804
Estimates of genetic parameters for economic traits in dairy buffalo

Tuesday, August 19, 2014
Posters (The Westin Bayshore)
Camila da costa Barros , Universidade Estadual Paulista “Júlio de Mesquista Filho” (FCAV-UNESP), Jaboticabal, Brazil
Daniele Portela de Oliveira , Departamento de Zootecnia, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista “Júlio de Mesquista Filho” (UNESP), Jaboticabal, Brazil
Naudin A Hurtado Lugo , Universidade Estadual Paulista “Júlio de Mesquista Filho” (FCAV-UNESP), Jaboticabal, Brazil
Rusbel R Aspilcueta Borquis , State University of São Paulo, Faculty of Agriculture and Veterinary Sciences, Jaboticabal, Brazil
Humberto Tonhati , State University of São Paulo, Faculty of Agriculture and Veterinary Sciences, Jaboticabal, Brazil
Abstract Text:

This study aims to verify the existence of genetic variation in economic traits of dairy buffalo in Brazil. Variance components were estimated by restricted maximum likelihood method. Heritability estimates for milk yield (MY); fat, protein, lactose and total solids percentages; somatic cell count, lactation length and calving interval were 0.31, 0.28, 0.38, 0.23, 0.36, 0.20, 0.08 and 0.19, respectively. Genetic correlations between MY and the other traits were -0.26, -0.25, 0.11, -0.21, -0.14, 0.78 and -0.09, respectively. The results show that most traits, except for lactation length, display enough additive genetic variability to respond to a breeding program. Furthermore, applying simultaneous selection for MY may result in undesirable impact on milk constituents. 

Keywords:

buffaloes

genetic correlation

heritability

See more of: Posters: Dairy Cattle Breeding (Group 1)
See more of: Species Breeding: Dairy cattle
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