Bioavailability

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

Relative bioavailability by nursery pigs of Zn in a new source of Zn-glycinate

Zinc (Zn) is an essential trace element that is needed for growth, bone development, and immune competence. Inorganic Zn sources such as Zn oxide and Zn sulfate (ZnSO4) are most commonly used in swine diets. However, because of low bioavailability of Zn the inorganic Zn sources chelated Zn sources may be used instead because these sources have greater bioavailability of Zn. Chelated zinc may also reduce reactiveness with other components of the diet. A new chelated Zn source, zinc bis-glycinate, in which Zn is bound to two glycine molecules, was recently developed, but there is limited information about effects of this new chelated Zn source on digestibility and Zn retention in pigs. Therefore, an experiment was conducted to test the hypothesis that the relative bioavailability by weanling pigs of Zn in Zn bis-glycinate is greater than in Zn mono-glycinate and in ZnSO4.

Keywords: 
Bioavailability, chelated minerals, Pigs, Zinc
Authors: 
Oliveira, Stein
Publication Type: 
Research Reports

Bioavailability of valine in spray-dried L-valine biomass is not different from that in crystalline L-valine when fed to weanling pigs

Oliveira, Maryane S. F., John K. Htoo, J. Caroline González-Vega, and Hans H. Stein. 2019. Bioavailability of valine in spray-dried L-valine biomass is not different from that in crystalline L-valine when fed to weanling pigs. Journal of Animal Science, 2019, 4227–4234. Link to full text.

Keywords: 
Bioavailability, fermentation biomass, Growth performance, Pigs, valine
Authors: 
Oliveira, Htoo, González-Vega, Stein
Publication Type: 
Peer-reviewed journal articles

Bioavailability of valine in a fermentation biomass product relative to the bioavailability in crystalline L-valine when fed to weanling pigs

Maryane S. Faria de Oliveira, John K. Htoo, Caroline J. González-Vega, John E. Thomson, Hans H. Stein . Bioavailability of valine in a fermentation biomass product relative to the bioavailability in crystalline L-valine when fed to weanling pigs. Journal of Animal Science, Volume 97, Issue Supplement_2, July 2019, Pages 78–79. (Abstr.). Link to abstract.

Keywords: 
Bioavailability, valine, Performance
Authors: 
Oliveira, Htoo, González-Vega, Thomson, Stein
Publication Type: 
Abstracts

Standardized amino acid digestibility in cecectomized roosters and lysine bioavailability in chicks fed distillers dried grains with solubles

Pahm, A. A., C. S. Scherer, J. E. Pettigrew, D. H. Baker, C. M. Parsons, and H. H. Stein. 2009. Standardized amino acid digestibility in cecectomized roosters and lysine bioavailability in chicks fed distillers dried grains with solubles. Poult. Sci. 88:571-578. Link to full text (.pdf)

Keywords: 
Amino acids, Distillers dried grains with solubles, Bioavailability, Standardized digestibility, Lysine
Authors: 
Pettigrew, Pahm, Scherer, Parsons, BakerDH, Stein
Publication Type: 
Peer-reviewed journal articles

Bioavailability: Amino acids

Nyachoti, C. M. and H. H. Stein. 2005. Bioavailability: Amino acids. Encyclopedia of Animal Science. Marcel Dekker Inc. Link to full text (.pdf)

Keywords: 
Amino acids, Digestibility, Amino acid digestibility, Standardized ileal digestibility, Bioavailability, Apparent ileal digestibility, True ileal digestibility
Authors: 
Nyachoti, Stein
Publication Type: 
Peer-reviewed journal articles