Understanding circovirusdiseases in piglets and sows

摘要

Porcine circovirus (PCV) is so called due to the circular form of its DNA. PCV type 2 is the causative agent of several diseases including porcine multisys-temic wasting disease (PMWS) in piglets and PCV-reproductive disease (PCV2-RD) in sows. The virus is transmitted through infected feces and via mechanical means including clothing, equipment and vehicles. It is thought that rodents and birds may also be able tospread the virus. Mixing of pigs, stressful conditions, continual production and high stocking densities make the occurrence of clinical signs more likely.