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This study was carried out on the records of 698 Polish Holstein-Friesian cows, residing in 2 free-stall farms. The relationship between somatic cell counts in milk (SCC) and fertility was tested using records from the first 7 test-days (≈ months) after calving. The analysed fertility traits were the number of AI services per confirmed pregnancy and calving to conception interval. The SCC pattern...
The aim of the study was to analyse the dependence between P35Q and K468R polymorphism in the butyrophilin gene (BTN1A1) and somatic in milk in cattle. The experiment was conducted on a population of 214 jersey cows. Genotypes of the animals were determined using PCR-RFLP. The following allele sequences were found: P35Q – 085 (A) and 0.15 (C); K468R – 0.66 (A) and 0.34 (G). The association analysis...
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