Range or meadow regrowth and weaning effects on 2-year-old cows.

Lamb, J.B.
Adams, D.C.
Klopfenstein, T.J.
Stroup, W.W.
Lardy, G.P.
Rangeland Ecology & Management / Journal of Range Management Archives
Publication Year: 
Eighty 2-year-old spring calving primiparous cows were assigned to 2 weaning and 2 grazing treatments (20 cows/treatment) from 7 September to 7 November in 1991, 1992, and 1993. Grazing treatments were native sandhills range or subirrigated meadow regrowth. Weaning treatments were weaning on 7 September or 7 November. Calves weaned on 7 September grazed subirrigated meadow regrowth after weaning. Crude protein of diets from esophageally fistulated cows averaged 7.6% on range and 12.3% on subirrigated meadow on an organic matter (OM) basis. In vitro organic matter digestibility was 55.1% on range and 61.1% on subirrigated meadow. No year X grazing treatment or weaning X grazing treatment interactions were detected (P > 0.10) for any traits measured. Forage organic matter consumed by cows differed between years: 7.7 kg day-1 in 1991 and 105 kg day-1 in 1992; but was similar (P>0.10) for all grazing and weaning treatments. Cows grazing meadow gained more body weight and body condition than cows grazing range. Dry cows gained more weight and body condition (p
Document Type: 
Journal Issue/Article
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