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AbstractFull Text

This study was carried out to investigate variance components, direct, maternal genetic parameters, estimated breeding values and factors affecting pre-weaning growth criteria of Romney sheep. Data were collected over the period from 2006 to 2012 with records of 4989 lambs descended from 76 rams...

Author(s)
Faid-Allah, E.; Ghoneim, E.; Ibrahim, A. H. M.
Publisher
Pusat Penelitian dan Pengembangan Peternakan, Bogor, Indonesia
Citation
Jurnal Ilmu Ternak dan Veteriner, 2016, 21, 2, pp 73-82
AbstractFull Text

Reaction Norm (RN) is the study of genotype-environment interaction (G × E) that complies with alternative ways of genotypes within different environments. This study was carried out to verify G × E by a reaction norm model of weights at 120 (W120) and 210 (W210) days of age in Nellore cattle...

Author(s)
Ferreira, J. L.; Lopes, F. B.; Lira, T. S. de; Garcia, J. A. S.; Lôbo, R. B.; Sainz, R. D.
Publisher
Universidade Estadual de Londrina, Londrina, Brazil
Citation
Semina: Ciências Agrárias (Londrina), 2015, 36, 4, pp 2787-2797
Abstract

Three different models including or not the direct and maternal non-additive effects and the fixed effects of contemporary group, parity order, direct and maternal heterosis and the direct and maternal additive genetic random effects were compared for predicting breeding values of pre-weaning daily ...

Author(s)
Bocchi, A. L.; Oliveira, H. N. de; Ferraz, J. B. S.; Eler, J. P.
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2008, 37, 7, pp 1207-1215
Abstract

The aim of this study was to investigate the influence of the covariance between maternal and direct effects on the estimates of genetic parameters and on the predictions of breeding values for days to gain 160 kg in the preweaning period (D160). The analysis were carried out using the MTDFREML...

Author(s)
Malhado, C. H. M.; Lôbo, R. N. B.; Martins Filho, R.; Facó, O.; Azevedo, D. M. M. R.
Publisher
Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
Citation
Brazilian Journal of Veterinary Research and Animal Science, 2004, 41, 1, pp 14-19
Abstract

The aim of this study was to evaluate selection criteria in Gyr [Gir] cattle based on the traits such as average daily gain from birth to weaning (ADG) and number of days to gain 160 kg from birth to weaning (D160). Data from the Brazilian Association of Zebu Breeders of 16 592 calves, 507 sires,...

Author(s)
Muniz, C. A. S. D.; Queiroz, S. A.; Carvalheiro, R.; Fries, L. A.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 2, 2002, pp 0-4
Abstract

The genetic parameters in growth traits in beef cattle and milk yield and fat percentage in dairy cattle were estimated utilizing the farming system research and extension approach to collect pedigree and management information. The results of the long-term study showed higher additive individual...

Author(s)
Sornthep, T.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 25, 2002, pp 1-4

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