For pig producers and veterinarians, the health and economic impact oiMycoplasma hyopneumoniae (MH) is clear. In the US, enzootic pneumonia caused by MH is considered one of the "big three" respiratory diseases in swine, following the porcine respiratory and reproductive syndrome (PRRS) and influenza viruses. Less clear, however, is how to manage this cosdy and persistent pathogen. The first step to manage the disease is to understand the current status within the herd. An MH herd status classification was introduced at the AASV 2016 conference.1 By following well-defined diagnostic requirements, breeding herds can be categorized as positive stable, positive unstable, provisionally negative or negative. The objective of this study was to adhere to these diagnostic requirements in multiple breeding herds within a swine operation and to characterize their MH status in a commercial setting. To achieve this goal, we focused on the ability of detecting positive samples and testing diagnostic indicatorsof uniform immunity.
展开▼
