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首页> 外文会议>ACIAR Proceedings no.117; Workshop on Control of Newcastle Disease and Duck Plague in Village Poultry; 20030818-20; Ho Chi Minh City(VN) >Newcastle disease in backyard chickens in Dong Thap province
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Newcastle disease in backyard chickens in Dong Thap province

机译：同塔省后院鸡新城疫

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摘要

In an investigation of the impact of Newcastle disease on flocks of backyard chickens, 7000 farmers were surveyed in Dong Thap Province. The chicken population in the survey was more than 230 000 birds. Of these 24.8% developed a disease suggestive of Newcastle disease, with a case mortality rate of almost 90%. Chickens of all ages were affected, with a higher morbidity in younger birds. Of 208 serum samples from unvaccinated chickens, 19% contained haemagglutination inhibition antibodies specific for Newcastle disease virus. During one outbreak with 90% mortality, virus isolation by egg inoculation was attempted from 147 samples of brain. Thirty-eight of the samples (25.9%) yielded agents that killed chicken embryos and that agglutinated chicken red blood cells. All but one were identified as isolates of Newcastle disease virus. These viruses killed embryos quickly and were probably velogenic.
机译：在调查新城疫对后院鸡群的影响时，在同塔省调查了7000名农民。调查中的鸡只总数超过23万只。在这些人中，有24.8％的人患有提示新城疫的疾病，病死率几乎达到90％。所有年龄段的鸡都受到影响，幼鸟的发病率更高。在未接种疫苗的鸡的208个血清样本中，有19％含有对新城疫病毒具有特异性的血凝抑制抗体。在一次具有90％死亡率的暴发中，尝试从147个脑样本中通过卵接种分离病毒。 38个样品（占25.9％）产生的试剂杀死了鸡的胚胎，并使鸡的红细胞凝集。除一个外，其他所有病毒均被鉴定为新城疫病毒的分离株。这些病毒很快杀死了胚胎，并可能导致了成胎。

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