The effect of duddingtonia Flagrans on naturally acquired ovine nematode infections

Citation:
S.M G, Larsen M, Thamsborf SM, Nansen P. "The effect of duddingtonia Flagrans on naturally acquired ovine nematode infections.". 1998;23:106.

Abstract:

The ability of the nematode destroying fungus Duddingtonia flagrans (DSM 6703) to control naturally acquired ovine nematode infections was evaluated using four groups of 8 parasite-naïve lambs which were turned out on infected paddocks. Two groups (F1+2) received Duddingtonia flagrans mixed in 100 grams barley while the other two (C1 +2) received barley only. All groups remained set stocked until slaughter.

The faecal egg counts were comparable for the 2 treatments throughout the grazing period. Larval development of Ostertagia/Trichostrongylus spp. in faecal cultures was 1 – 28% in the fungal fed groups capred with 60-80% in the untreated groups(p-0.05). in September, pasture larval counts of Ostertagia spp. were 62% lower in the fungi fed groups compared with the untreated groups (p-0.05). Four parasite free lambs were introduced to each paddock in October o monitor any differences in pasture infectivity and slaughtered for worm counts after 3 weeks of housing. The total worm burden of traces on paddocks previously grazed by fungi-fed lambs was reduced 86% (p-0.05); geometric means) compared with control groups, while significant reductions were also seen in abomasal worm counts (6;8%; p-0.05).

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