四川、西藏部分地区牦牛场球虫感染情况调查

doi:10.16431/j.cnki.1671-7236.2024.05.031

摘要/Abstract

摘要： 【目的】调查四川省和西藏自治区部分地区牦牛球虫感染情况,为该地区牦牛球虫病的预防、控制提供理论参考。【方法】从四川省和西藏自治区部分地区8个牦牛场采集2~6、7~12和＞12月龄牦牛的新鲜粪样共376份,采用饱和盐水漂浮法对粪便样品中球虫卵囊进行定性检查,采用麦克马斯特计数法统计球虫阳性粪样中每克粪便中的球虫卵囊数(OPG),了解不同牦牛场、不同月龄牦牛的球虫感染情况。【结果】8个牦牛场均检测出球虫感染,阳性样品共85份,平均感染率为22.6%(85/376),平均OPG为1 643。共检出9种艾美耳属球虫,优势虫种为阿拉巴艾美耳球虫,感染率为37.6%(32/85),多呈混合感染。平均感染率最高的是2~6月龄牦牛,感染率为37.9%(11/29);其次是7~12月龄牦牛,感染率为31%(57/184);＞12月龄牦牛的球虫感染率为10.4%(17/163)。【结论】四川和西藏部分地区牦牛场均存在不同程度的球虫感染,均以混合感染为主。牦牛球虫感染率、感染强度以及优势虫种在不同地区、不同年龄牦牛之间存在差异。

关键词: 四川; 西藏; 牦牛; 球虫; 流行病学

Abstract: 【Objective】 The purpose of this experiment was to investigate the coccidial infection of yak in some areas of Sichuan and Tibet,and provide theoretical reference for the prevention and control of yak coccidiosis in this area.【Method】 A total of 376 fecal samples of yaks aged 2 to 6,7 to 12 and over 12 months were collected from 8 yak farms in some areas of Sichuan and Tibet.Qualitative examination of coccidium oocysts in fecal samples was carried out by saturated saline flotation method.The oocyst per gram (OPG) in coccidioid positive fecal samples was counted by MacMaster’s method,and to understand the coccidial infection of yaks in different farms and at different ages.【Result】 A total of 85 positive samples were detected in 8 yak farms,with an average infection rate of 22.6% (85/376) and an average OPG of 1 643.A total of 9 Eimeria species were detected,the dominant species was Eimeria alabamensis,and the infection rate was 37.6% (32/85),most of which were mixed infections.The average infection rate was the highest in yaks aged 2 to 6 months (37.9% (11/29)).The infection rate was 31% (57/184) in yaks aged 7 to 12 months.The infection rate of coccidia in yaks over 12 months was 10.4% (17/163).【Conclusion】 There were different degrees of coccidial infection in yaks in some areas of Sichuan and Tibet,and the mixed infection was the main infection.The infection rate,infection intensity and dominant species of coccidia in yaks were different in different regions and at different ages.

Key words: Sichuan; Tibet; yak; coccidia; epidemiology

中图分类号:

S852.72^＋3

李燕, 唐智慧, 符立发, 黄家艳, 吴丹, 曹随忠, 王保宁. 四川、西藏部分地区牦牛场球虫感染情况调查[J]. 中国畜牧兽医, 2024, 51(5): 2101-2109.

LI Yan, TANG Zhihui, FU Lifa, HUANG Jiayan, WU Dan, CAO Suizhong, WANG Baoning. Epidemiological Investigation of Coccidial Infection in Yak Farms in Some Areas of Sichuan and Tibet[J]. China Animal Husbandry and Veterinary Medicine, 2024, 51(5): 2101-2109.

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