Liu

Effects of graded levels of an Escherichia coli phytase on growth performance, apparent total tract digestibility of phosphorus, and on bone parameters of weanling pigs fed phosphorus-deficient corn-soybean meal based diets

She, Y., Y. Liu, J. C. González-Vega, and H. H. Stein. 2017. Effects of graded levels of an Escherichia coli phytase on growth performance, apparent total tract digestibility of phosphorus, and on bone parameters of weanling pigs fed phosphorus-deficient corn-soybean meal based diets. Anim. Feed Sci. Technol. 232:102-109. Link to abstract

Amino acid digestibility by weanling pigs of processed ingredients originating from soybeans, 00-rapeseeds, or a fermented mixture of plant ingredients

Navarro, D. M. D. L., Y. Liu, T. S. Bruun, and H. H. Stein. 2017. Amino acid digestibility by weanling pigs of processed ingredients originating from soybeans, 00-rapeseeds, or a fermented mixture of plant ingredients. J. Anim. Sci. 95:2658-2669. Link to abstract

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Effects of graded levels of microbial phytase on apparent total tract digestibility of calcium and phosphorus and standardized total tract digestibility of phosphorus in four sources of canola meal and in soybean meal fed to growing pigs

She, Y., Y. Liu, and H. H. Stein. 2017. Effects of graded levels of microbial phytase on apparent total tract digestibility of calcium and phosphorus and standardized total tract digestibility of phosphorus in four sources of canola meal and in soybean meal fed to growing pigs. J. Anim. Sci. 95:2061-2070. Link to abstract

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Productivity of sows fed diets containing canola meal produced from high protein or conventional varieties of canola seeds during gestation and lactation

Canola meal is second only to soybean meal as a protein source used in animal diets. However, the digestibility of amino acids and digestible energy is lower in canola meal than in soybean meal because of the high concentration of fiber in canola meal. The high fiber content and the presence of glucosinolates limit inclusion of canola meal in diets fed to pigs.

Research on using canola meal in pig diets at different stages has indicated that it can be used in gestation diets without limitation and 15 to 20% may be included in lactation diets. However, at least one study indicated that including canola meal in gestating and lactation diets reduced the number of pigs born alive and the number of pigs weaned, and also reduced lactation feed intake and litter weaning weight.

New canola varieties have been developed that yield meal with more protein and less fiber compared with conventional canola meal (CM-CV). The objectives of this research were to determine the effects of feeding diets containing high protein canola meal (CM-HP) or CM-CV to sows during gestation and lactation, and to determine the optimum inclusion rates of CM-HP and CM-CV in gestation and lactation diets.

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Effects of ileal digesta collection time on standardized ileal digestibility of amino acids in corn, soybean meal, and distiller’s dried grains with solubles fed to growing pigs

Kim, B. G., Y. Liu, and H. H. Stein. 2017. Effects of ileal digesta collection time on standardized ileal digestibility of amino acids in corn, soybean meal, and distiller’s dried grains with solubles fed to growing pigs. J. Anim. Sci. 95:789-798. Link to abstract

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Effects of diet energy concentration and an exogenous carbohydrase on growth performance of weanling pigs fed diets containing canola meal produced from high protein or conventional canola seeds

Pedersen, T. F., Y. Liu, and H. H. Stein. 2016. Effects of diet energy concentration and an exogenous carbohydrase on growth performance of weanling pigs fed diets containing canola meal produced from high protein or conventional canola seeds. J. Anim. Sci 94:5206-5218. Link to abstract

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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 collection time on flow of chromium and dry matter and on basal ileal endogenous losses of amino acids in growing pigs

Kim, B. G., Y. Liu, and H. H. Stein. 2016. Effects of collection time on flow of chromium and dry matter and on basal ileal endogenous losses of amino acids in growing pigs. J. Anim. Sci. 94:4196-4204. Link to full text (.pdf)

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Requirement for digestible calcium by eleven- to twenty-five–kg pigs as determined by growth performance, bone ash concentration, calcium and phosphorus balances, and expression of genes involved in transport of calcium in intestinal and kidney cells

González-Vega, J. C., Y. Liu, J. C. McCann, C. L. Walk, J. J. Loor, and H. H. Stein. 2016. Requirement for digestible calcium by eleven- to twenty-five–kilogram pigs as determined by growth performance, bone ash concentration, calcium and phosphorus balances, and expression of genes involved in transport of calcium in intestinal and kidney cells. J. Anim. Sci. 94:3321-3334. Link to full text (.pdf)

