retrospective data from sebele dairy farm were analysed for reproductive performance of friesian/holstein cows. three hundred records from 1989 to 1995 were used. the herd was zero grazed and the data was analysed for age at first calving (afc), calf birth weights (bw), calving interval (ci), days open (do), calving rate (cr), reproductive wastage (rw) and calving difficulty (cd); dystocia, aft...

Bactencins belong to the bovine cathelicidin family of proteins, and their role in body is significant. The study analyzed relationship between polymorphisms within CATHL2 CATHL3 genes encoding Bac-5 Bac-7 proteins. included a herd Polish Holstein-Friesian cows black-and-white breed. Tests were conducted using PCR-RFLP method with introduction ACRS modification. showed that different genetic va...