Widespread in swine herds of different production systems

摘要

Ileitis is widespread in swine herds of different production systems worldwide.This disease is present in every single country that has a significant commercial swine production industry. It was the most frequent cause of disease in grower/finisher pigs reported in the 2000 National Animal Monitoring System survey, occurring on more than one-third of all sites and reported on 75% of large sites (10,000 or more total inventory) (Highlights, 2002). Studies have shown that the prevalence of positive herds ranges from 15-100% in different countries, depending on the diagnostic test used.