Growth and reproductive characteristics in heifers fed endophyte-infected tall fescue and oxytetracycline

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Growth and reproductive characteristics in heifers fed endophyte-infected tall fescue and oxytetracycline

Peters, C.W.; Brazle, F.K.; Corah, L.R.
Conference paper
Publication Date: 1993
Conference: Cattlemen's Day, 1993, Kansas State University, Manhattan, KS, March 5, 1993
Starting Page: 59, Ending Page: 61
Publisher: Kansas State University. Agricultural Experiment Station and Cooperative Extension Service

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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%).

Keywords: Beef; Tall fescue; Reproduction; Puberty; Beef heifers; Oxytetracycline

URL for this item: http://hdl.handle.net/2097/6280

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