Health risks associated with animal waste from intensive livestock units.

Potential health risks associated with animal waste arise as a consequence of direct microbial problems particularly salmonellosis, indirect microbial problems arising from drug resistance etc., toxic residues from therapeutic or prophylactic agents, or from poisonous gases generated in liquid waste. The biggest of these hazards arises from direct microbial problems but fortunately experience in the UK suggests that these problems can be controlled reasonably well if sensible action is taken both at the planning and operative stages.