Estimation of Genetic and Non-Genetic Parameters of Friesian Cattle under Hot Climate
نویسندگان
چکیده
منابع مشابه
Genetic and non-genetic parameters of replacement rate component traits in Holstein Friesian cattle
Records on 3092 pregnancies distributed over a period of 24 years (1986 to 2010) were used to estimate genetic and non genetic parameters of threshold traits in Holstein Friesian. Parity, season and year of calving were included in the model to estimate their effect on replacement traits. A total of 105 sires' records were used to study the genetic component of the characters. The overall avera...
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in current study, 63 samples of bat populations collected from differ regions were used for evaluating the geographic variations. twenty cranial and dental characters for traditional morphometric and landmarks method on the ventral, dorsal skull and mandible for geometry morphometric studies were used. statistical analyses of traditional morphometric and geometry morphometric data indicated low...
automatic verification of authentication protocols using genetic programming
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15 صفحه اولEstimates of Genetic Parameters for Fertility Traits of Italian Holstein-friesian Cattle
Data from insemination and calving events of Italian Holstein cows and heifers collected from January 1996 until December 2002 were used to estimate phenotypic and genetic parameter for some fertility traits. A validation procedure of the data based on gestation length and information on service sire was used. According to these procedure, in Italy 75.9 % of the calvings are associated to servi...
متن کاملEstimation of genetic parameters for mature weight in Angus cattle.
The aim of this study was to estimate genetic parameters for BW of Angus cattle up to 5 yr of age and to discuss options for including mature weight (MW) in their genetic evaluation. Data were obtained from the American Angus Association. Only records from herds with at least 500 animals and with >10% of animals with BW at ≥ 2 yr of age were considered. Traits were weaning weight (WW, n = 81,52...
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ژورنال
عنوان ژورنال: Journal of Agricultural Science
سال: 2012
ISSN: 1916-9760,1916-9752
DOI: 10.5539/jas.v4n4p95