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首页> 外文期刊>Veterinary World >Serological detection of avian reovirus in different poultry flocks of Gazipur and Mymensingh districts of Bangladesh
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Serological detection of avian reovirus in different poultry flocks of Gazipur and Mymensingh districts of Bangladesh

机译：孟加拉国Gazipur和Mymensingh区不同家禽群中禽呼肠孤病毒的血清学检测

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Background and Aim: Avian reovirus (ARV) is a constraint to poultry industry in Bangladesh as a cause of several diseases in chickens, especially in broiler. However, the actual status of the viral infection is not known because the large-scale study is not conducted in this country. Therefore, this study aimed to check the presence and distribution of ARV-specific antibody in respect to area, types of chickens (broiler breeder, broiler, and layer), vaccination status, and age of chickens in Gazipur and Mymensingh districts of Bangladesh. Materials and Methods: A total of 276 chickens' blood samples were collected from two well-organized broiler breeder stock, seven broiler farms, and five layer farms located at two districts, namely Gazipur and Mymensingh of Bangladesh. Blood samples were collected from wing vein of the apparently healthy chickens using 3 ml of syringe and serum was harvested by keeping the syringe at room temperature in slanting position. The sera were transferred to the laboratory by maintaining the cool chain and further processing was performed by indirect enzyme-linked immunosorbent assay using ARV antibody test kit. Results: The results of serological test revealed that an average of 39.5% seropositive against ARV was recorded in chickens of Gazipur and Mymensingh districts. Among these, chickens of Gazipur district had the highest seropositivity of 50.5% than Mymensingh (30.7%). With respect to vaccination status, the seropositivity of vaccinated chickens in both areas was 100% and non-vaccinated chickens was 50.5% in Gazipur and 30.7% in Mymensingh district, respectively. However, regarding age groups, the seropositivity was higher in the age of 4-6 weeks (64.5%). Conclusion: The present serological findings showed a higher prevalence of ARV-specific antibodies in broiler birds. It indicates that the poultry industries of Bangladesh are contaminated with ARV which may naturally be transmitted to chickens either vertically or horizontally.
机译：背景和目的：禽呼肠孤病毒（ARV）是孟加拉国家禽业的制约因素，是鸡，尤其是肉鸡的几种疾病的诱因。但是，由于该国未进行大规模研究，因此尚不知道病毒感染的实际状况。因此，本研究旨在检查孟加拉国Gazipur和Mymensingh地区相对于面积，鸡的类型（肉种鸡，肉鸡和蛋鸡），疫苗接种状况和鸡龄的ARV特异性抗体的存在和分布。资料与方法：从孟加拉国加吉普尔和迈门辛格两个地区的两个组织良好的肉鸡育种场，七个肉鸡场和五个蛋鸡场收集了总共276只鸡的血样。用3ml注射器从看似健康的鸡的翼静脉中采集血样，并通过将注射器保持在室温下的倾斜位置来收集血清。通过保持冷链将血清转移至实验室，并使用ARV抗体测试试剂盒通过间接酶联免疫吸附法进行进一步处理。结果：血清学测试结果表明，Gazipur和Mymensingh地区的鸡平均有39.5％的血清抗ARV阳性。其中，Gazipur区的鸡血清阳性率为50.5％，高于Mymensingh（30.7％）。就疫苗接种状况而言，Gazipur和Mymensingh地区这两个地区的疫苗接种鸡的血清阳性率为100％，未疫苗接种鸡的血清阳性率分别为50.5％和30.7％。但是，就年龄组而言，在4-6周龄时血清阳性较高（64.5％）。结论：目前的血清学发现表明，肉禽中ARV特异性抗体的患病率较高。这表明孟加拉国的家禽业受到了ARV的污染，ARV可能自然地垂直或水平地传播给鸡。

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