The growth and seasonal dynamics of three helminth species (Ascaris suum, Oesophagostomum dentatum, and Trichocephalus suis) were studied on a modern pig-fattening farm of the PM-016-AGP type. The study of the dynamics of the incidence of the eggs of these helminth species demonstrated that large swine roundworm (Ascaris suum) had favourable conditions for further development at average daily temperatures above 12 degrees C. In winter when the average daily temperatures were lower than 10 degrees C, the occurrence rate of the eggs of the mentioned helminth species in pig excrements was significantly lower than in the other year seasons.
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