ESTIMATION OF HERITABILITY OF CALVING INTERVAL IN CROSSBRED CATTLE
Journal Title: Revista MVZ Cordoba - Year 2008, Vol 13, Issue 1
Abstract
Objetive. To estimate the heritability of interval calving in crossbred cattle. Materials and methods. Information from database of La Leyenda farm, in the municipality of Caucasia (Antioquia) was used. A single-trait animal model was used, that included genetic group, year of birth, season of birth and the number of calvings as fixed effects and the additive direct genetic, permanent environmental and residual as random effects. Results. The heritability estimated was 0.15 ± 0.07 and the phenotypic mean was 544 ± 97 days. Conclusions. The heritability for the interval between calvings was low, indicating that little genetic progress can be achieved by selecting for this characteristic.
Authors and Affiliations
Oscar Vergara G, M. Sc *| Universidad de Antioquia, Grupo de Genética y Mejoramiento Animal. Medellín, Colombia.Universidad de Córdoba, Facultad de Medicina Veterinaria y Zootecnia. Departamento de Ciencias Pecuarias. Montería, Colombia.Correspondencia: overgara@sinu.unicordoba.edu.co, Mario Cerón M, Ph. D| Universidad de Antioquia, Grupo de Genética y Mejoramiento Animal. Medellín, Colombia., Naudin Hurtado L, M. Sc| Universidad de Antioquia, Grupo de Genética y Mejoramiento Animal. Medellín, Colombia.Faculdade ciências agrárias e veterinárias, Instituto de Pesquisas Meteorológicas UNESP, São Paulo Brasil., Elkin Arboleda Z, M. Sc| Universidad de Antioquia, Grupo de Genética y Mejoramiento Animal. Medellín, Colombia., Juan Granada P, Zoot| Universidad de Antioquia, Grupo de Genética y Mejoramiento Animal. Medellín, Colombia., Clara Rúa B, Zoot| Universidad de Antioquia, Grupo de Genética y Mejoramiento Animal. Medellín, Colombia.
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