From: Relationships between pig farm management and facilities and lung lesions' scores and between lung lesions scores and carcass characteristics
Disease
Herds (%)
Mycoplasmal pneumonia of swine
95.5
Porcine circovirus disease
Atrophic Rhinitis
81.8
Swine Influenza
45.5
Porcine reproductive and respiratory syndrome
Porcine pleuropneumonia
4.6