Completed research projects 2023

Go to completed research year 2022

Effect of xylanase and xylo-oligosaccharide on growth performance and gut health of weanling pigs.
Investigators: Acosta, J. P., C. D. Espinosa, and H. H. Stein.
Publication: J. Anim. Sci. Biotechnol. 2025. 16:68. doi:10.1186/s40104-025-01205-w.

Effects of yeast protein on phosphorus digestibility in diets fed to young pigs.
Investigators: Espinosa, C. D., J. A. Ibagon, and H. H. Stein.
Publication: NA.

Estimation of the optimum tryptophan:lysine ratio for 25–50 kg growing pigs fed soybean meal or corn protein as protein sources.
Investigators: Mallea, A. P., and H. H. Stein.
Publication: In preparation.

Effect of dietary leucine concentration on requirement for valine in diets for growing pigs.
Investigators: Mallea, A. P., C. D. Espinosa, and H. H. Stein.
Publication: In preparation.

Effects of different protein sources in phosphorus-free diets on the basal endogenous loss and retention of phosphorus by growing pigs.
Investigators: Nelson, M., S. A. Lee, and H. H. Stein.
Publication: Anim. Feed Sci. Technol. 2024. 310:1–6. doi:10.1016/j.anifeedsci.2024.115927.

Determination of DIAAS values in different egg products.
Investigators: Fanelli, N. S., and H. H. Stein.
Publication: J. Nutr. Sci. 2024. 13:e68, 1–11. doi:10.1017/jns.2024.71.

Determination of DIAAS and PDCAAS values for seven BENEO protein concentrates.
Investigators: Fanelli, N. S., and H. H. Stein.
Publication: NA.

Growth performance and intestinal health of weanling pigs fed diets containing high-protein corn co-products.
Investigators: Mallea, A. P., C. D. Espinosa, and H. H. Stein.
Publication: J. Anim. Sci. Biotechnol. 2024. 15:125. doi:10.1186/s40104-024-01082-9.

Concentration of net energy in corn without or with microbial phytase fed to group-housed pigs.
Investigators: Lee, S. A., D. A. Rodriguez, and H. H. Stein.
Publication: In preparation.

Effects of source of calcium carbonate and microbial phytase on apparent total tract digestibility of calcium.
Investigators: Nelson, M. E., S. A. Lee, and H. H. Stein.
Publication: Anim. Feed Sci. Technol. 2025. 320:116230. doi:10.1016/j.anifeedsci.2025.116230.

Effect of increasing levels of phytase on mineral and nitrogen balance and concentrations of digestible and metabolizable energy in diets fed to young growing pigs.
Investigators: Espinosa, C. D., S. A. Lee, and H. H. Stein.
Publication: In preparation.

Effect of NSPases alone or in combination with phytase on gut viscosity, energy and nutrient digestibility, and hindgut fermentation in growing pigs fed a complex diet.
Investigators: Acosta, J. P., M. A. Mallea, and H. H. Stein.
Publication: NA.

Effect of mannanase on growth performance of weanling pigs.
Investigators: Fanelli, N. S., and H. H. Stein.
Publication: NA.

Digestibility of amino acids, energy, and phosphorus and concentrations of net energy in corn coproducts fed to weanling pigs.
Investigators: Lee, S. A., C. D. Espinosa, and H. H. Stein.
Publication: NA.

Effect of Olextra 1200 on performance and intestinal health of sows and weanling pigs.
Investigators: Espinosa, C. D., J. P. Acosta, S. A. Lee, and H. H. Stein.
Publication: NA.

Effects of an exogenous protease on ileal digestibility of starch and amino acids and total tract digestibility of energy by growing pigs.
Investigators: Acosta, J. P., and H. H. Stein.
Publication: NA.

Determination of digestible indispensable amino acid score (DIAAS) values for milk proteins.
Investigators: Fanelli, N. S., C. F. R. Martins, and H. H. Stein.
Publication: In preparation.

