Effect of administering tulathromycin to IAV-S positive weaned pigs to control swine respiratory disease

摘要

Influenza A virus in swine (IAV-S) is an acute, highly transmissible respiratory disease that can affect all phases of swine production. Mortality associated with IAV-S is low; however, morbidity is nigh and can result in reduced body weight/condition, uneven growth, and prolonged finishing time.1 IAV-S is characterized by excessive pulmonary inflammation and hypersecretion, as well as impaired immunity to secondary pathogens. Macrolide antibiotics, specifically tulathromycin, have demonstrated anti-inflammatory properties beneficial for treating swine respiratory disease (SRD).2 Hiese immunomodulating properties may benefit animals widr respiratory inflammation caused by SRD, including IAV-S. The objective of this study was to evaluate the health and performance impact of administering tulathromycin (Draxxin 25~R) to IAV-S positive weaned pigs.