Microbiological and parasitolologic investigations of cattle slurry fermented aerobically in thermophilic conditions

Microbiological and parasitologic investigations dealing with the influence of aeration on fecal bacteria and Ascaris suum eggs survival in cattle slurry were carried out. The results showed that already the first stage of aeration (reactor I) eliminated quickly a number of Salmonella senftenberg (105 times during 2.5 hours in relation to the control test) and EHEC (108 times during 2.5 hours in relation to the control test) respectively. The longest survival time was for D group streptococci. Inactivation of Ascaris suum eggs due to thermic conditions fluctuated between 50 and 90 minutes. The final stage of aeration (reactor II) completely destroyed pathogen germs and Ascaris suum eggs present in cattle slurry.