Abstract

Fall-calving, first-calf heifers (136 head) were fed TDN levels approximating 85% or 100% of NRC recommendations, with or without 200 mg/hd/day lasalocid. Those fed the recommended diet gained more weight from 130 days prepartum to calving and showed more improvement in condition score before calving than those on the low-energy diet. After calving, the group fed the recommended energy level lost less weight and condition and had better reproductive performance than the low-energy group. The only effect of lasalocid was to improve calf performance in the low-energy group.

Keywords: Cattlemen's Day, 1987, Kansas Agricultural Experiment Station contribution, no. 87-309-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 514, Beef, Energy, Lasalocid, Heifers

How to Cite:

Goehring, T., Corah, L. & Higgins, J. J., (1987) “Effects of energy level and lasalocid on productivity of fall-calving, first-calf heifers”, Kansas Agricultural Experiment Station Research Reports 1(1), 50-54. doi: https://doi.org/10.4148/2378-5977.2373