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Kansas Agricultural Experiment Station Research Reports
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
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Effects Of Energy Level And Lasalocid On Productivity Of Fall-Calving, First-Calf Heifers, T. Goehring, L. Corah, James J. Higgins
Effects Of Energy Level And Lasalocid On Productivity Of Fall-Calving, First-Calf Heifers, T. Goehring, L. Corah, James J. Higgins
Kansas Agricultural Experiment Station Research Reports
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.