Data/hora: 06/06/2024 07:36:40

Biblioteca(s): | Embrapa Gado de Corte; Embrapa Pecuária Sudeste.
Data corrente: | 25/02/2013
Data da última atualização: | 25/02/2013
Autoria: | BUZANSKAS, M. E.; SAVEGNAGO, R. P.; GROSSI, D. A.; VENTURINI, G. C.; QUEIROZ, S. A.; SILVA, L. O. C. da; TORRES JUNIOR, R. A. de A.; MUNARI, D. P.; ALENCAR, M. M. de.
Afiliação: | M. E. Buzanskas, Departamento de Ciencias Exatas, Faculdade de Ciencias Agrarias e Veterinarias (FCAV), Universidade Estadual Paulista (UNESP); R. P. Savegnago, Departamento de Ciencias Exatas, Faculdade de Ciencias Agrarias e Veterinarias (FCAV), Universidade Estadual Paulista (UNESP); D. A. Grossi, Centre for Genetic Improvement of Livestock, University of Guelph, Guelph, ON N1G 2W1, Canada.; G. C. Venturini, ADepartamento de Ciencias Exatas, Faculdade de Ciencias Agrarias e Veterinarias (FCAV), Universidade Estadual Paulista (UNESP); S. A. Queiroz, Departamento de Zootecnia, Faculdade de Ciencias Agrarias e Veterinarias (FCAV), Universidade Estadual Paulista (UNESP); LUIZ OTAVIO CAMPOS DA SILVA, CNPGC; ROBERTO AUGUSTO DE A TORRES JUNIOR, CNPGC; D. P. Munari, Departamento de Ciencias Exatas, Faculdade de Ciencias Agrarias e Veterinarias (FCAV), Universidade Estadual Paulista (UNESP); MAURICIO MELLO DE ALENCAR, CPPSE.
Título: | Genetic parameter estimates and principal component analysis of breeding values of reproduction and growth traits in female Canchim cattle.
Ano de publicação: | 2012
Fonte/Imprenta: | Reproduction, Fertility and Development, 7 p. Aug. 2012.
Idioma: | Inglês
Notas: | http://dx.doi.org/10.1071/RD12132.
Conteúdo: | Phenotypic data from female Canchim beef cattle were used to obtain estimates of genetic parameters for reproduction and growth traits using a linear animal mixed model. In addition, relationships among animal estimated breeding values (EBVs) for these traits were explored using principal component analysis. The traits studied in female Canchim cattle were age at first calving (AFC), age at second calving (ASC), calving interval (CI), and bodyweight at 420 days of age (BW420). The heritability estimates for AFC, ASC, CI and BW 420 were 0.03+ - 0.01,0.07 +- 0.01,0.06 +- 0.02, and 0.24 +- 0.02, respectively. The genetic correlations for AFC with ASC, AFC with CI, AFC with BW420, ASC with CI, ASC with BW420, and CI with BW420 were 0.87 +- 0.07, 0.23 +- 0.02, - 0.15 +- 0.01, 0.67 +- 0.13, -0.07 +- 0.13, and 0.02 +- 0.14, respectively. Standardised EBVs for AFC, ASC and CI exhibited a high association with the first principal component, whereas the standardised EBV for BW420 was closely associated with the second principal component. The heritability estimates for AFC, ASC and CI suggest that these traits would respond slowly to selection. However, selection response could be enhanced by constructing selection indices based on the principal components.
Palavras-Chave: | Age at first calving; Bodyweight; Canchim.
Thesagro: | Bovino; Melhoramento Genético Animal.
Thesaurus Nal: | calving interval; selection index.

Categoria do assunto:

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L Ciência Animal e Produtos de Origem Animal

Registro original: | Embrapa Gado de Corte (CNPGC)

Exemplares:

CNPGC - (15194-1) - UPC - AP - DD -  -  -  - DIS
CPPSE - (21902-1) - UPA - AP - DD - PROCI-2013.00050 - BUZ - 2013.00050 - DIS