Test-day model for milk yield of dairy buffaloes in colombia
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
01/07/2011
|
Resumo |
The test-day model is the preferred method for genetic evaluations in dairy cattle. For this study, 28372 test-day records of 1220 lactations from 1997 to 2009 were used. The (co)variance components for milk in test-day were estimated using a Uni and multiple-traits repeated animal model with the Restricted Maximum Likelihood method (REML). The Contemporary Group (herd, year, and season of parity) and the age of parity (linear and quadratic) fixed effects, and the additive genetic, permanent environmental, and residual random effects were included in the model. The heritabilities ranged between 0.06 and 0.45 during lactation. The genetic correlations were greater than 0.93. In conclusion, the test-day model is appropriate for the genetic evaluation of dairy buffaloes in Colombia. |
Identificador |
http://www.lrrd.org/lrrd23/7/hurt23149.htm Livestock Research for Rural Development, v. 23, n. 7, 2011. 0121-3784 http://hdl.handle.net/11449/72550 2-s2.0-79960025459 2-s2.0-79960025459.pdf |
Idioma(s) |
eng |
Relação |
Livestock Research for Rural Development |
Direitos |
openAccess |
Palavras-Chave | #Buffalo #Genetic correlation #Milk yield #Test-day model #Animalia #Bos #Bubalus |
Tipo |
info:eu-repo/semantics/article |