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- W2227887589 abstract "The effect of calf weaning age on cow and calf performance and feed utilization was investigated over 2 yr. Multiparous, crossbred, lactating beef cows (n=156) with summer-born calves were blocked by prebreeding BW, stratified by calf age, and assigned randomly to 1 of 4 treatments within strata. The experiment was a randomized complete block design with a 2×2 factorial arrangement of treatments with 3 replications (pens) per treatment per year (total n=24). Factors were (1) location—Agricultural Research and Development Center (ARDC) or Panhandle Research and Extension Center (PHREC)—and (2) calf weaning age—early weaned (EW) at 91±18 d of age or conventionally weaned (CW) at 203±16 d of age. All cows and calves were fed a common diet from early to conventional weaning time within each year and location. Cows with weaned calves were limit fed (6.9 kg of DM/cow daily), and EW calves were offered ad libitum access to feed (4.0 kg of DM/calf per day). Nursing pairs were fed an equivalent amount of DM (10.8 kg/ pair per day). Initial cow BW and BCS were similar (P≥0.26), but BW change from early to conventional weaning was 17 kg greater (P≤0.01) for EW cows. Cow BCS and conception rates were not affected (P≥0.38) by weaning. Calf BW at conventional weaning was greater (P≥0.05) for CW than EW at ARDC but greater (P≥0.05) for EW than CW calves at PHREC. Calf ADG per unit of total feed energy intake was greater (P≥0.05) for nursing pairs at ARDC but not different between EW and CW at PHREC, indicating early weaning may have minimal effect on reducing feed energy requirements." @default.
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- W2227887589 date "2015-10-01" @default.
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- W2227887589 title "The effect of calf age at weaning on cow and calf performance and feed utilization by cow-calf pairs11A contribution of the University of Nebraska Agricultural Research Division, supported in part by funds provided through the Hatch Act and the Dr. Kenneth and Caroline McDonald Eng Foundation." @default.
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- W2227887589 doi "https://doi.org/10.15232/pas.2015-01393" @default.
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