25- to 50-kg gilts

Mathai, J. K., J. K. Htoo, J. Thomson, K. J. Touchette, and H. H. Stein. 2015. Effects of dietary fiber on the optimum threonine:lysine ratio for 25- to 50-kg gilts. J. Anim. Sci. 93(Suppl. s3):298 (Abstr.) Link to abstract (.pdf)

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Effects of fiber on the optimal threonine:lysine ratio for 25 to 50 kg growing gilts

Use of high-fiber, low-cost ingredients, such as co-products from grain processing industries, in swine diets is increasing. Pigs fed diets containing high levels of fiber have increased intestinal mass due to increased amount of microbial fermentation in the hindgut. Therefore, they also have increased endogenous loss of amino acids in the form of mucins, the proteins that line the intestinal tract. The abrasiveness of fiber stimulates the secretion of mucins as well. These factors may cause the threonine requirement to be increased in high fiber diets, because threonine is present in large amounts in mucins. Therefore, an experiment was conducted to determine the effects of dietary fiber on the optimum threonine:lysine ratio (Thr:Lys) in 25 to 50 kg growing gilts.

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Estimation of the requirement for standardized ileal digestible lysine in 25 to 50 kg gilts

Lysine is the first limiting amino acid in swine diets based on corn and soybean meal. Lysine requirements for pigs are affected by growth rate and lean deposition rate, which in turn are affected by sex, genetics, age, and other factors. An experiment was conducted to determine the requirement for standardized ileal digestible (SID) lysine in 25 to 50 kg growing gilts.

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Amino acid digestibility in field peas, fish meal, corn, soybean meal, and soybean hulls

Mathai, J. K. and H. H. Stein. 2014. Amino acid digestibility in field peas, fish meal, corn, soybean meal, and soybean hulls. J. Anim. Sci 92(E-Suppl. 2):648 (Abstr.) Link to abstract (.pdf)

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Estimated lysine requirement of 25 to 50 kg growing gilts

Mathai, J. K. and H. H. Stein. 2014. Estimated lysine requirement of 25 to 50 kg growing gilts. J. Anim. Sci 92(E-Suppl. 2):218-219 (Abstr.) Link to abstract (.pdf)

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Nutritional value of dried fermentation biomass, hydrolyzed porcine intestinal mucosa products, and fish meal fed to weanling pigs

Sulabo, R. C., J. K. Mathai, J. L. Usry, B. W. Ratliff, D. M. McKilligan, J. D. Moline, G. Xu, and H. H. Stein. 2013. Nutritional value of dried fermentation biomass, hydrolyzed porcine intestinal mucosa products, and fish meal fed to weanling pigs. J. Anim. Sci. 91:2802-2811. Link to full text (.pdf)

Effects of including microbial phytase in diets fed to pigs and broilers

Lowell, J. E., M. Song, J. K. Mathai, and H. H. Stein. 2013. Effects of including microbial phytase in diets fed to pigs and broilers. J. Anim. Sci. 91(Suppl. 2):121 (Abstr.) Link to abstract (.pdf)

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Energy concentration and amino acid digestibility in corn and corn co-products fed to growing pigs

Song, M., J. K. Mathai, F. N. Almeida, O. J. Rojas, S. L. Tilton, M. J. Cecava, and H. H. Stein. 2013. Energy concentration and amino acid digestibility in corn and corn co-products fed to growing pigs. J. Anim. Sci. 91(Suppl. 2):23-24 (Abstr.) Link to abstract (.pdf)

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Amino acid digestibility and energy content in dried fermentation biomass, Peptone 50, and P.E.P. Two Plus fed to weanling pigs

Sulabo, R. C., J. K. Mathai, J. L. Usry, B. W. Ratliff, D. M. McKilligan, and H. H. Stein. 2011. Amino acid digestibility and energy content in dried fermentation biomass, Peptone 50, and P.E.P. Two Plus fed to weanling pigs. J. Anim. Sci. 89(E-Suppl. 1):440-441 (Abstr.) Link to abstract (.pdf)

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Standardized total tract digestibility of P in dried fermentation biomass, Peptone 50, and P.E.P. 2 Plus fed to weanling pigs

Mathai, J. K., R. C. Sulabo, J. L. Usry, B. W. Ratliff, D. M. McKilligan, and H. H. Stein. 2011. Standardized total tract digestibility of P in dried fermentation biomass, Peptone 50, and P.E.P. 2 Plus fed to weanling pigs. J. Anim. Sci. 89(E-Suppl. 1):85 (Abstr.) Link to abstract (.pdf)

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