Genetic parameters for test day somatic cell score in Brazilian Holstein cattle
نویسندگان
چکیده
منابع مشابه
Genetic parameters for test day somatic cell score in Brazilian Holstein cattle.
Selection for lower somatic cell count has been included in the breeding objectives of several countries in order to increase resistance to mastitis. Genetic parameters of somatic cell scores (SCS) were estimated from the first lactation test day records of Brazilian Holstein cows using random-regression models with Legendre polynomials (LP) of the order 3-5. Data consisted of 87,711 TD produce...
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متن کاملestimation of genetic parameters and genetic trends of somatic cell score in iranian holstein cows using test-day records
the aim of the present study was to estimate the genetic parameters and genetic trends of somatic cell score (scs) in the first 3 lactations of iranian holstein cows by random regression (rr) animal model by using restricted maximum likelihood (reml) method. the data set used in this analysis included observations of 340318 test-day records of 41526 cows in 288 herds; 89969 test-day of 11750 co...
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the objective of this research was to estimate the genetic parameters and trend of somatic cell count in holstein cows of iran using test day records. the phenotypic the used data consisted of were consisting of 407167 first lactation test day records the which were collected by the center of animal breeding and livestock production improvement center of iran during 2009 to 2013. somatic cell c...
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ژورنال
عنوان ژورنال: Genetics and Molecular Research
سال: 2015
ISSN: 1676-5680
DOI: 10.4238/2015.december.29.21