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canfeng2008

银虫 (正式写手)

[求助] 一小段中文摘要译为英语(放弃求助)

导致鸡大肠杆菌病的大肠杆菌血清型复杂,而商品化的鸡大肠杆菌疫苗与各地流行血清型不符,往往造成免疫失败。实践证明,应用流行毒株制备的疫苗,免疫效果更好。本试验以许昌地区流行的具有致病性的O5,O54和O78 3种优势血清型菌株为制苗菌株,以蜂胶为佐剂,研制了现地多价蜂胶灭活疫苗。经实验室检测和田间试验,免疫过的鸡群能有效抵抗致病性大肠杆菌的攻击,生长状况良好,蛋鸡产蛋率无影响,大肠杆菌病得到控制,其他疾病的发生率也明显降低。

[ Last edited by canfeng2008 on 2013-3-29 at 00:23 ]
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