tailieunhanh - Báo cáo khoa học: " Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway"

Tuyển tập các báo cáo nghiên cứu về bệnh thú y được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành thú y đề tài: Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway. | Acta vet. scand. 2001 42 331-338. Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway By 5. Stuen1 and K. Bergstrom2 Norwegian School of Veterinary Science Department of Sheep and Goat Research Sandnes Norway and 2National Veterinary Institute Department of Bacteriology Uppsala Sweden. Stuen S Bergstrom K Serological investigation of granulocytic Ehrlichia infection in sheep in Norway. Acta vet. scand. 2001 42 331-338. - Serum samples of 749 sheep from 75 sheep flocks in Norway . 361 lambs 6 to 7 months old and 388 adults year were analysed for antibodies to Ehrlichia equi. Ten animals from each flock were examined. Seropositive animals were found along the coast of southern Norway from Vestfold to Sor-Trondelag as far north as 63 38 N . Seropositive sheep were not found in southeast east or northern Norway. Thirty-two flocks were seropositive although tick-borne fever had only been diagnosed earlier in half of these. In 78 of the seropositive flocks more than 80 of the sheep were seropositive. A total of and of lambs and adults were found seropositive respectively. However the overall seroprevalence among animals that had been grazing on Ixodes pastures were for the lambs and for the adults. Mean antibody titres SD log10 in seropositive lambs and adults were and respectively. No significant differences in either seroprevalence or mean antibody titre between sheep of different ages were obtained in this study. Based on antibodies 94 of sheep flocks on Ixodes pastures were infected with a granulocytic Ehrlichia infection. The association between seropositive flocks and Ixodes infested pasture shows a very high degree of agreement p . The present study indicates that granulocytic Ehrlichia infection in sheep is underdiagnosed in Norway. Ehrlichia phagocytophila antibodies lambs seroprevalence. Introduction The most common tick-borne disease in domestic animals in Norway is .