Lysine

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 full text (.pdf)

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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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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Estimation of the ideal tryptophan:lysine ration in 10- to 20-kg pigs

Petersen, G. I. and H. H. Stein. 2012. Estimation of the ideal tryptophan:lysine ration in 10- to 20-kg pigs. J. Anim. Sci. 90(E-Suppl. 2):60 (Abstr.) Link to abstract (.pdf)

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Determination of Lys and Trp requirements in 10 to 20 kg pigs

Petersen, G. I. and H. H. Stein. 2011. Determination of Lys and Trp requirements in 10 to 20 kg pigs. J. Anim. Sci. 89(E-Suppl. 2):100 (Abstr.) Link to abstract (.pdf)

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True ileal amino acid digestibility in cecectomized roosters and lysine bioavailability in chicks fed distillers dried grains with solubles

Pahm, A. A., J. E. Pettigrew, C. S. Scherer, D. H. Baker, C. M. Parsons, and H. H. Stein. 2008. True ileal amino acid digestibility in cecectomized roosters and lysine bioavailability in chicks fed distillers dried grains with solubles. J. Anim. Sci. 86(E-Suppl. 2):180 (Abstr.) Link to abstract (.pdf)

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Standardized ileal digestibility of reactive lysine in distillers dried grains with solubles (DDGS) fed to growing pigs

Pahm, A. A., C. Pedersen, and H. H. Stein. 2008. Standardized ileal digestibility of reactive lysine in distillers dried grains with solubles (DDGS) fed to growing pigs. J. Anim. Sci. 86(E-Suppl. 3):87 (Abstr.) Link to abstract (.pdf)

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Prediction of lysine availability in DDGS from optical density and front-face fluorescence.

Urriola, P. E., A. A. Pahm, J. E. Pettigrew, G. C. Shurson, H. H. Stein. 2007. Prediction of lysine availability in DDGS from optical density and front-face fluorescence. J. Anim. Sci. 84 (Suppl. 1) (Abstr.) Link to abstract (.pdf)

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Evaluation of lysine digestibility in rumen undegraded protein using the precision-fed rooster assay and two in vitro methods

Boucher, S. E., C. Pedersen, H. H. Stein, C. M. Parsons, and C. G. Schwab. 2007. Evaluation of lysine digestibility in rumen undegraded protein using the precision-fed rooster assay and two in vitro methods. J. Anim. Sci. 85(Suppl. 1):682 (Abstr.) Link to abstract (.pdf)

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Reactive lysine in distillers dried grains and distillers dried grains with solubles measured with the homoarginine or the furosine procedure

Pahm, A. A., C. Pedersen, D. Simon, H. H. Stein. 2007. Reactive lysine in distillers dried grains and distillers dried grains with solubles measured with the homoarginine or the furosine procedure. J. Anim. Sci. 85(Suppl. 1):513 (Abstr.) Link to abstract (.pdf)

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Amino acid digestibility and measurement of blocked lysine in five samples of distillers dried grains with solubles in growing pigs

Pahm, A. A., D. Hoehler, C. Pedersen, D. Simon, H. H. Stein. 2006. Amino acid digestibility and measurement of blocked lysine in five samples of distillers dried grains with solubles in growing pigs. J. Anim. Sci. 84 (Suppl. 1):285 (Abstr.) Link to abstract (.pdf)

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Evaluation of reactive lysine (Homoarginine) as an in-vitro procedure to predict lysine digestibility of distillers dried grains with solubles by growing pigs

Pahm, A. A., C. Pedersen, and H. H. Stein. 2006. Evaluation of reactive lysine (Homoarginine) as an in-vitro procedure to predict lysine digestibility of distillers dried grains with solubles by growing pigs. J. Anim. Sci. 84 (Suppl. 2):90 (Abstr.) Link to abstract (.pdf)

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Evaluation of gender and lysine during the nursery period

Hill, G. M., S. K. Baidoo, G. L. Cromwell, D. C. Mahan, J. L. Nelssen, and H. H. Stein. 2005. Evaluation of gender and lysine during the nursery period. J. Anim. Sci. 83(Suppl. 1):212 (Abstr.) Link to abstract (.pdf)

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Estimating the true ileal digestibility of soy products using the homoarginine technique

Smiricky-Tjardes, M. R., D. M. Albin, J. E. Wubben, V. M. Gabert, and H. H. Stein. 2003. Estimating the true ileal digestibility of soy products using the homoarginine technique. Pages 25-27 in Proc. 9th Intl. Symp. Digest. Phys. in Pigs, Banff, Alberta, Canada, May 14-17, 2003 (Abstr.)

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Effect of lysine intake on reproductive performance in first parity sows

Wilson, M. E., H. H. Stein, N. L. Trottier, D. D. Hall, R. L. Moser, D. E. Orr, and R. A. Easter. 1996. Effect of lysine intake on reproductive performance in first parity sows. J. Anim. Sci. 74(Suppl. 1):63 (Abstr.)

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Feeding DDGS to pigs: What is new?

Stein, H. H. 2007. Feeding DDGS to pigs: What is new? Page 37-41 in Proc. Swine Nutr. Conf. Sep. 6, 2007, Indianapolis, IN.  Link to full text (.pdf)

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Methods for measuring amino acid digestibility in corn co-products

Stein, H. H., C. Pedersen, and A. A. Pahm. 2005. Methods for measuring amino acid digestibility in corn co-products. Page 35-49. Proc. 66th Minnesota Nutr. Conf.  Link to full text (.pdf)

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All pigs are not equal when setting lysine levels

Baker, D. H., R. R. Biehl, and H. H. Stein. 1995. All pigs are not equal when setting lysine levels. National Hog Farmer, Jan. 1995. P. 44-45. Link to full text (.pdf)

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