An Epidemiological Study of Hypoderma Infection and Control Using Ivermectin in Yaks in Qinghai Province, China

Journal of Veterinary Medical Science

Kai FENG³  Zhihong GUO³  Fuqiang HUANG³  Yong FU³  Tetsuo NASU²  Zhisheng DANG³  Hong DUO³  Wei LI³  Peng MAO³  Fang WANG²  Xiuying SHEN³  Nariaki NONAKA¹ 

[1] Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 1�?1 Gakuen-Kibanadai-Nishi, Miyazaki 889�?2192, Japan;Laboratory of Veterinary Anatomy, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1�?1 Gakuen-Kibanadai-Nishi, Miyazaki 889�?2192, Japan;Academy of Animal and Veterinary Medicine, University of Qinghai, No. 1, Weier road, Sci-biological Industry Areas, Xining, Qinghai, The People of Republic of China

关键词: China;    Hypoderma;    ivermectin;    Qinghai;    yak;   

DOI  :  10.1292/jvms.13-0299

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(24)Cited-By(2)The prevalence of Hypoderma spp. in yaks grazed in the east of Qinghai province was investigated in 2008. In this area, the prevalence in young yaks (1- to 3-year-old) was very high at 82.2�?98.7%, whilst in adult yaks (4-year-old and older), the prevalence was 42.4�?50.6%. The seasonal development and migration pattern of Hypoderma larvae in yak bodies was found to be similar for different locations in this area. The numbers of first, second and third instar larvae detected in yak bodies peaked in October, December and March, respectively. Different doses of ivermectin (125 to 500 µg/kg body weight) almost completely dewormed the larvae from yaks, suggesting that using a quarter of the prescribed dose (500 µg/kg body weight) was effective. In October of each year between 2009 and 2012, ivermectin (125 µg/kg body weight) was administered to a total of 562,995 yaks grazed in four counties in Qinghai province, and the pevalence of Hypoderma larval infection in yaks was reduced to 0.5�?1.0%.

【 授权许可】

Unknown