中国畜牧兽医 ›› 2013, Vol. 40 ›› Issue (8): 173-175.

• 疾病防治 • 上一篇    下一篇

布氏艾美耳球虫保定株的鉴定及致病性研究

刘丽丹1, 廖贵城1, 王文莉1, 吴松明1, 陈海明1, 谭志坚1, 翁亚彪2   

  1. 1. 佛山市正典生物技术有限公司, 广东佛山 528138;
    2. 华南农业大学兽医学院, 广东广州 510642
  • 收稿日期:2013-01-28 出版日期:2013-08-20 发布日期:2013-08-16
  • 通讯作者: 翁亚彪 E-mail:ybweng@qq.com
  • 作者简介:刘丽丹(1982- ),女,广东人,硕士,主要从事兽医寄生虫研究。
  • 基金资助:

    鸡球虫病药敏虫株七价活疫苗的研制及其应用研究(2011C01)。

Study on Indentification and Pathogenicity of Baoding Strain of Eimeria brunetti

LIU Li-dan1, LIAO Gui-cheng1, WANG Wen-li1, WU Song-ming1, CHEN Hai-ming1, TAN Zhi-jian1, WENG Ya-biao2   

  1. 1. Foshan Standard Biotech Co., Ltd., Foshan 528138, China;
    2. College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
  • Received:2013-01-28 Online:2013-08-20 Published:2013-08-16

摘要: 本研究采用琼脂薄膜球虫单卵囊分离技术,从河北省保定市暴发球虫病的某鸡场鸡粪便中成功分离出布氏艾美耳球虫卵囊。生物学特性研究结果表明,该虫种潜隐期为125 h,卵囊大小为26.1 μm×21.3 μm,形状指数为1.22,寄生与病变部位主要在小肠后段、直肠和泄殖腔,特征性病变是肠黏膜层有出血斑纹及血性内容物。感染一定剂量该球虫,鸡的生产性能受到影响,当感染剂量为2×105个/羽时会出现鸡死亡,表明该虫株具有较强致病性;应用特异PCR方法对获得的卵囊进行分子鉴定,结果确认所分离和纯化的球虫卵囊为布氏艾美耳球虫纯种,并将该虫株命名为布氏艾美耳球虫保定株——BBD株。

关键词: 布氏艾美耳球虫; 生物学特性; 鉴定; 致病性

Abstract: In this study, the oocysts of E.brunetti were isolated from chicken faeces in Baoding city, Hebei province by single-oocyst isolation technique. The results of biological characteristics indicated that the minimum prepatent period was 125 h for the E.brunetti strain, with an average size of 26.1 μm×21.3 μm, and a shape index of 1.22. This parasite could cause hemorrhage of intestinal mucosa in rectum, cloaca, and the posterior part of small intestine. Infected with certain dose of this parasite, the performance trait of chickens were affected severe, and 2×105 per chicken oocysts could cause chickens to die, which indicated that the parasite had a relatively strong pathogenicity. The oocysts were further identified using specific PCR assays, and the results illustrated that the samples collected from single oocyst separation were mono-specific species of E.brunetti, which was named as BBD strain.

Key words: Eimeria brunetti; biological characteristics; identification; pathogenicity

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