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Histopathological and molecular study of Neospora caninum infection in bovine aborted fetuses

Asian Pacific Journal of Tropical Biomedicine 2014年第12期4卷 990-994页

作者： Amir Kamali Hesam Adin Seifi Ahmad reza Movassaghi gholam reza razmi Zahra Naseri Department of Clinical Sciences Faculty of Veterinary MedicineFerdowsi University of Mashhad Center of Excellence in Ruminant Abortion and Neonatal Mortality Ferdowsi University of Mashhad Department of Pathobiology Faculty of Veterinary MedicineFerdowsi University of Mashhad

Objective:To estimate the extent to which abortion in dairy cows was associated with of Neospom caninum(***) and to determine the risk factors of neosporosis in dairy farms from 9 provinces in ***:Polymerase chain reaction(PCR) test was used to detect Neospora infection in the brain of 395 bovine aborted fetuses from 9 provinces of *** addition,the brains of aborted fetuses were taken for histopathological *** identify the risk factors associated with neosporosis,data analysis was performed by ***:*** was detected in 179(45%) out of 395 fetal brain samples of bovine aborted fetuses using *** the PCR-positive brain samples,only 56 samples were suited for histopathological *** characteristic lesions of Neospora infection including non-suppurative encephalitis were found in 16(28%) of PCR-positive *** risk factors including season,parity of dam,history of bovine virus diarrhea and infectious bovine rhinotracheitis infection in herd,cow's milk production,herd size and fetal appearance did not show association with the *** study showed that Neospora caused abortion was significantly more in the second trimester of pregnancy than other *** addition,a significant association was observed between Neospora infection and ***:The results showed *** infection was detected in high percentage of aborted *** addition,at least one fourth of abortions caused by Neospora *** results indicate increasing number of abortions associated with the protozoa more than reported before in Iran.

关键词： Neospora caninum Dairy herds Abortion PCR Histopathology Risk factors

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