Veterinary Research Forum، جلد ۸، شماره ۲، صفحات ۱۰۹-۱۱۴
عنوان فارسی
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عنوان انگلیسی Association of Neospora caninum with reproductive performance in dairy cows: A prospective study from Iran
چکیده انگلیسی مقاله There is no prospective study from Iran to estimate the direct risk of Neospora caninum for pregnancy loss or reproductive factors. In addition, there is no report in the literature concerning the association of N. caninum with dystocia and sex of calves. Therefore, this study was conducted on a group of dairy cows in a large intensive production system during 2011 to 2013 in southern Iran to evaluate the impact of neosporosis on reproductive performance. A total of 253 cows which were diagnosed as pregnant during the first six months of the study were followed until calving or abortion. Reproductive data were collected and N. caninum serostatus was determined using ELISA. To investigate the association of abortion with N. caninum,survival analysis was performed using Cox proportional hazard model. The N. caninum seroprevalence in the study group was 30.40% (95% CI: 27.40, 36.10). The overall abortion rate was 12.25%, significantly higher in seropositive animals (20.80%) than seronegative ones (8.50%). Results of Cox model showed that serostatus of animal for N. caninum and season had significant associations with abortion (p < 0.01). Neospora caninum did not show significant association with other factors such as dystocia and sex of calves. In conclusion, neosporosis is responsible for 12.00% excess abortion risk in infected group and more than 30.00% of abortions could be preventable by control of Neospora in study population. Therefore, control of N. caninum would reduce the economic losses caused by parasite mainly due to pregnancy loss.
کلیدواژه‌های انگلیسی مقاله Abortion, Dairy cow, Iran, Neospora caninum, Reproduction
نویسندگان مقاله مریم انصاری لاری | ansari lari
department of food hygiene and public health, school of veterinary medicine, shiraz university, shiraz, iran
سازمان اصلی تایید شده: دانشگاه شیراز (Shiraz university)

عباس روشن قصرالدشتی | rowshan ghasrodashti
department of internal medicine, school of veterinary medicine, islamic azad university, kazeroon branch, kazeroon, iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)

هادی جسمانی |
department of clinical studies, school of veterinary medicine, shiraz university, shiraz, iran
سازمان اصلی تایید شده: دانشگاه شیراز (Shiraz university)

ملیحه مسعودیان |
department of pathobiology, school of veterinary medicine, shiraz university, shiraz, iran
سازمان اصلی تایید شده: دانشگاه شیراز (Shiraz university)

مهرداد بادکوبه هزاوه |
department of food hygiene and public health, school of veterinary medicine, shiraz university, shiraz, iran
سازمان اصلی تایید شده: دانشگاه شیراز (Shiraz university)

نشانی اینترنتی http://vrf.iranjournals.ir/article_25820_3966064f5921e352562ab57edd131918.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/544/article-544-404001.pdf
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