Complex events lead to pneumonia in pigs
Porcine Respiratory Disease Complex (PRDC), recognized by various respiratory signs and often resulting in reduced feed efficiency and poor growth, remains a major economic concern in pig farms around the world.
The term PRDC refers to the complex mixture of the following elements that result in pneumonia in pigs:
- Nutritional factors
- Management factors
- Host immune system weakness
Pathogens commonly involved in PRDC:
- Porcine Reproductive and Respiratory Syndrome virus (PRRSv)
- Swine Influenza Virus (SIV)
- Porcine circovirus type 2 (PCV2), which causes Porcine Circovirus Diseases (PCVD)
- Mycoplasma hyopneumoniae (M. hyo), which causes Enzootic Pneumonia
- Haemophilus parasuis, which causes Glässers Disease
- Actinobacillus pleuropneumoniae, which causes Porcine pleuropneumonia
- Streptococcus suis
PRDC is seldom the result of one pathogen, and pathogens involved vary between countries, regions and farms.