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河南省部分地区乳牛隐孢子虫病的流行病学调查
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卢庆斌1，仇书兴1，茹宝瑞2，刘伟3，王淑梅3，苗霆3，王岩1，
段张秀1，宁长申1，张龙现1*
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（1.河南农业大学 牧医工程学院，河南 郑州450002；2.河南省奶牛繁育中心，河南 郑州450003；
3.河南省畜牧局，河南 郑州450003）
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摘要：
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为进一步掌握乳牛隐孢子虫病在河南省的流行动态，从河南省郑州、开封、济源和鹤壁4个地区9个奶牛场采集12月龄以内的乳牛粪便样品582份,用饱和蔗糖溶液漂浮法和改良抗酸染色法进行检测。结果显示，隐孢子虫总感染率为26.12%(152/582)。其中，断乳前犊牛（5日龄至2月龄）隐孢子虫感染率为30.91%（51/165），断乳后犊牛（3～12月龄）感染率为24.22%(101/417)。依据形态数值初步鉴定为2种隐孢子虫，即微小隐孢子虫和安氏隐孢子虫。微小隐孢子虫在断乳前犊牛阳性样品中的比率为50.98%(26/51)，在断乳后乳牛阳性样品中的比率为9.90%(10/101)。另外，饲养方式(断乳前犊牛单独隔离饲养和未隔离饲养)对断乳前犊牛2种隐孢子虫的感染率有显著影响。 |
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关键词：
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犊牛；隐孢子虫；感染率；河南 |
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中图分类号：S 852.723 文献标识码：
A 文章编号：1673-4696(2008)03-0261-07 |
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Epidemiological investigation of cryptosporidiosis in dairy calves in
some prefectures of Henan Province |
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LU Qing-bin1,QIU Shu-xing1,RU
Bao-rui2,LIU Wei3,WANG Shu-mei3,MIAO Ting3,WANG
Yan1,
DUAN Zhang-xiu1,NING Chang-shen1,ZHANG Long-xian1 |
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(1.College of Animal Science and Veterinary Medicine,Henan Agricultural University,Zhengzhou 450002,China;
2.Henan Dairy Cattle Reproduction and Breeding Center,Zhengzhou 450003,China;
3.Henan Husbandry Bureau,Zhengzhou 450003,China) |
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Abstract: To further understand the prevalence of cryptosporidiosis in dairy calves in Henan Province,582 fecal samples were collected from calves of less than 12-month-old on nine dairy farms in Zhengzhou,Kaifeng,Jiyuan and Hebi prefectures,and the samples were examined by the Sheater’s sugar flotation technique and the modified acid-fast staining method.The overall infection rate was 26.12%(152/582) and the infection rate was 30.91%(51/165) in pre-weaning(5 days-old to 2 months-old) calves,and 24.22%(101/417) in post-weaning(3 to 12 months-old)calves,respectively.The parasites were identified to represent Cryptosporidium parvum and C.andersoni preliminarily.The proportion of C.parvum was 50.98% in the pre-weaning calves,but only 9.90% in the post-weaning calves.Moreover,raising manners,including pre-weaning isolation raising and pre-weaning non-isolation raising, had significant influence on infection rates of the two Cryptosporidium species. |
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Key words: calf;Cryptosporidium;infection rate;Henan |
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