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Early diagnosis of pregnancy in cattle is an important factor determining the profitability of breeding. It can shorten the intercalving period by accelerating the next insemination procedure or diagnosing the cause of infertility. Palpation of the reproductive system per rectum is a method used for more than 100 years. It involves palpation of the uterine horns to detect the fetal vesicle, fetus...
A study was undertaken to analyse the effect of polymorphism of α-lactalbumin (ALA) gene at position -1689 on the susceptibility of lymphocytes to the infection with bovine leukaemia virus (BLV) and to undergoing apoptosis during the first three months after calving. The experiments covered 97 Black-and-White breed cows, aged 3-8 years, from three herds. The infection with BLV was diagnosed on the...
The study was performed on 60 Holstein-Friesian cows and 41 heifers. The results on the comparison of the efficacy of an ELISA and fluorescent antibody test (FAT) in the diagnosis of bovine leukosis, indicated that the FAT technique enables the identification of a greater number of bovine leukaemia virus (BLV) carriers than the ELISA, thus suggesting that the FAT may be more useful than the ELISA...
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