Genotype × Environment Interactions in Horn Fly (Diptera:Muscidae) Resistance in Angus, Brahman, and F1 Reciprocal Crossbred Cows on Common Bermudagrass or Endophyte-Infected Tail Fescue1

Autor: W.G. Jackson, C. D. Steelman, Zelpha B. Johnson, M. A. Brown, W.R. Getz, G. Tolley
Rok vydání: 1993
Předmět:
Zdroj: The Professional Animal Scientist. 9:178-182
ISSN: 1080-7446
Popis: Weekly horn fly (Diptera:Muscidae) counts were recorded on 125 Angus, Brahman, and F1 reciprocal crossbred heifers grazing endophyte-infected tall fescue or common bermudagrass during the fly seasons in 1990 and 1991. Direct heterosis, maternal breed, and direct breed effects for average fly infestation were estimated as linear contrasts among sire breed × dam breed least squares means in these heifers. Heterosis differed between forages (P
Databáze: OpenAIRE