The effect of duddingtonia Flagrans on naturally acquired ovine nematode infections

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


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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