仁川直轄市 牛結核의 疫學的 硏究

Epizootiological studies on tuberculosis of dairy cattle in inch’on

Intradermal test using the heat concentrated synthetic medium and purified protein derivative tuberculin has been applied for the detection of bovine tuberculosis. The data accumulated during the years of 1984 to 1989 were analysed with epidemiologic factors affecting tuberculin reaction. Incidence of tuberculin reactors in dairy cattle in 1984, 1985, 1986, 1987, 1988 and 1989 were 0.20%, 0.40%, 0.15%, 0.37%, 0.04% and 0.06%, respectively. Distribution of tubercle lesions by the induration size (≥10㎜) were 63.3%. Cattle slaughtered with HCSM tuberculin reactors were 90.2%, whereas PPD tuberculin reactors were 9.8%. Incidence of bovine tuberculosis in dairy cattle in Namku, Namdongku, Soku and Bukku were 40.02%, 39.22%, 7.84%, 3.92%, respectively. Incidence of bovine tuberculosis by 2, 3, 4 and 5 years of age were 41.18%, 23.53%, 9.80% and 11.76%, respectively. Incidence of bovine tuberculosis by the farms reared with 1~5, 6~10, 11~20 and 31~50 cattle herd scales were 12.5%, 18.75%, 31.15% and 12.5%, respectively. Incidence of tubercle lesions in the lungs, pulmonary lymph nodes and mesenteric lymphnode were 18.6%, 27.9% and 29.5%, respectively.