Pellets enriched with healthy hay and quebracho are not sufficient to control gastrointestinal nematodes in meat sheep commercial flocks.

IF 2.1 3区 医学 Q2 PARASITOLOGY Parasitology Pub Date : 2024-10-01 Epub Date: 2024-11-15 DOI:10.1017/S0031182024001409
Léa Bordes, Corentin Souchon, Alice Claessens, Sophie Lavigne, Geneviève Bouix, Margaux Goyenetche, Laurence Sagot, Christelle Grisez, Guy-Gérard Merlande, Philippe Jacquiet
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Abstract

The emergence of AH multiresistant GIN compromises sustainability of grassland sheep farming worldwide. Plants rich in condensed tannins are an alternative method of parasitism management that is currently being explored. Feed supplementation trials with pellets rich in sainfoin (Onobrychis viciifolia) and quebracho (Schinopsis spp.) were carried out. Three meat sheep farms in western France took part in the study and a total of 4 trials were carried out.During these 21-day trials, the ewes were returned to the sheepfold and half of them received a balanced ration supplemented with 70 g day−1 of healthy hay and quebracho pellets, while the other half received the same ration supplemented with 70 g day−1 of lucerne pellets. Fecal egg counts (FEC) were carried out at the start and end of each trial, and nematode species were identified by real-time PCR after larval culture. At D0, FEC were similar in both groups for all 4 trials. Proportions of species infecting the ewes varied from 1 trial to another: Haemonchus contortus was predominant in summer and Trichostrongylus colubriformis in winter. At D21, there were no significant differences in FEC between groups. Helminthofauna were not significantly different between groups, except for 1 trial where the proportion of H. contortus was reduced in the group supplemented with condensed-tannin pellets. The use of condensed tannins still requires additional studies to be advised as an effective method to manage gastrointestinal nematodes in farm.

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添加了健康干草和坚木的颗粒不足以控制肉羊商业羊群中的胃肠道线虫。
AH多重抗药GIN的出现危及全球草原羊养殖的可持续性。富含浓缩单宁的植物是目前正在探索的另一种寄生管理方法。进行了富含红豆素(Onobrychis viciifolia)和毛茛(Schinopsis spp.)颗粒的饲料补充试验。法国西部的三个肉羊农场参与了这项研究,总共进行了4次试验。在这21天的试验中,母羊被送回羊圈,其中一半的母羊接受平衡日粮,添加70 g健康干草和奎布拉丘草颗粒,另一半的母羊接受相同的日粮,添加70 g卢塞恩颗粒。在每个试验开始和结束时进行粪卵计数(FEC),幼虫培养后通过实时荧光定量PCR鉴定线虫种类。在D0时,4个试验中两组FEC相似。不同试验中感染母羊的菌种比例不同,夏季以弯血螨为主,冬季以色毛线虫为主。D21时,各组FEC无显著差异。除1个试验中添加浓缩单宁微丸组的弯尾螺比例降低外,各组间无显著差异。浓缩单宁的使用仍需要进一步的研究,以建议作为一种有效的方法来管理胃肠道线虫在农场。
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来源期刊
Parasitology
Parasitology 医学-寄生虫学
CiteScore
4.80
自引率
4.20%
发文量
280
审稿时长
3-8 weeks
期刊介绍: Parasitology is an important specialist journal covering the latest advances in the subject. It publishes original research and review papers on all aspects of parasitology and host-parasite relationships, including the latest discoveries in parasite biochemistry, molecular biology and genetics, ecology and epidemiology in the context of the biological, medical and veterinary sciences. Included in the subscription price are two special issues which contain reviews of current hot topics, one of which is the proceedings of the annual Symposia of the British Society for Parasitology, while the second, covering areas of significant topical interest, is commissioned by the editors and the editorial board.
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