Abstract
ABSTRACT Winter supplementation level economics in a forage-based calf backgrounding system were analyzed by combining 6 studies. In each study, British-breed calves were backgrounded on corn residue with high (HI) or low (LO) winter supplementation level treatments, grazed through the summer, and finished. Within study, cattle were assigned randomly to treatment with identical implant procedures and finishing diets. Feedlot performance values were adjusted to an equal fat thickness. During winter backgrounding, HI gained 0.35 kg/d (P 0.19) during finishing, but HI had 0.08 kg greater ADG (P = 0.06) and 35 kg greater final BW (P
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