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| RIBEIRO, V. M. P.; MERLO, F. A.; GOUVEIA, G. C.; WINKELSTROTER, L. K.; ABREU, L. R. A.; SILVA, M. V. G. B.; PANETTO, J. C. do C.; PAIVA, L. de C.; CEMBRANELLI, M. de A. R.; TORAL, F. L. B.. |
| The objective of this work was to determine whether the random regression model using linear splines (RRMLS) is suitable to estimate the genetic parameters for productive and reproductive traits of a multiple-breed dairy cattle population, as well as to investigate the effect of the genetic group of the progeny on the genetic merit of the sire. The multiple-trait model (MTM) and the RRMLS with one knot fitted for every genetic group were used to obtain the genetic parameters. Records of 1/2 Holstein + 1/2 Gyr (1/2HG), 5/8 Holstein + 3/8 Gyr (5/8HG), and 3/4 Holstein + 1/4 Gyr (3/4HG) crossbreed dams were considered. The RRMLS showed better fitting. The additive and residual variances estimated by the MTM and the RRMLS were similar. Heritability varied from... |
| Tipo: Separatas |
Palavras-chave: Raça Gir.; Gir (cattle breed).. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1083465 |
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