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用 10 0 0个柔嫩艾美耳球虫 (E .tenella)早熟株孢子化卵囊 ,10 0 0个毒害艾美耳球虫 (E .neca trix)早熟株孢子化卵囊和 5 0 0个巨型艾美耳球虫 (E .maxima)早熟株卵囊分别接种 1,7和 2 5日龄雏鸡 ,接种后 14天分别用相应的 2 0 0 ,2 0 0和 10 0个亲本毒株孢子化卵囊进行攻虫。初次接种和攻虫后分别检查卵囊总产量。结果表明 ,3种早熟虫株的卵囊都能够成功的感染 1日龄和 7日龄雏鸡。初次接种后雏鸡都产生了不同程度的球虫免疫力。本研究证实 ,艾美耳球虫早熟株卵囊能够诱导初生和幼龄雏鸡产生球虫免疫力
The sporulated oocysts of 10 0 E. Tenella precocious strains, the sporulated oocysts of 10 0 precocious strains of E. Neca trix and 500 The oocysts of precocious E. maxima strains were inoculated with 1, 7 and 25 day-old chickens respectively. The 14 days after inoculation were treated with the corresponding 200, 200 and 10 parental spores Oocysts attack the worm. Oocyst production was checked after initial inoculation and after the worm attack. The results showed that the oocysts of three precocious worm strains were able to successfully infect 1-day-old and 7-day-old chicks. After the first vaccination chicks have produced varying degrees of coccidiosis immunity. This study demonstrates that Eimeria precocious oocysts can induce coccidiosis in primary and young chickens