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抗猪产肠毒素大肠埃希氏菌卵黄抗体的研制及攻毒治疗试验

DOI: 10.3321/j.issn:1000-7091.2002.04.024, PP. 108-112

Keywords: 仔猪腹泻,产肠毒素大肠埃希氏菌,卵黄抗体

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Abstract:

利用产肠毒素大肠埃希氏菌(ETEC)标准菌株K88,K99,987P制备灭活苗,免疫待开产母鸡,应用琼脂扩散试验检测母鸡血清抗体和卵黄抗体(IgY)效价,在琼扩效价≥1∶64时收集卵黄,卵黄经氯仿去脂、硫酸胺沉淀后提纯出卵黄抗体,将提纯卵黄抗体对攻毒仔猪口服治疗,结果显示治疗仔猪腹泻状况明显减轻,与对照组相比有显著差异;治疗组未出现死亡而对照组仔猪有33%~67%的死亡率.试验结果表明,研制的IgY对ETEC所致的仔猪腹泻具有明显的效果.

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