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unknown
内蒙古科尔沁草原绵羊不同虫龄土耳其斯坦东毕吸虫及虫卵孵化的实验观察
Authors
吕尚民
吕洪昌
+3 more
唐崇惕
崔贵文
钱玉春
Publication date
31 December 1990
Publisher
Abstract
作者在内蒙科尔沁草原实验观察了绵羊体内62日龄及三年龄的土耳其斯坦东毕吸虫雌雄虫。三年龄虫体变小,大多数雄虫的睾丸内质呈不同程度空泡伏,部分雌虫的卵巢和卵黄腺萎缩或消失,体形变异。实验羊粪便的虫卵孵化率逐年下降,粪便散入水中后连续4—5天有毛蚴孵出,毛蚴数最多的是在次日上午,随后每天上午有一递减的小高峰,下午极少、夜间消失
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Last time updated on 16/06/2016