THE EFFECT OF LABORATORY AEROBIC STABILIZ ATION OF LIQUID EXCREMENTS OF PIGS ON VITALITY OF SALMONELLA-TYPHIMURIUM AND ASCARIS-SUUM-GERMS

Laboratory aerobic mesophilic stabilisation (fermentation) of pig slur ry reduced the survival time of S. typhimurium, compared with their pr evalence in anaerobic excrements. The decimation time T90 for S. typhi murium, was 32 hours. The effect of aerobic stabilisation on the survi val of nonembryoted eggs of the model helminth A. suum was lower than that observed in Salmonella. After 54 hours of aerobic stabilization o f slurry only 32 % of eggs were devitalized. Stabilized control group did not develop 13 % of eggs into their embryonated stage.