Postweaning performance of calves from Angus, Brahman, and reciprocal-cross cows grazing endophyte-infected tall fescue or common bermudagrass
| Autor: | W. A. Phillips, A.H. Brown, M.A. Brown, J R Miesner, W.G. Jackson, Samuel W. Coleman |
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| Rok vydání: | 1999 |
| Předmět: |
Male
Veterinary medicine Genotype Marbled meat Brahman Forage Weaning Poaceae Animal science Hybrid Vigor Genetics Animals Animal Husbandry Crosses Genetic biology food and beverages General Medicine biology.organism_classification Animal Feed Breed Feedlot Cattle Female Animal Science and Zoology Mitosporic Fungi Festuca arundinacea Purebred Food Science |
| Zdroj: | Journal of Animal Science. 77:25 |
| ISSN: | 0021-8812 |
| Popis: | Data from 403 Polled Hereford-sired calves from Angus, Brahman, and reciprocal-cross cows were used to evaluate the effects of preweaning forage environment on postweaning performance. Calves were spring-born in 1991 to 1994 and managed on either endophyte-infected tall fescue (E+) or common bermudagrass (BG) during the preweaning phase. After weaning, calves were shipped to the Grazinglands Research Laboratory, El Reno, OK and stratified to one of two winter stocker treatments by breed and preweaning forage; stocker treatments were winter wheat pasture (WW) or native range plus supplemental CP (NR). Each stocker treatment was terminated in March, calves grazed cool-season grasses, and calves were then moved to a feedlot phase in June. In the feedlot phase, calves were fed to approximately 10 mm fat over the 12th rib and averaged approximately 115 d on feed. When finished, calves were weighed and shipped to Amarillo, TX for slaughter. Averaged over calf breed group, calves from E+ gained faster during the stocker phase (P |
| Databáze: | OpenAIRE |
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