True Fear of Porcine Actinobacillus Pleuropneumonia
Similar to cows, pigs have a small lung volume relative to their body volume. As a result, a great burden is placed on their lungs. Therefore, pigs are prone to suffer from respiratory disease. Factors such as stress are complexly involved, and also, in some cases one type of pathogen causes respiratory disease, however in many cases, mixed infection of multiple types of pathogens causes respiratory disease.