PERACUTE GLASSER'S DISEASE CAUSED BY HAEMOPHILUS PARASUIS SEROTYPE 10 CAUSING SIGNIFICANT LOSSES AMONG FINISHER PIGS AFTER A MEDICATED PARTIAL DEPOPULATION

摘要

This case study describes a severe outbreak ofperacute Classer's disease affecting finisher pigs at the point of slaughter on a 600 sow indoor four weekly batch farrowing farrow-to-finish herd. The affected group of pigs was part of the first batch ofgrowing pigs to be producedimmediately after a medicated partial depopulation programme forthe eradication of Mycoplasma hyopneumoniae (M.hyopneumoniae), the cause of enzootic pneumonia (EP) and Porcine Reproductive and Respiratory Syndrome Virus (PRRSv) from the unit. The case study aims to discuss: The epidemiology of Haemophilus parasuis (H.parasuis) on this unit and the influence of the partial depopulation on it. Did the health interventions increase the risk of the Classer's disease outbreak? Potential interventions for mitigating these risks in future depopulation programmes. The financial implications of the disease outbreak and whether they should influence the decision to undergo interventions to improve health by eradicating pathogens.