陕西省杨凌区柔嫩艾美耳球虫早熟株选育及致病性研究  

Precocious Strain Selection and Pathogenicity Study of Eimeria Tenella in Yangling District of Shaanxi Province

作　　者：张志敏[1] 于三科[1] 林青[1] 翟军军[1] 

机构地区：[1]西北农林科技大学动物科技学院,陕西杨凌712100

出　　处：《家畜生态学报》2005年第1期57-60,共4页Journal of Domestic Animal Ecology

基　　金：西北农林科技大学重点科研基金(08080209)

摘　　要：　采用球虫早熟系虫株选育的方法,反复收集感染后最先排出的卵囊,选育出杨凌地区鸡柔嫩艾美耳球虫早熟株并对早熟株的潜伏期、致病性及繁殖能力进行了研究。结果表明,经18代选育的鸡柔嫩艾美耳球虫杨凌早熟株的潜伏期比母株缩短了24h;早熟株卵囊的形态与母株相似,但没有母株卵囊的大;早熟株的繁殖能力低于母株,每羽鸡所排卵囊总量与剂量呈正相关,而每个卵囊的繁殖能力与剂量呈负相关;早熟株的致病性低于母株。A precocious strain a of Eimeria tenella was selected by repeated passges of oocysts that were early collected from faeces of previously infected chickens.Compared with the parental strain ,the precocious strain had the following characteristics:the peak production of oocysts was 24 hours earlier than parental strain; the precocious strain was smaller than parental strain, but was similar to the paraental in morphology; the pathogenicity and the reproductive capacity of precocious strain was decreased with the comparison with the parental strain.

关 键 词：柔嫩艾美耳球虫 早熟株 选育 致病性 繁殖能力 陕西 杨凌区 鸡 球虫病 免疫预防 疫苗 

分 类 号：S858.31[农业科学—临床兽医学] S852.52[农业科学—兽医学]