Sengupta P P, Balumahendiran M, Raghavendra A G, Honnappa T G, Gajendragad M R, Prabhudas K
Project Directorate on Animal Disease Monitoring and Surveillance, Hebbal, Bangalore, 560024, Karnataka, India.
Trop Anim Health Prod. 2013 Jan;45(1):205-10. doi: 10.1007/s11250-012-0192-3. Epub 2012 May 30.
A seroprevalence study of bovine neosporosis was conducted among 1,927 dairy cattle and 341 water buffaloes from Karnataka and Andhra Pradesh states in plateau of southern peninsular India by employing competitive enzyme-linked immunosorbent assay. Overall, 12.61 and 9.97 % sera samples were found positive for the presence of Neospora caninum antibody, respectively, among cattle and water buffaloes. Out of 1,927 sera samples from cattle, 912 and 1,015 samples were collected from unorganized and organized herds, respectively. The cattle screened were of upgraded Holstein-Friesian and water buffaloes were of graded Surti breed. Significantly (p < 0.05) higher prevalence was found in the cattle in unorganized herds (16.66 %) in comparison to organized herds (8.96 %). The highest seroprevalence was recorded in the age group of 4 years and above in both type of cattle herds and water buffaloes. There was a significant variation of seroprevalence (p < 0.05) observed between different age groups of cattle. The rate of seroprevalence increased with the increment in the age of the animals suggesting a possibility of horizontal mode of transmission of the infection from the environment. The percentage of abortion history was more in seropositive group (51.65 %) in comparison to the seronegative group (5.84 %) and the seropositive cattle were 8.84 times more likely to experience abortion than the seronegative cattle. The occurrence of abortion among different age groups varied significantly (p < 0.05). The findings revealed the presence of neosporosis in the southern peninsular India among cattle and water buffaloes and a strong association between the seroprevalence and abortion.
通过采用竞争酶联免疫吸附测定法，对印度半岛南部高原卡纳塔克邦和安得拉邦的1927头奶牛和341头水牛进行了牛新孢子虫病血清流行率研究。总体而言，牛和水牛中分别有12.61%和9.97%的血清样本检测出犬新孢子虫抗体呈阳性。在1927份牛血清样本中，分别从无组织和有组织的牛群中采集了912份和1015份样本。所筛查的牛为改良的荷斯坦 - 弗里生品种，水牛为改良的苏尔蒂品种。与有组织的牛群（8.96%）相比，无组织牛群中的牛新孢子虫病患病率显著更高（p < 0.05）（16.66%）。在两种牛群和水牛中，4岁及以上年龄组的血清流行率最高。不同年龄组的牛之间血清流行率存在显著差异（p < 0.05）。血清流行率随着动物年龄的增加而上升，这表明感染可能通过环境进行水平传播。血清阳性组的流产史百分比（51.65%）高于血清阴性组（5.84%），血清阳性的牛发生流产的可能性是血清阴性牛的8.84倍。不同年龄组的流产发生率差异显著（p < 0.05）。研究结果表明印度半岛南部的牛和水牛中存在新孢子虫病，且血清流行率与流产之间存在密切关联。
