Acosta, Jessica P., Charmaine D. Espinosa, Gemma Gonzalez-Ortiz, Sofia Gonzalez-LasHeras, Maria J. Rodríguez-Lagunas, Francisco J. Perez-Cano, Hans H. Stein. 2024.

Stein. Hans H. 2024. Net energy of soybean meal. J. Anim. Sci Vol. 102, Suppl. S2. P 184. doi.org/10.1093/jas/skae102.205 Link to abstract.

Stein, Hans H. 2024. Anchor Talk: Accounting for effects of microbial phytase on digestibility of calcium and phosphorus. J. Anim. Sci Vol. 102, Suppl. S2. P 154. doi.org/10.1093/jas/skae102.170 Link to abstract.

Ruiz-Arias, Nelson C., Su A Lee, Hans H. Stein. 2024. Standardized ileal digestibility of amino acids and concentration of metabolizable energy in three sources of corn protein fed to weanling pigs. J. Anim. Sci Vol. 102, Suppl. S2. P 94 - 95. doi.org/10.1093/jas/skae102.106 Link to abstract.

Kim, Yeonwoo, Su A Lee, Hans H. Stein. 2024. Concentrations of energy in pistachio shell powder fed to gestating sows and lactating sows. J. Anim. Sci Vol. 102, Suppl. S2. P 90 - 91. doi.org/10.1093/jas/skae102.102 Link to abstract.

Cristobal, Minoy, Su A Lee, Andrea P. Mallea, Leidy J. Torres-Mendoza, Jessica P. Acosta, Carl M. M. Parsons, Hans H. Stein. 2024. Effect of feeding intact protein from soybean meal instead of crystalline amino acids on growth performance, protein synthesis, and immune response of growing pigs. J. Anim. Sci Vol. 102, Suppl. S2. P 45 - 46. doi.org/10.1093/jas/skae102.054 Link to abstract.

To reduce the cost of pork production, high-fiber ingredients are often used in diets, but an increase in the amount of dietary fiber in pig diets may have a negative impact on the digestibility of nutrients and energy. Carbon footprint from pork production is related to emissions of greenhouse gases including carbon dioxide, nitrous oxide, and methane from pigs. Emission of gases may be correlated with the composition of feeds, and it is thus possible that feeding pigs with diets containing high-fibrous feed ingredients affects the gas exchange, which also impacts concentration of net energy (NE) in diets.

Therefore, the objective of this experiment was to test the null hypothesis that feeding pigs with a high-fiber diet does not affect gas production, N excretion, and NE in diets fed to group-housed pigs.

Nelson, M. E., S. A. Lee, H. H. Stein. 2024. Effects of different protein sources in low-phosphorus diets on calculated basal endogenous loss of phosphorus by growing pigs. Animal Feed Science and Technology 310, 115927, doi.org/10.1016/j.anifeedsci.2024.115927 Link to full text.

The improvement of yield or oil content in soybean seeds, mainly through genetic modification, has often resulted in a decrease in protein concentration. However, a new genetic technology patented as Photoseed was used to develop a new variety of soybeans. By modifying genes involved in biosynthesis and storage of lipids, it was possible to increase the accumulation of lipid droplets and increase carbon capture. This resulted in soybeans that contain more oil, without negatively affecting crude protein concentration, compared with conventional soybeans. There is, however, no information about the nutritional value of the soybean meal produced from the Photoseed variety of soybeans. Therefore, the objective of this study was to test the hypothesis that nitrogen-corrected true metabolizable energy (TMEn), standardized amino acid (AA) digestibility, and apparent ileal P digestibility are not different in a soybean expeller (SBE) produced from a new variety of Photoseed soybeans compared with SBE produced from conventional soybeans.