nitrogen retention

Impact of soybean oil on net energy and nitrogen balance in group-housed pigs allowed ad libitum access to feed

Diets for pigs may vary in composition and in their concentration of the energy containing nutrients (i.e., protein, fat, starch and sugars, and dietary fiber). To our knowledge, however, there is no information on how concentration of net energy (NE) is affected by dietary fat concentrations in diets fed to group-housed pigs. Therefore, the objective of this experiment is to test the hypothesis that increased soybean oil in diets for group-housed growing pigs will increase NE and nitrogen balance.

Keywords: 
Fat, Net energy, nitrogen balance, nitrogen retention, Pigs, Soybean oil
Authors: 
Lee, Stein
Publication Type: 
Research Reports

Determination of net energy and nitrogen balance in group-housed pigs fed diets containing varying levels of starch and fiber

Diets for pigs may vary in composition and in their concentration of the energy containing nutrients (i.e., protein, fat, starch and sugars, and dietary fiber). To our knowledge, however, there is no information on how concentration of net energy (NE) is affected by dietary starch and fiber concentrations in diets fed to group-housed pigs. Therefore, the objective of this experiment is to determine NE and nitrogen balance in diets containing various levels of starch and fiber fed to group-housed pigs.

 

Keywords: 
Distillers dried grains with solubles, Net energy, nitrogen retention, Pigs, Starch
Authors: 
Lee, Stein
Publication Type: 
Research Reports

Soybean meal or crystalline amino acids in diets for growing pigs: Impact on diet net energy, pig growth performance, and nitrogen retention

Stein, Hans H. Jimena A. Ibagon, Minoy Cristobal. 2024. Soybean meal or crystalline amino acids in diets for growing pigs: Impact on diet net energy, pig growth performance, and nitrogen retention. Proc. 23nd Annual Midwest Swine Nutrition Conf. Danville, IN, Sep. 5, 2024. Pages 45-51.

Keywords: 
Soybean meal, crystalline amino acids, Growing pigs, Net energy, nitrogen retention
Authors: 
Stein, Ibagon, Cristobal
Publication Type: 
Conference proceedings

Effects of supplemental d-methionine in comparison to l-methionine on nitrogen retention, gut morphology, antioxidant status, and mRNA abundance of amino acid transporters in weanling pigs

Espinosa, Charmaine D., John K. Mathai, Laia Blavi, Yanhong Liu, John K. Htoo, J. Caroline Gonzalez-Vega, and Hans H. Stein. 2021. Effects of supplemental d-methionine in comparison to l-methionine on nitrogen retention, gut morphology, antioxidant status, and mRNA abundance of amino acid transporters in weanling pigs. Journal of Animal Science, 2021, Vol. 99, No. 9, 1–10. doi.org/10.1093/jas/skab248.

Keywords: 
Bioavailability, D-methionine, L-methionine, methionine, nitrogen retention, Pigs
Authors: 
Espinosa, Mathai, Blavi, Liu, Htoo, González-Vega, Stein
Publication Type: 
Peer-reviewed journal articles