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shi ji zhong sheng bu huan ji wen xin fa
Pages: 45
Year: Issue:  1
Journal: Reclaiming and Rice Cultivation

Keyword:  鸡瘟注射针头江西省新方法终生疫苗零点鸡蛋新城针眼;
Abstract: <正> 据报道:江西省研究出一种可使鸡终生不患鸡瘟的新方法。具体是:当种蛋孵化到八至十六日时,用极细的人用注射针头在鸡蛋的尖顶处,细心刺破一个针眼大小的洞口,再将稀释一百倍的新城Ⅰ系疫苗,缓慢注入零点一毫升(约二
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