CAJ | 학술논문

本试验对选育的柔嫩艾美耳球虫早熟株的免疫效果进行实验室评价。将早熟株分别用2×102个／只，2×103个／只，2×104个／只，2×105个／只的剂量免疫实验动物，免疫2周后，再用亲本株按2×105个／只的致死剂量攻毒，实验结果显示，早熟株致病性较弱且有一定的免疫保护力。
본시험대선육적유눈애미이구충조숙주적면역효과진행실험실평개。장조숙주분별용2×102개／지，2×103개／지，2×104개／지，2×105개／지적제량면역실험동물，면역2주후，재용친본주안2×105개／지적치사제량공독，실험결과현시，조숙주치병성교약차유일정적면역보호력。
The study was conducted to evaluate in laboratory the immune effects of an isolated precocious Eimeria tenella strain.The chicken were allocated to 5 groups: 4 groups were infected with E.tenella, 1 group was infected without E.tenella as a control.The infection dosages for the 4 infected groups were 2×102,2×103,2×104,2×105ooeysts per chick,respectively.2 weeks after infection,all chicken ere challenged with 2×l0Sthe parental strain oocysts per ehick,a lethal dosage.The result showed the precocious strain had less pathogenicity, and higher immunogenicity.