Objective: This study was conducted to evaluate the ability of supplemental methionine to improve health, inflammation status, and performance of receiving cattle.
Study Description: A group of 384 crossbred heifers (initial weight 489 lb) of Tennessee origin were used in a 45-day receiving trial with limit-feeding to evaluate the effects of supplemental methionine (Smartamine M; Adisseo, Alpharetta, GA) on health, inflammation, and performance. Cattle received either 0 (control) or 10 grams/day Smartamine M, a ruminally protected methionine product. Plasma haptoglobin levels measured on days 0, 14, and 45 were used as a biomarker of inflammation.
Results: No differences in average daily gain (P ≥ 0.52) or gain-to-feed ratio (P ≥ 0.28) were observed for this trial. For plasma haptoglobin (Figure 1), interaction between dietary treatment and linear effect of day was observed (P = 0.05).
The Bottom Line: Supplemental methionine supplied by Smartamine M does not improve performance but reduces inflammation and possibly improves immune function in receiving heifers.
View full research report by authors M.S. Grant, H.F. Speer, W.R. Hollenbeck, R.N. Wahl, N.D. Luchini,1 D.A. Blasi, and E.C. Titgemeyer at https://newprairiepress.org/kaesrr/vol6/iss2/8/
