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Milk Production In First-Lactation Beef Heifers, D. M. Marshall

South Dakota Beef Report, 1991

Milk production was estimated by weigh-suckle-weigh procedures at six dates during the first lactation of 250 first-calf beef heifers representing several crossbred types. The effect of dam breed group on milk yield was significant for each measurement date. The effect of calf sex on milk intake was significant or at least approached significance for the three earliest measurement dates but was nonsignificant for the last three dates. Compared to milk production at an average of 51 days, production at 79 days was similar, while production estimated at later stages of lactation declined. Estimated milk production during later lactation was less …