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Provedor de dados:  Ciência Rural
País:  Brazil
Título:  Adaptability and phenotypic stability for productive and reproductive traits in Nelore cattle
Autores:  Silveira,Mauricio Vargas da
Souza,Julio Cesar de
Ferraz Filho,Paulo Bahiense
Silva,Luiz Otavio Campos da
Arruda,Rosana Moreira da Silva
Machado,Carlos Henrique Cavallari
Pereira,Mariana Alencar
Data:  2019-01-01
Ano:  2019
Palavras-chave:  Genotype-environment interaction
Resumo:  ABSTRACT: The present study aimed to estimate adaptability and stability parameters for Nellore bulls in 3 different regions. The traits analyzed included the weight of the animals raised in pasture at 420 days of age (W420) and at the age at first calving (AFC). The information used in this study was related to the phenotypic mean of the females which were the offspring of the top ten classified bulls based in one region. We used the methods proposed by Finlay & Wilkinson (1963) & Eberhart and Russell (1966) in order to evaluate the parameters of adaptability and stability of these animals. The averages estimated by the method of least squares were 243.91±34.90 kg and 1182.54±57.82 days, respectively, for the traits W420 and AFC. Adaptability and stability parameters for the W420 characteristic showed that it is feasible to identify bulls with predictable behavior in different environments, and that these animals may generate progenies which may achieve above-average performance. Behavior of the 10 bulls analyzed in the different regions studied for the traits W420 and AFC showed that the herds and the regions influenced the performance of their progenies. The methods used allowed us to identify bulls with general adaptability, high stability, and better performances, which may be the most suitable to be used in herds in which the genetic merit of the cows and the environment where the progenies will be raised are both unknown.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Universidade Federal de Santa Maria
Relação:  10.1590/0103-8478cr20180327
Formato:  text/html
Fonte:  Ciência Rural v.49 n.3 2019
Direitos:  info:eu-repo/semantics/openAccess

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