DIAGNOSIS OF PERSISTENT BVD IN ONE DAY OLD AND OLDER THAN 30 DAYS CALVES WITH RAPID KIT TESTS

Bovine Viral Diarrhoea (BVD) is an important disease of cattle which causes alimentary, respiratory and reproductive disorders and serious economic losses. Today, eradication of disease is compulsory for the increase of dairies and achieving more healthier herds. In cattle, if the calves are infected with BVD from the uterus in the first trimester of pregnancy, they are born persistent infected (PI) antigen(+). The PI calves are smaller or normal in apperance than normal calves. Persistent infected (PI) calves spread the virus throughout their lives and infect their surroundings. BVD causes early embrionic death, calves born with anomalies and immunosuppression in infected animals. In this study 200 calves between 1–30 days old from Burdur province are screened with BVD rapid test kit. In the screening, 13 calves (6.5%) are found BVDV ag(+). The gender of PI calves are found 4% female (8/200) and 2.5% male (5/200). In the 5% of PI calves (10/200), respiratory and alimentary problems were clinically seen. The antigen(+) animals are put out of the herd and vaccination protocols are recommended. In this study, diagnosing the disease can be made rapidly by both clinicians and farmers, also putting the virus spreading persistent calves out of herd without losing time and a successful struggle can be made against BVD, are shown.