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Genetic parameters for rank of Dairy Gir cattle in agricultural shows using Thurstonian procedures

Tuesday, August 19, 2014
Posters (The Westin Bayshore)
Manuela P.M. Gama , Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto - Departamento de Genética (USP/FMRP), Ribeirão Preto-SP, Brazil
Francisco R. Araújo Neto , Instituto Federal de Goiás, Rio Verde-GO, Brazil
Henrique N. de Oliveira , Sao Paulo State University (UNESP), Jaboticabal, Brazil
André R. Fernandes , Associação Brasileira de Criadores de Gir Leiteiro, Uberaba-MG, Brazil
Anibal E. Vercesi Filho , SAA/APTA/Instituto de Zootecnia-Centro de Bovinos de Corte, Sertãozinho-SP, Brazil
Lenira El Faro , SAA/APTA/Instituto de Zootecnia-Centro de Bovinos de Corte, Sertãozinho-SP, Brazil
Claudia C. P. Paz , Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto - Departamento de Genética (USP/FMRP), Ribeirão Preto-SP, Brazil
Abstract Text: The objective of this study was to estimate genetic parameters for rank of Dairy Gir cattle using Thurstonian procedures, in order to provide data that contribute to the selection and consequent genetic improvement of the breed in Brazil. Data were provided by the Brazilian Association of Dairy Gir Breeders (ABCGIL) and consisted of 9,587 rank records obtained from 4,915 females participating in agricultural shows that occurred from 2008 to 2013. In order to include the level of difficulty in the model, different weights were attributed to the shows. The heritability estimate for rank was 0.21 and the repeatability was 0.63. 

Keywords:

dairy cattle

heritability

repeatability

zebu cattle

See more of: Posters: Dairy Cattle Breeding (Group 2)
See more of: Species Breeding: Dairy cattle
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