Stein

Increasing calcium from deficient to adequate concentration in diets for gestating sows decreases digestibility of phosphorus and reduces serum concentration of a bone resorption biomarker

Lee, Su A.,  L. Vanessa Lagos, Mike R. Bedford, and Hans H. Stein. 2020. Increasing calcium from deficient to adequate concentration in diets for gestating sows decreases digestibility of phosphorus and reduces serum concentration of a bone resorption biomarker. Journal of Animal Science, 2020,  Vol. 98: No. 3:1-8.

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Tryptophan can partially overcome negative effects of leucine in pig diets

Kwon, W. B., and H. H. Stein. 2020. Tryptophan can partially overcome negative effects of leucine in pig diets. National Hog Farmer, Online edition. Jan.

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Effect of increasing levels of Sylpro yeast on growth performance and blood characteristics of weanling pigs

Sylpro enhanced torula yeast is a high protein feed ingredient derived from forestry by-products, and results from digestibility experiments indicate that Sylpro yeast may be a valuable source of energy and digestible amino acids in diets fed to weanling pigs. As a consequence, it is believed that Sylpro yeast may be included in diets for weanling pigs at the expense of fish meal and other animal protein sources. Therefore, an experiment was conducted to test the hypothesis that increasing levels of Sylpro yeast improve growth performance and blood characteristics of weanling pigs.

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Digestible and metabolizable energy in corn- or sorghum based diets may be improved by addition of a xylanase-cellulase enzyme mixture

Exogenous carbohydrases can be used in diets for pigs to increase digestibility of dietary fiber and energy in cereal grains and cereal co-products. The three main fibers in cereal grains and cereal co-products are arabinoxylans, cellulose, and mixed-linked beta glucans. The fermentability is different among these three types of fiber. Energy digestibility is often improved if xylanase is added to wheat-based diets, whereas positive responses to xylanase in corn-based diets have been difficult to demonstrate, indicating that fermentation of dietary fiber differs among ingredients. However, there is less information about effects of carbohydrases on digestibility of fiber and energy in sorghum-based diets. Therefore, an experiment was conducted to test the hypothesis that xylanase and cellulase improve the digestibility of energy and total dietary fiber in diets based on corn or sorghum with addition of high fiber co-products.

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Pork Products Have Digestible Indispensable Amino Acid Scores (DIAAS) That Are Greater Than 100 When Determined in Pigs, but Processing Does Not Always Increase DIAAS

Bailey, Hannah M., John K. Mathai, Eric P. Berg, and Hans H. Stein. 2020. Pork Products Have Digestible Indispensable Amino Acid Scores (DIAAS) That Are Greater Than 100 When Determined in Pigs, but Processing Does Not Always Increase DIAAS. The Journal of Nutrition. Nutrient Physiology, Metabolism, and Nutrient-Nutrient Interactions. doi: https://doi.org/10.1093/jn/nxz284.

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Inclusion of the direct-fed microbial Clostridium butyricum in diets for weanling pigs increases growth performance and tends to increase villus height and crypt depth, but does not change intestinal microbial abundance

Casas, Gloria A., Laia Blavi, Tzu-Wen L. Cross, Anne H. Lee, Kelly S. Swanson, and Hans H. Stein. 2020. Inclusion of the direct-fed microbial Clostridium butyricum in diets for weanling pigs increases growth performance and tends to increase villus height and crypt depth, but does not change intestinal microbial abundance. Journal of Animal Science, 2020, 1–12. doi:10.1093/jas/skz372.

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Torula yeast has greater digestibility of amino acids and phosphorus, but not energy, compared with a commercial source of fish meal fed to weanling pigs

Lagos, Vanessa L., Hans H. Stein. 2020. Torula yeast has greater digestibility of amino acids and phosphorus, but not energy, compared with a commercial source of fish meal fed to weanling pigs. Journal of Animal Science, 2020, 1-9. doi:10.1093/jas/skz375. Link to full text.

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Effects of including two sources of copper hydroxychloride in diets for growing-finishing pigs

Recent research conducted at the University of Illinois Swine Research Center demonstrated positive effects of feeding copper hydroxychloride to weanling pigs, including improved growth performance and positive changes in intestinal health. It is, however, not known if copper hydroxychloride would also elicit positive effects in growing-finishing pigs. Additionally, it is also not known if the positive effects of copper hydroxychloride are obtained regardless of the origin of the mineral, or if the response is specific to the product produced by a specific supplier. Therefore, an experiment was conducted to test the hypothesis that inclusion of copper hydroxychloride in diets for growing-finishing pigs would improve growth performance, and secondly that the origin of the copper hydroxychloride is not important for the outcome.

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Effects of super dosing 4 different sources of phytase on amino acid digestibility

Dietary phytate may bind to proteins from feed ingredients by making indigestible nutrient-complexes. Therefore, it is possible that adding exogenous phytase to the diets increases digestibility of amino acids (AA). However, results of experiments in which microbial phytase has been added to diets fed to pigs have not consistently demonstrated increased ileal digestibility of AA. It is, however, possible that is because the dose of phytase was too low to obtain a positive effect on AA digestibility and that if greater doses were used, a positive response would be obtained. Therefore, the objective of this experiment was to test the hypothesis that super dosing four different sources of commercially available exogenous phytase increases the apparent ileal digestibility (AID) of CP and AA in a corn-soybean meal (SBM) based diet fed to growing pigs.

