[Epidemiologic studies of worm burden in the Swabia piglet production and fattening industry].

By means of collected samples the status of parasites in 121 farms of piglet producing management in Swabia was coproscopically investigated in almost 5250 animals of various groups, taking into consideration the different methods of control. In contrast to the animals in 2 of 14 fattening farms (=14.3%) the pigs in 78 of 121 farms, including pure breeding and fattening production (=64.5%) were considerably affected with worms. The highest proportion was with 41 and 56.3% the nudular worms, ascarids occurred, depending on the type of management in anything between 16.2 and 375%, coccidia infestations were determined in 18.8 and 19% and whipeworms i.e. stomach worms could be found in 8.5 i.e. 1% relative values between 1.9 and 12.5% were established in threadworms. With prolonging the intervals of therapy according to the different animal groups as well as a more frequent stay on pasture, a high risk of infection seems to be certain, while the difference of single of mass treatment proved to be insignificant.