Breeding goals and economic values for Nellore cattle in a full-cycle production system

Heverton Luis Moreira; Rodrigo Pelicioni Savegnago; Luara Afonso Freitas; Raysildo Barbosa Lôbo; Luiz Antônio Framartino Bezerra; Claudia Cristina Paro de Paz

doi:10.4025/actascianimsci.v41i1.43361

Heverton Luis Moreira Universidade de São Paulo
Rodrigo Pelicioni Savegnago Instituto de Zootecnia
Luara Afonso Freitas Universidade de São Paulo
Raysildo Barbosa Lôbo Universidade de São Paulo / Associação Nacional de Criadores e Pesquisadores
Luiz Antônio Framartino Bezerra Universidade de São Paulo
Claudia Cristina Paro de Paz Instituto de Zootecnia / Universidade de São Paulo

DOI: https://doi.org/10.4025/actascianimsci.v41i1.43361

Resumo

The objective of this study was to develop a bio-economic model for the estimation of economic values of economically important traits in a full-cycle beef cattle production system. The bio-economic model calculated economic values by simulating the impact of changes in the profit of the system consisting of a 1% increase in each trait of the breeding objective, while the other traits were kept constant. The bio-economic model was effective in estimating the sources of revenues and expenses of the production system. The estimated economic values were, in the order of importance for the full-cycle system, R$ 3.69 for male slaughter weight, R$ 3.63 for male weaning weight, R$ 3.58 for weaning rate, R$ 3.40 for female slaughter weight, R$ 2.30 for female weaning weight, and R$ 0.13 for mature cow weight. The results showed that all traits evaluated in the full-cycle system had positive economic impact, indicating that selection would increase profitability maximizing the expected response for the traits of the breeding goal.

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