Instituto de Ganadería de Montaña (CSIC-Universidad de León), Grulleros, 24346 León, España - Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León, Campus de Vegazana, 24071 León, España.
Sociedad Cooperativa Limitada Bajo Duero (COBADU), Moraleja del Vino, 49150 Zamora, España.
Parasite. 2021;28:71. doi: 10.1051/parasite/2021068. Epub 2021 Oct 21.
The effects of gastrointestinal nematode infections and anthelmintic treatment on milk yields was compared between flocks with a low level (LL) of eggs per gram (epg) before partum and with a high level (HL). Faecal egg count reduction tests (FECRTs) were carried out before partum comparing a treated group with netobimin with an untreated group. Ewes belonging to LL flocks produced 55.4% more milk than ewes from HL flocks. A negative correlation was found between the mean epg before treatment and the mean milk yield per flock (r = -0.860; p < 0.01). However, treated ewes produced 10.1% more milk than untreated ewes in LL flocks, although in HL flocks, treated ewes produced less milk (-2.7%). The treatment of flocks even with low levels of infection can improve the milk yields. In this study, the epg before partum had a greater influence on total milk yield than the anthelmintic treatment.
比较了分娩前低卵囊每克（epg）水平（LL）和高卵囊每克水平（HL）羊群中胃肠道线虫感染和驱虫治疗对产奶量的影响。在分娩前进行了粪便卵囊计数减少试验（FECRT），比较了 netobimin 治疗组和未治疗组。属于 LL 羊群的母羊比 HL 羊群的母羊多产 55.4%的奶。在治疗前的平均 epg 与每个羊群的平均产奶量之间存在负相关关系（r = -0.860；p < 0.01）。然而，在 LL 羊群中，接受治疗的母羊比未接受治疗的母羊多产 10.1%的奶，尽管在 HL 羊群中，接受治疗的母羊产奶量较少（-2.7%）。即使对低感染水平的羊群进行治疗也可以提高产奶量。在这项研究中，分娩前的 epg 对总产奶量的影响大于驱虫治疗。
