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Comparison of calving course of Charolaise purebreds and their crossbreeds with Polish Holstein-Frisian cows. Calving course of cows of Charolaise breed covered by bulls of the same breed as well as cows of Polish Holstein Friesian breed inseminated with Charolaise bull’s semen was investigated. In purebred population the material was taken from the beef cattle recording scheme provided by the Polish...
The aim of study was the comparison of fattening results of Polish Holstein- Friesian (PHF) and PHF × Belgian Blue crossbreds (PHF × BB) bulls fattened in intensive system up to age of 18 months. Fattening results of 50 bulls in each genotype group were analyzed. Bulls were kept in freestall system at seven private farms located in Central Poland and up to about 60 days of life fed with milk replacement,...
Calving course of 100 cows of Limousine breed covered by bulls of the same breed as well as 100 cows of Polish Holstein-Friesian breed inseminated with Limousine bull's semen was investigated. In purebred population the material was taken from the beef cattle recording scheme provided by the Polish Association of Beef Cattle Breeders and Producers. In case of commercial crossing the material was taken...
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