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Kamga-Waladjo Alain Richi Gbati Oubri Bassa Kone Philippe Lapo Rock Allister Chatagnon Gérard Bakou Serge N. Pangui Louis Joseph Diop Papa El Hassane Akakpo Justin Ayayi Tainturier Daniel 《Tropical animal health and production》2010,42(5):953-959
The aim of this study was to determine the seroprevalence of Neospora caninum antibodies and its effects on reproductive parameters in cows in intensive dairy herds in Dakar. Randomised blood samples
were taken for serology from 196 cows in four herds with a history of sporadic abortion. All of the sera were assayed for
antibodies against N. caninum, Candida guillermondii, Coxiella burnetii, and Chlamydophila sp. The associations between serostatus and reproductive parameters (abortion, number of inseminations to conception, and
calving to conception interval) were assessed over a period of 5 years (2004–2008). The seroprevalence of N. caninum antibodies in dairy cattle was 17.9%. The local Gobra breed and crossbreeds had higher levels of N. caninum antibodies than exotic breeds (p < 0.05). For the most recent pregnancies, seropositive cows required more inseminations to establish conception than seronegative
cows (p < 0.05). The results indicate that dairy cattle from Dakar are exposed to N. caninum. Neosporosis should, therefore, be systematically considered as a cause when the calving to conception interval is prolonged. 相似文献
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