身体状况得分和体重是预产母羊中胃肠道线虫的有效向选择性治疗指标
Eiry G Williams1, Peter M Brophy1, Hefin W Williams1
1Department of Life Science, Aberystwyth University, Aberystwyth, UK.
The Veterinary record
|December 2, 2025
概括
使用身体状况得分 (BCS) 和体重的有针对性的选择性治疗 (TST) 可以减少雌羊的虫杀虫剂使用,而不会影响生殖性能. 这种方法有助于管理胃肠道线虫感染,并支持群体利能力.
科学领域:
- 兽医寄生虫学 兽医寄生虫学
- 羊的繁殖 羊的繁殖
- 它具有对虫的抵抗力.
背景情况:
- 胃肠道线虫 (GIN) 感染会对绵羊的生殖性能和羊群利能力产生负面影响.
- 常规的交配前除虫是常见的,但抗虫药物耐药性需要减少药物使用.
研究的目的:
- 评估针对性选择性治疗 (TST) 指标,用于交配前羊群管理.
- 确定BCS和体重是否可以在不影响生殖结果的情况下指导杀虫剂的使用.
主要方法:
- 对354只被分为抗虫治疗和对照组的母羊进行了回顾性研究.
- 分析交配前的身体状况得分 (BCS) 和体重作为TST指标.
- 用于分析生殖表现的康威-马克斯韦尔-皮森和二项式回归模型.
主要成果:
- 在接受治疗和未接受治疗的母羊之间,总体扫描后的子大小没有显著差异.
- 没有除虫治疗的BCS<3或体重<60公斤的母羊的子大小明显低于接受治疗的母羊或处于更好的状态/更重的母羊.
- 较高的BCS和体重与更好的生殖结果有关,不管是否接受了除草剂治疗.
结论:
- 身体状况得分 (BCS) 和体重是实施TST预交配的有效指标.
- 通过TST策略,可以在保持或改善生殖能力的同时减少虫杀虫剂的使用.
- 这种方法提供了一种可持续的方法来管理绵羊群中的GIN感染.
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