Effects of inclusion of canola meal in weanling pig diets containing different concentrations of energy

Pedersen, T. F., Y. Liu, and H. H. Stein. 2016. Effects of inclusion of canola meal in weanling pig diets containing different concentrations of energy. J. Anim. Sci. 94(E-Suppl. 5):459 (Abstr.) Link to abstract (.pdf)

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Xylanase responses on apparent ileal digestibility of nutrients, fiber and energy in growing pigs fed corn, 30% corn co-products and soybean meal based diets as influenced by microbial phytase and acclimatization period

Kiarie, E., Y. Liu, M. C. Walsh, H. H. Stein, and L. Payling. 2016. Xylanase responses on apparent ileal digestibility of nutrients, fiber and energy in growing pigs fed corn, 30% corn co-products and soybean meal based diets as influenced by microbial phytase and acclimatization period. J. Anim. Sci. 94(Suppl. 2):112-113 (Abstr.) Link to abstract (.pdf)

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Effects of a novel phytase on growth performance and metacarpal bone ash in weanling pigs

Liu, Y., J. C. González-Vega, M. Vázquez-Añón, J. Zhao, J. Escobar, F. N. Almeida, and H. H. Stein. 2016. Effects of a novel phytase on growth performance and metacarpal bone ash in weanling pigs. J. Anim. Sci. 94(Suppl. 2):111-112 (Abstr.) Link to abstract (.pdf)

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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 particle size of yellow dent corn on physical characteristics of diets and growth performance and carcass characteristics of growing–finishing pigs

Rojas, O. J., Y. Liu, and H. H. Stein. 2016. Effects of particle size of yellow dent corn on physical characteristics of diets and growth performance and carcass characteristics of growing–finishing pigs. J. Anim. Sci. 94:619-628. Link to full text (.pdf)

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Energy concentration and amino acid digestibility in high protein canola meal, conventional canola meal, and in soybean meal fed to growing pigs

Liu, Y., N. W. Jaworski, O. J. Rojas, and H. H. Stein. 2016. Energy concentration and amino acid digestibility in high protein canola meal, conventional canola meal, and in soybean meal fed to growing pigs. J. Anim. Feed Sci. Technol. 212:52-62. Link to full text (.pdf)

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Nutritional value of high fiber co-products from the copra, palm kernel, and rice industries in diets fed to pigs

Stein, H. H., G. A. Casas, J. J. Abelilla, Y. Liu, and R. C. Sulabo. 2015. Nutritional value of high fiber co-products from the copra, palm kernel, and rice industries in diets fed to pigs. J. Anim. Sci. Biotechnol. 6:56. Link to full text (.pdf)

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Growth performance and bone mineralization in weanling pigs fed diets containing different levels of digestible calcium and digestible phosphorus

It is important to include calcium and phosphorus in the diets in the proper proportions because the excess or deficiency of one mineral may affect the utilization of the other. Calcium requirements in the 2012 NRC are based on a model, which used a 2.15 ratio of total calcium to standardized total tract digestible (STTD) phosphorus. An optimal ratio of STTD calcium to STTD phosphorus has not been reported because not enough data exist on the standardized total tract digestibility of calcium. However, recent studies conducted by the Stein Monogastric Nutrition Lab have determined values for STTD calcium for several calcium sources. With these data, it is possible to determine the requirement for STTD calcium. Therefore, an experiment was conducted to determine the requirement of STTD calcium to maximize growth performance and bone ash in 11 to 25 kg pigs.

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Effect of Sal CURB on digestibility of energy and nutrients by growing pigs

Liu, Y. and H. H. Stein. 2015. Effect of Sal CURB on digestibility of energy and nutrients by growing pigs. J. Anim. Sci. 93(Suppl. s3):855-856 (Abstr.) Link to abstract (.pdf)

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Apparent and standardized total tract digestibility by growing pigs of phosphorus in canola meal from North America and 00-rapeseed meal and 00-rapeseed expellers from Europe without and with microbial phytase

Maison, T., Y. Liu, and H. H. Stein. 2015. Apparent and standardized total tract digestibility by growing pigs of phosphorus in canola meal from North America and 00-rapeseed meal and 00-rapeseed expellers from Europe without and with microbial phytase. J. Anim. Sci. 93:3494-3502. Link to full text (.pdf)

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