897
Genetic association between body measurements and weight in Santa Inês sheep

Tuesday, August 19, 2014
Posters (The Westin Bayshore)
Elisa J. Oliveira , Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto - Departamento de Genética (USP/FMRP), Ribeirão Preto-SP, Brazil
Lenira El Faro , SAA/APTA/Instituto de Zootecnia-Centro de Bovinos de Corte, Sertãozinho-SP, Brazil
Anielly P. Freitas , SAA/APTA/Instituto de Zootecnia-Centro de Bovinos de Corte, Sertãozinho-SP, Brazil
Flavia F. Simili , SAA/APTA/Instituto de Zootecnia-Centro de Bovinos de Corte, Sertãozinho-SP, Brazil
Aníbal E. Vercesi Filho , SAA/APTA/Instituto de Zootecnia-Centro de Bovinos de Corte, Sertãozinho-SP, Brazil
Maria Lucia P. Lima , SAA/APTA/Instituto de Zootecnia-Centro de Bovinos de Corte, Sertãozinho-SP, Brazil
Ricardo L.D. Costa , 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 body weight and conformation traits in Santa Inês sheep. A total of 1,272 records from 511 animals born between 1992 and 2013 to 68 rams and 352 ewes, belonging to five herds, were used. The following variables were analyzed: body weight (BW), heart girth (HG), hip height (HH), wither height (WH), rump width (RW), and body length (BL). The variance components were estimated by the REML method in two-trait analysis using an animal model. The model included random direct additive genetic, permanent environmental and residual effects and contemporary group and the linear effect of age of animal as fixed. Heritability estimates were 0.08, 0.25, 0.42, 0.48, 0.32 and 0.24 for BW, HG, HH, WH, RW and BL, respectively. Genetic correlations between weight and body measures were high, ranging from 0.75 to 1.0.

Keywords:

variance components

heritability

genetic correlation

See more of: Posters: Sheep and Goats Breeding (Group 2)
See more of: Species Breeding: Sheep and goats
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