Mycoplasma hyopneumoniae seroprevalence and control strategies on farms participating in the National Animal Health Monitoring System (NAHMS) Swine 2000 Survey

摘要

Mycoplasma hyopneumoniae is widespread in the United States. In breeding herds tested, 47.4% of animals were classified as positive or suspect for antibodies to Mycoplasma hyopneumoniae. In finishers, the percentage of positive animals was 54.4%. Interestingly, 82.3% of finishing sites had at least 1 animal seropositive for Mycoplasma hyopneumoniae, and 94.4% of breeding sites had at least 1 positive animal. This high incidence of mycoplasmal pneumonia has prompted producers to adapt a number of control strategies to combat the disease; this study indicates that vaccination is the most common control strategy.