Methionine: an essential amino acid and potential enhancer of antioxidant systems in swine diets
Author
Humphrey, Rebecca M.
Item Type
Graduate ThesisAdvisor
Liao, ShengfaCommittee
Dinh, ThuDevost-Burnett, Derris
Feugang, Jean M.N.
Embargo Type
Visible to MSU only for 2 yearsEmbargo Lift Date
2022-12-15Metrics
Abstract
L-Methionine (L-Met) is a new product that supplies the biologically active form of
methionine. Therefore, the objective of this study was to elucidate the benefits of dietary L-Met
supplementation relative to the industry standard DL-Met. Sixteen gilts with an initial BW
81.2±7.93 kg were individually penned and randomly allotted to one of two equivalent dietary
treatments for 37 days in 2 trials (8 pigs/trial): DL-Met (0.050% of diet) or L-Met (0.052% of
diet). Body weight and feed intake were measured on days 0, 19, and 37 to calculate
performance measures. Pigs were harvested and carcasses assessed on day 38. Liver, loin
muscle, and subcutaneous fat were collected for antioxidant assessments. Data were analyzed via
Proc Mixed in SAS and significance was set at P ≤ 0.05. There were no differences between
dietary treatments in growth performance, carcass characteristics, or antioxidant status (P >
0.05). In conclusion, methionine form did not differentially impact animal growth or antioxidant
status.