用此感染性虫卵悬液通过泄殖腔和口腔接种感染4周龄的火鸡、未培育的新鲜虫卵和异刺线虫雌虫感染火鸡、以及来自三个地方的蚯蚓感染火鸡相对比。

The 4-week-old turkeys were infect by the suspension of infectious eggs through the cloaca and oral infection, contrast to oral infection with the Heterakis fresh egg, female Heterakis and earthworms.

youdao