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Epidemiology as a basis for parasite control using as an example the cattle lung worm dictyocaulus viviparus


, : Epidemiology as a basis for parasite control using as an example the cattle lung worm dictyocaulus viviparus. Angewandte Parasitologie 18(4): 204

The cattle lungworm D. viviparus is used as a practical example to illustrate the epidemiology of parasitic diseases. The infestation predominantly occurs in animals in the 1st pasture period; the life span of the sexually mature Dictyocaulus lasts only a few months. In the climate of the Pre-Alps [Germany] it is essentially maintained from 1 pasture period to the next by pre-adults (early 5th instar). These hibernate in the lungs of young bovines and mature in the spring to sexually mature worms. About 20% of the larvae expelled from young bovines in the spring, after a prolonged quiescent period, turn into producers of more larvae. The surest method of combating lungworm is the strict separation of animals of the 1st and 2nd pasture periods.

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