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Growth curves and nutritional requirements for maintenance of asymptotic weight of Nellore cattle Rev. Ciênc. Agron.
Arruda,Rosana Moreira da Silva de; Souza,Júlio César de; Jardim,Rodrigo José Delgado; Ferraz Filho,Paulo Bahiense; Silva,Luiz Otávio Campos.
ABSTRACT The objective of this study was to evaluate the growth curve of Nellore cattle raised in the Pantanal, Mato Grosso do Sul, in different groups of size (weight), sex, and birth season, as well as to estimate the nutritional requirements for maintenance of the asymptotic weigh. The nonlinear models were adjusted using the Gauss-Newton method, with information on weight and age of animals within each (total, upper, and middle) group. The asymptotic weight was influenced by sex (P<0.05) in all groups. Regarding maturity rates, females in the total herd and upper group were more precocious than males, whereas males and females in the middle group were similar. Animals born in the dry season of the year showed a greater asymptotic weight in the total...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Birth station; Total digestible nutrients; Maturity rate.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400692
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