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  • Title: A suitable model for the utilization of Duddingtonia flagrans fungus in small-flock-size sheep farms.
    Author: Santurio JM, Zanette RA, Da Silva AS, Fanfa VR, Farret MH, Ragagnin L, Hecktheuer PA, Monteiro SG.
    Journal: Exp Parasitol; 2011 Apr; 127(4):727-31. PubMed ID: 21272579.
    Abstract:
    Effective alternatives to anthelmintic treatment of nematode parasite infections of sheep are required because of the high prevalence of drug resistance. Within this context, the nematode-trapping fungus Duddingtonia flagrans has become a valuable component of various integrated control strategies. Toward this objective, a small quantity of lyophilized D. flagrans chlamydospores (10(6) spores per animal) was administered to sheep in a one-year plot study. Animals grazing on native pasture were divided into two homogeneous groups and were kept in 1-ha paddocks in the southern region of Brazil. The oral administration of chlamydospores led to a significant reduction (p<0.05) in the number of nematode eggs per gram of feces and in the larval availability on herbage (difference of 37.6%) in comparison to the control group. Control animals needed to be dewormed three times during the experiment, whereas the fungus-treated animals maintained a low parasite load, independent of seasonal variation. Although D. flagrans cannot serve as a panacea for nematode parasite control of livestock, it represents a significant advance toward rationalizing the use of endoparasitic drugs in small animals.
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