青海省海东市藏羊肝片吸虫病调研报告

Investigation Report on Fascioliasis of Tibetan Sheep in Haidong City,Qinghai Province

藏羊肝片吸虫病是由肝片吸虫寄生在藏羊的肝脏、胆管中引发的一种体内寄生虫疾病,会对羊的健康构成严重威胁。肝片吸虫病是青海藏羊放牧养殖地区发生流行率相对较高的一类体内寄生虫疾病,养殖方式不同,放牧形式不同,藏羊的感染率存在一定差异性,在有些养殖场中肝片吸虫病的感染率有时高达100%。为进一步掌握青海省海东市藏羊肝片吸虫病的流行现状,于2020年3—5月,利用到基层农牧民中开展流行病学调查的有利契机,按照随机抽查原则,对不同放牧方式不同养殖方式的羊进行肝片吸虫病流行病学调查。调查结果显示不同放牧方式下肝片吸虫病的发生流行率存在一定差异性,低洼地带、河滩地带放牧阳性率相高,阳坡或者干燥地区放牧的感染率相对较低。舍饲养殖模式下,由于羊接触病源的几率减少,发生流行率相对较低,放牧养殖的感染率最高。

Fasciola hepatica in Tibetan sheep is an internal parasitic disease caused by Fasciola hepatica in the liver and bile duct of Tibetan sheep,which poses a serious threat to the healthy production of sheep.Fasciola hepatica is a type of internal parasitic disease with a relatively high prevalence in Qinghai Tibetan sheep grazing and breeding areas.The breeding methods and grazing methods are different.There are certain differences in the infection rate of Tibetan sheep.In some farms,liver slices The infection rate of trematodiasis is sometimes as high as 100%.In order to further grasp the prevalence of Fasciola hepatica in Tibetan sheep in Haidong City,from March to May of 2020,the favorable opportunity of conducting epidemiological investigations among grassroots farmers and herdsmen was used to conduct random inspections on different An epidemiological survey of Fasciola hepatica was carried out in flocks with different grazing methods.The survey results show that the prevalence of Fasciola hepatica under different grazing methods is different.The positive rate of grazing in low-lying areas and river beaches is relatively high,and the infection rate of grazing in sunny slopes or dry areas is relatively low.Under the house-fed breeding model,because the probability of sheep contact with the source of the disease is greatly reduced,the prevalence rate is relatively low,and the infection rate of grazing is the highest.