Article
Selection effect for growth traits on energy requirements in beef Nelore steers.
Tropical animal health and production - 15 Jun 2022
Del Pilar Solar Diaz Iara, Bezerra Luis Antonio Framartino, Lôbo Raysildo Barbosa, de Araújo Neto Francisco Ribeiro, de Camargo Gregório Miguel Ferreira, da Cruz Valdecy Aparecida Rocha, Costa Raphael Bermal, de Oliveira Henrique Nunes
Abstract excerpt
Growth data of 77,372 Nelore steers were used to estimate the selection effect on energy requirements considering two beef production systems: cow-calf and slaughter cycles. All the animals had measures from 120 days to 7 years old. The parameters necessary to evaluate the selection effect on energy requirements were obtained by random regression analysis using Legendre polynomials. The models included additive...
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