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首页> 外文期刊>Tropical Animal Health and Production >Prevalence of Bovine Viral Diarrhoea Virus antibodies among the industrial dairy cattle herds in suburb of Mashhad-Iran
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Prevalence of Bovine Viral Diarrhoea Virus antibodies among the industrial dairy cattle herds in suburb of Mashhad-Iran

机译：Mashhad-Iran郊区工业奶牛群中牛病毒性腹泻病毒抗体的流行

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摘要

Mashhad is a major dairy production in Iran. The subject of this study was to survey the seroprevalence of Bovine Viral Diarrhea Virus (BVDV) infection using an indirect Enzyme-linked immunosorbent assay (ELISA) test in industrial dairy cattle herds in suburb of Mashhad-Iran. Totally, 141 serum samples were tested. None of the herds had been vaccinated against BVDV. Commercial indirect ELISA kit was used. The herds divided to 3 sizes as cow population. They were included: small, medium and large herds. Data were analyzed using Chi-square test. Ninety-seven (68.79%) cows were ELISA seropositive. However, the true BVDV seroprevalence was 72.25%. All of the herds were antibody positive against BVDV. The prevalence ranged from 66 to 100% within the herds. There were no significant differences between the presence of antibodies to BVDV and the herd size (P > 0.05). The prevalence in animals lower than 2 years old differed significantly with cows higher than 2 years old (P < 0.05). According to the results, it is concluded that it is likely the presence of persistently infection (PI) animal(s) within the herds in suburb of Mashhad-Iran, which is responsible for the presence antibody.
机译：马什哈德（Mashhad）是伊朗的主要乳制品生产地。这项研究的主题是使用间接酶联免疫吸附试验（ELISA）在Mashhad-Iran郊区的工业奶牛群中调查牛病毒性腹泻病毒（BVDV）感染的血清阳性率。总共测试了141个血清样品。没有牛群已经接种了抗BVDV疫苗。使用商业间接ELISA试剂盒。牛群分为3种。其中包括：小型，中型和大型牛群。使用卡方检验分析数据。九十七（68.79％）头母牛的ELISA血清反应阳性。但是，真正的BVDV血清阳性率为72.25％。所有的牛群都对BVDV呈抗体阳性。牛群中的患病率从66％到100％不等。 BVDV抗体的存在与牛群大小之间无显着差异（P> 0.05）。低于2岁的动物的患病率与高于2岁的动物的患病率有显着差异（P <0.05）。根据结果​​，可以得出结论：在Mashhad-Iran郊区的畜群中可能存在持续感染（PI）动物，这是存在抗体的原因。

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