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Effects of intrinsic phytase from hybrid rye on P and Ca digestibility in a corn-soybean meal diet

Rye contains considerable quantities of intrinsic phytase and the presence of phytase in rye may result in an increased P digestibility in pigs without using exogenous phytase. It is possible that the endogenous phytase in rye also increases P digestibility in other plant feed ingredients by releasing P from the phytate. However, to our knowledge, no data demonstrating this effect have been published. Therefore, the objective of this experiment was to test the hypothesis that inclusion of rye in diets containing corn and soybean meal (SBM) without or with microbial phytase improves the apparent total tract digestibility (ATTD) of P and Ca and thus the ATTD of P is not additive in the mixed diet.

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A review: 100 years of soybean meal. A historical look at the soybean and its use for animal feed.

Ruiz, N., C.M. Parsons, H. H. Stein, C.N. Coon, J. E. van Eys, and R. D. Miles. 2020. A review: 100 years of soybean meal, A historical look at the soybean and its use for animal feed. Feedstuffs. January 24, 2020. Link to full text.

Apparent energy, dry matter and amino acid digestibility of differently sourced soybean meal fed to Pacific white shrimp Litopenaeus vannamei

Galkanda‐Arachchige, Harsha S. C., Jingping Guo, Hans H. Stein. Donald Allen Davis. 2020. Apparent energy, dry matter and amino acid digestibility of differently sourced soybean meal fed to Pacific white shrimp Litopenaeus vannamei. Aquaculture Research. 2020;51:326–340, DOI: 10.1111/are.14378. Link to full text.

Effects of inclusion of hybrid rye in diets on growth performance and diarrhea incidence of weanling pigs

Production of hybrid rye in North America is increasing after being introduced to Canada and the United States in 2014 and 2016, respectively. Compared with corn, hybrid rye contains similar amounts of standardized ileal digestible amino acids, a greater concentration of standardized total tract digestible P, and approximately 94% of the metabolizable energy. Hybrid rye contains more fermentable dietary fiber than corn, which has the potential to improve gut health, but its reduced digestibility of amino acids may simultaneously have a negative impact on the health of the large intestine. Two experiments were conducted to determine the maximum amount of hybrid rye that can be included in diets for weanling pigs without influencing growth performance or diarrhea incidence.

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Digestibility of energy, and total dietary fiber, and concentration of digestible and metabolizable energy in soybean expeller and soybean meal fed to growing pigs

When soybeans are crushed, the oil may be solvent extracted and the resulting defatted soybeans are known as soybean meal (SBM). However, the oil may also be mechanically expelled from the beans and the defatted soybeans resulting from this procedure is an ingredient known as soybean expellers. The expelling procedure is less efficient in removing oil from the beans and soybean expellers, therefore, contain more residual oil than SBM. Soybean expellers can be produced using different technologies, and a new procedure involving a patented high shear dry extrusion procedure was recently developed (Insta-Pro International, Des Moines, IA). There are however, no data for the apparent total tract digestibility (ATTD) of GE and total dietary fiber (TDF) and DE and ME concentrations in the soybean expellers that are produced from this procedure. Therefore, the objective of this research was to test the hypothesis that the ATTD of GE and TDF and concentrations of DE and ME are greater in soybean expellers than in SBM when fed to growing pigs.

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Effects of copper hydroxychloride and distillers dried grains with solubles on intestinal microbial concentration and apparent ileal and total tract digestibility of energy and nutrients by growing pigs

Espinosa, Ch. D, R. Scott Fry, Matthew E. Kocher, Hans H. Stein. 2019. Effects of copper hydroxychloride and distillers dried grains with solubles on intestinal microbial concentration and apparent ileal and total tract digestibility of energy and nutrients by growing pigs. Journal of Animal Science, 2019, 4904–4911.

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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Digestibility of an enzyme treated soybean meal for calf starter in weaned dairy calves

Ansia, I., H.H. Stein, C. Brøkner, D.A. Vermeire, and J.K. Drackley. 2019. Digestibility of an enzyme treated soybean meal for calf starter in weaned dairy calves. Abstract 13 in 37th ADSA Discover Conference Program: Natural Bioactives in Dairy Production: Science, Functions and the Future, Itasca, IL. (Abstr.). Link to abstract.

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Effects of copper hydroxychloride and choice white grease on growth performance and blood characteristics of weanling pigs kept at normal ambient temperature or under heat stress

Espinosa, C. D., R. S. Fry, J. Usry, and H. H. Stein. 2019. Effects of copper hydroxychloride and choice white grease on growth performance and blood characteristics of weanling pigs kept at normal ambient temperature or under heat stress. Anim. Feed Sci. Technol.256:114257. doi.org/10.1016/j.anifeedsci.2019.114257. Link to full text.

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Multi vs. single application of enzymes to degrade fibre in diets for pigs

Stein, H. H. 2019. Multi vs. single application of enzymes to degrade fibre in diets for pigs. In (eds. G. Gonzalez-Ortiz, M. R. Bedford, K. E. Back Knudsen, C. M. Courtin, and H. L. Classen): The value of fibre – engaging the second brain for animal nutrition. Wageningen Academic Publishers, Wageningen, the Netherlands.

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Disappearance of dietary fibre in the small intestine, large intestine, and total tract of growing pigs fed corn- or wheat-based diets without or with microbial xylanase

Abelilla, J. J., and H. H. Stein. 2019. Disappearance of dietary fibre in the small intestine, large intestine, and total tract of growing pigs fed corn- or wheat-based diets without or with microbial xylanase. Manipulating Pig Production XVII. Proc. 17th Biennial Conference of the Australasian Pig Sci. Ass. (APSA), Adelaide, Australia, 17-20 Nov. 2019. Adv. Anim.

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