Limit feeding, growing cattle, growth performance
The objective of this experiment was to compare performance impacts of a high-energy diet limit-fed at 2.2% of body weight (BW) daily on a dry matter (DM) basis to a traditional roughage-based diet fed for ad libitum intake during the growing phase.
Study Description: Three hundred seventy crossbred heifers (initial BW = 496 ± 44 lb) were used in a receiving and growing study at the Kansas State University Beef Stocker Unit in the spring of 2020. Animals were fed once daily at 7:00 a.m. Bunks were visually observed, and feed refused was estimated. Ad libitum feed refusal was targeted at 20 lb. A pen scale was used to measure weekly pen BW, adjust feed offerings, and to calculate pen performance.
The Bottom Line: Growing heifers limit-fed a high-energy diet at 2.2% of BW daily on a DM basis had 35% better feed efficiency and were more active by 23 minutes per day, on average, than heifers full-fed a traditional roughage-based diet.
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Scilacci, M. A.; Titgemeyer, E. C.; Montgomery, S. P.; Spore, T. J.; Tarpoff, A. J.; O'Quinn, T. G.; Hollenbeck, W. R.; and Blasi, D. A.
"Feed Efficiency is Better and Activity is Greater in Growing Cattle Limit-Fed a High-Energy Diet During the Growing Phase Compared to a Traditional Roughage-Based Diet Fed for Ad Libitum Intake,"
Kansas Agricultural Experiment Station Research Reports: