Summary
Replacement beef heifers represent a substantial investment for cattle producers and require appropriate management to achieve puberty, conceive, and calve efficiently. This study evaluated the impact of post-weaning body weight (BW) gain on reproductive development and subsequent productivity in primiparous cows. Sixty Angus crossbred heifers were stratified by age and BW (237 ± 6 d; 226 ± 6 kg) at 28 d post-weaning (d -3) and randomly assigned to one of three supplementation strategies from d 0 to 168: 1) a forage-based diet designed to restrict BW gain (low control; LC), 2) concentrate supplementation to promote accelerated BW gain (high control; HC), or 3) a stair-step regimen consisting of HC for 2 months, followed by LC for 2 months, followed by HC for the final 2 months (SS). Heif
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