Coccidiosis is a protozoal disease that affects the small intestine and causes scour in suckling piglets. It is characterised by sometimes watery, sometimes creamy diarrhoea that ranges from yellow to white and is foul-smelling.
Infected pigs shed oocysts (coccidia ‘eggs’) that contaminate the farm. Even though subclinical infections show no symptoms they account for significant losses in the pig industry.