通过预先颈部皮下注射头孢噻呋钠，评价其对1日龄雏鸡试验性诱导大肠杆菌病的预防效果。
The preventive effects of ceftiofur sodium on an experimentally induced colibacillosis in day-old chicks were evaluated by single subcutaneous injection prior to the inoculation of e.
急性毒性试验表明所制备的灭活苗接种1日龄雏鸡24天后未发现鸡群有异常表现，所制备疫苗是安全的。
That acute toxicity tests showed that the chicken group normally until 24 days old by inoculated the inactivated oil-emulsion vaccines at 1-day-old, indicated the vaccine is safe.
结果表明，21日龄雏鸡感染1 000个和5 000个孢子化卵囊未见异常表现，肠道未发现肉眼可见的病理变化。
Recults showed that 21-day-old male Luoman chickens inoculated with 1 000 and 5 000 sporulated oocysts of Emitis appeared normal 6 days PI and no lesions were observed in the intestines.
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