王庆华

摘要：羊养殖是我国畜牧养殖产业的重要组成部分，近年养殖规模显著扩大，各类传染性疾病也呈现高发流行态势。体外寄生虫是由多种寄生虫侵染机体引发的一种传染性疾病的总称，该种疾病的发病进程较为缓慢，造成的死亡率相对较低，但是会对养殖管理造成严重的威胁，表现为生长发育不良，死亡率显著下降，机体严重贫血消瘦，还很容易损伤各个脏器器官，影响到脏器功能，生产性能显著下降，甚至会引发不同程度的继发感染、混合感染。该文探讨羊体外寄生虫病的危害和防治措施。

关键词：羊体外寄生虫病;危害;防治措施

中图分类号：S858.26文献标识码：Bdoi：10.3969/j.issn.2096-3637.2021.22.021

The Harm of Ectoparasites in Sheep and Its Control Measures

WANG Qinghua

（Wafangdian Animal Health Supervision Office，Animal Husbandry and Veterinary Bureau of Lingyuan City，Chaoyang Liaoning 122500，China）

Abstract：Sheep breeding is an important part of my country's animal husbandry industry. In recent years，the scale of breeding has expanded significantly，and various infectious diseases have also shown a high prevalence trend. Ectoparasites is a general term for an infectious disease caused by a variety of parasites infecting the body. This disease has a slower onset and relatively low mortality rate，but it poses a serious threat to breeding management. Due to poor growth and development，the mortality rate is significantly reduced，the body is severely anemia and weight loss，and it is easy to damage various organs and organs，affecting organ functions，significantly reducing production performance，and even causing different degrees of secondary infections and mixed infections.This article discusses the harm and control measures of sheep ectoparasitic diseases.

Keywords：sheep ectoparasitic disease，harm，control measures

0引言

随着羊养殖业不断发展，养殖密度增加的同时，各类传染性疾病也呈现高发流行态势，很多传染性疾病表现出复杂的临床症状，给羊健康生长发育构成严重威胁。目前羊体外寄生虫病已经成为威胁畜牧养殖产业健康发展的常见病和高发病，发病过程较长，具有极强传染性，隐蔽性较大，极易造成交叉感染，虽然引发的死亡率相对较低，但是会隐藏在羊的皮毛中，不容易被发现，造成羊群生长发育不良，饲料利用率下降，身体逐渐衰弱，会影响养殖户的经济效益。在疾病防控中，需要饲养人员充分认识到体外寄生虫病造成的危害性，构建针对有效的防控措施，确保在短时间内控制病情。

1疾病危害

羊体外寄生虫病的种类多种多样，但大多数寄生虫主要寄生在羊的体表皮肤或浅体表皮肤组织表面，生长繁殖过程中会造成羊体表皮肤出现不同程度的临床特征，引发大量羊毛脱落。……