Abstract
Heifers developed on high-endophyte, tall fescue gained half as much weight (56 vs 117 lb; P<.01) and had a lower 35-day pregnancy rate (15 vs 58%; P<.01) compared to heifers fed low endophyte, tall fescue. Based on progesterone serum concentrations and visual determination of estrus, the proportion of heifers that had attained puberty by the start of the breeding season tended (P=.11) to be greater when fed oxytetracycline (55 vs 68%).
Highlights
Tall fescue is excellent in terms of yield and persistence; growth and reproductive performance by animals grazing tall fescue have generally been inferior to those of animals grazing other cool-season grasses
Heifers developed on high-endophyte, tall fescue gained half as much weight (56 vs 117 lb; P
Summary Heifers developed on high-endophyte, tall fescue gained half as much weight (56 vs 117 lb; P
Summary
Recommended Citation Peters, C.W.; Brazle, F.K.; and Corah, L.R. (1993) "Growth and reproductive characteristics in heifers fed endophyte-infected tall fescue and oxytetracycline," Kansas Agricultural Experiment Station Research Reports: Vol 0: Iss. 1.
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