Bioavailability of methionine sources on nitrogen retention of weanling pigs fed diets low in crude protein.
Investigators: Acosta, J. P., and H. H. Stein.
Publication: NA.

Effect of yeast protein on growth performance and blood characteristics of weanling pigs.
Investigators: Espinosa, C. D., and H. H. Stein.
Publication: NA.

Digestible indispensable amino acid scores (DIAAS) in pork products.
Investigators: Fanelli, N. S., and H. H. Stein.
Publication: J. Sci. Food Agric. Reports. 4:326–335. doi:10.1002/jsf2.215.

Effects of different levels of enzyme on apparent ileal digestibility of crude protein and amino acids and apparent total tract digestibility of energy, dietary fiber, calcium, and phosphorus in diets fed to growing pigs.
Investigators: Mallea, A. P., S. A. Lee, M. S. F. Oliveira, and H. H. Stein.
Publication: NA.

Effect of a mycelium supplement on growth performance of weanling pigs.
Investigators: Mallea, A. P., C. D. Espinosa, and H. H. Stein.
Publication: NA.

Effect of feeding graded levels of a phytogenic formulation on plasma concentrations in pigs.
Investigators: Lee, S. A., and H. H. Stein.
Publication: NA.

Effects of fasting time on heat production of group-housed pigs.
Investigators: Lee, S. A., D. A. Rodriguez, and H. H. Stein.
Publication: In preparation.

Evaluation of Biomega products in diets for humans and companion animals.
Investigators: Fanelli, N. S., M. DeGodoy, and H. H. Stein.
Publication: J. Sci. Food Agric. In Press.

Metabolizable energy in pistachio shell powder or soybean hulls when fed to growing pigs.
Investigators: Kim, Y., S. A. Lee, and H. H. Stein.
Publication: Transl. Anim. Sci. 2024. 8:1–9. doi:10.1093/tas/txae135.

Amino acid digestibility in yeast protein and in soybean meal fed to pigs.
Investigators: Lee, S. A., C. D. Espinosa, N. S. Fanelli, and H. H. Stein.
Publication: NA.

Human milk oligosaccharide-dependent engraftment of Bifidobacterium infantis (Bi) in pigs.
Investigators: Espinosa, C. D., and H. H. Stein.
Publication: NA.

Growth performance of weanling pigs fed diets supplemented with zinc oxide or tannic acid.
Investigators: Lee, S. A., and H. H. Stein.
Publication: NA.

Energy release values for fat emulsifier fed to growing pigs.
Investigators: Lee, S. A., C. D. Espinosa, and H. H. Stein.
Publication: NA.

Apparent ileal digestibility of fructans in a corn-soybean meal diet fed to growing pigs.
Investigators: Ibagon, J. A., and H. H. Stein.
Publication: NA.

Amino acid digestibility in five sources of extruded full-fat soybeans fed to growing pigs.
Investigators: Ruiz-Arias, N., and H. H. Stein.
Publication: Anim. Feed Sci. Technol. 116297. doi:10.1016/j.anifeedsci.2025.116297.

Effects of reducing particle size and extrusion on concentrations of digestible energy and metabolizable energy in corn fed to growing pigs.
Investigators: Marshal, C. M., S. A. Lee, and H. H. Stein.
Publication: In preparation.

Energy digestibility in five sources of extruded full-fat soybeans fed to growing pigs.
Investigators: Ruiz-Arias, N., and H. H. Stein.
Publication: Anim. Feed Sci. Technol. 2025. doi:10.1016/j.anifeedsci.2025.116335.

Phosphorus digestibility in five sources of extruded full-fat soybeans fed to growing pigs.
Investigators: Ruiz-Arias, N., and H. H. Stein.
Publication: Anim. Feed Sci. Technol. 2025. doi:10.1016/j.anifeedsci.2025.116335.

Feed preference of pigs fed diets containing extruded corn ground to different particle sizes.
Investigators: Marshal, C. M., S. A. Lee, and H. H. Stein.
Publication: In preparation.

Go to completed research year 2024