Title
Estimation of genetic parameters to determine the birth and weaning weight in brahman bovines
Document Type
Article
Publication Date
1-1-2008
Publication Title
Revista MVZ Cordoba
Abstract
Objective: To estimate the heritability and genetic environmental and phenotypic correlations of birth and weaning weight in Brahman bovines. Materials and methods. 612 values for birth weight (BW) and weaning weight (WW) were analyzed for Brahman Bovines born form 1996 to 2003. The data derived from "Pradera" and "Mundo Nuevo" farms in Sucre department (Colombia). Data were analyzed using the mixed SAS V 8.0 system. The proposed mathematical model included the fixed effects: year, time, sex, number of calves, and farm and suggested the random effect of bull for both characteristics. Results. It was found that the effects farm and bull were statistically significant for the (BW). For WW, the year was statistically significant (p≤0.05); sex, number of calves and bull effects were highly significant (p≤0.05) and time and farm effects were not significant (p≥0.05). The estimated heritability was 0.16 and 0.37 for BW and WW, respectively. Genetic, phenotypic and environmental correlation values were -0.2, 0.14 and 0.26 respectively. Conclusions. Values found for heritability indicate that the phenotype is not a good indicator of genotype, and that it is necessary to use tests of progeny or pedigree for selection. The value of the genetic correlations allows the affirmation that calves with better birth weight will not be those that reach higher weights at weaning.
Volume
13
Issue
1
First Page
1184
Last Page
1191
ISSN
01220268
Recommended Citation
Montes V., Donicer; Vergara G., Oscar; Prieto M., Esperanza; and Rodríguez P., Andrés, "Estimation of genetic parameters to determine the birth and weaning weight in brahman bovines" (2008). Scopus Unisalle. 698.
https://ciencia.lasalle.edu.co/scopus_unisalle/698
Identifier
SCOPUS_ID:70349551990