tailieunhanh - Báo cáo khoa học: "Biological Control of Sheep Parasites using Duddingtonia"

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú y đề tài: Biological Control of Sheep Parasites using Duddingtonia. | Acta vet. scand. 2006 47 23-32. Biological Control of Sheep Parasites using Duddingtonia flagrans Trials on Commercial Farms in Sweden By P J. Waller1 . Ljungstrom2 O. Schwan3 L. Rudby Martin4 D. A. Morrison1 and A. Rydzik1 Department of Parasitology SWEPAR National Veterinary Institute and Swedish University of Agricultural Sciences SE-751 89 Uppsala Sweden 2Vidilab Box 33 74521 Enkõping Sweden 3Svenska Djurhalsovarden Visby Sweden and 4Svenska Djurhalsovarden AB 24482 Kavlinge Sweden. Waller P Ljungstrom BL Schwan O Rudby Martin L Morrison DA and Rydzik A Biological Control of Sheep Parasites using Duddingtonia flagrans Trials on Commercial Farms in Sweden. Acta vet. scand. 2006 47 23-32. -Trials were conducted on 3 commercial sheep farms in Sweden to assess the effect of administering spores of the nematode trapping fungus Duddingtonia flagrans together with supplementary feed to lactating ewes for the first 6 weeks from turn-out on pastures in spring. Also control groups of ewes receiving only feed supplement were established on all 3 farms. Groups were monitored by intensive parasitological investigation. The ewes and their lambs were moved in late June to saved pastures for summer grazing the lambs receiving an anthelmintic treatment at this time. After approximately 6 weeks on summer pasture the lambs were weaned treated a second time with anthelmintic and returned to their original lambing pastures for finishing. Decisions as to when lambs were to be marketed were entirely at the discretion of the farmer co-operators. No difference in lamb performance was found between the two treatments on all three farms. This was attributed to the high levels of nutrition initially of the ewes limiting their post-partum rise in nematode faecal egg counts in spring which in turn resulted in low levels of nematode infection on pastures throughout the autumn period. Additionally pastures were of good quality for the lambs during the finishing period so they grew at .

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