Genetic evaluation for persistency of lactation in Holstein cows using a random regression model
نویسندگان
چکیده
منابع مشابه
estimation of genetic parameters of production traits and persistency of iranian holstein cows by random regression
abstract (co) variance components of milk, fat and protein yield of 11368 first lactation iranian holstein dairy cow were estimated by single trait random regression test-day models and restricted maximum likelihood (reml) method. in this study the homogeneous residual variance was assumed throughout lactation. estimated heritability for 305-day production traits ranged from 0.25 to...
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in this investigation 13699 data related to milk production from 2716 holstein first calving and daughter from 167 sire cows were analyzed based on random regression model (rr/cf) and reml method incomplete lactating (5-90 days) and (5-120 days) in correlations to complete lactating were 0.67 and 0.72, respectively with progress in complete 5-240 day was 0.91 the correlation value for lactating...
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ژورنال
عنوان ژورنال: Genetics and Molecular Biology
سال: 2007
ISSN: 1415-4757
DOI: 10.1590/s1415-47572007000300009