AN EPIDEMIOLOGICAL STUDY OF BLUE TONGUE IN ANHUI PROVINCE
Zhou Weihan(Veterinary Servicc of Anhui Province)
Blue tongue had reported by 3 counties in Anhui Province,1987～1991,and was recognized by isolation of BTV. The morbidity of sheep was 33. 0%,and the mortality was 11.3%. The serological survey of the domestic ruminants shows:the positive rate of epidemic region was higher than non-epidemic region,of local cattle,buffalo and sheep were higher than goat and dairy cattle,of Merino sheep was higher than Corriedale and Romney sheep,of grazing hards were higher than shelter feeding herds,but no difference in ages. There are 12 species of Culicoides were found in Anhui,the dominant mammal feeding midges arc C. oxystoma,C.homotomus and C.nipponensis. C.homotomus may be the vector of BT in this region,Local catte and buffale may be the overwintering host of BTV.
【CateGory Index】： S858.265.3