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Genotype by environment interaction for 450-day weight of Nelore cattle analyzed by reaction norm models Genet. Mol. Biol.
Pégolo,Newton T.; Oliveira,Henrique N.; Albuquerque,Lúcia G.; Bezerra,Luiz Antonio F.; Lôbo,Raysildo B..
Genotype by environment interactions (GEI) have attracted increasing attention in tropical breeding programs because of the variety of production systems involved. In this work, we assessed GEI in 450-day adjusted weight (W450) Nelore cattle from 366 Brazilian herds by comparing traditional univariate single-environment model analysis (UM) and random regression first order reaction norm models for six environmental variables: standard deviations of herd-year (RRMw) and herd-year-season-management (RRMw-m) groups for mean W450, standard deviations of herd-year (RRMg) and herd-year-season-management (RRMg-m) groups adjusted for 365-450 days weight gain (G450) averages, and two iterative algorithms using herd-year-season-management group solution estimates...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth; Genotype by environment interaction; Plasticity; Random regression; Robustness.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200013
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