Lameness in pigs is increasingly attributed to Mycoplasma hyosynoviae. This bacterium causes, among other things, joint inflammation.

Research from the University of Ghent shows that 10% to 30% of fattening pigs have defects.

Mycoplasma occurs in many farms, the bacterium is usually persistent in the upper respiratory tract of the pig. Animals between 3 and 5 months are most likely to spread mycoplasma further into the body. This is because maternal immunity at this age decreases and piglets are still fully engaged in building the body's immunity.

In addition, stressful moments such as piglets in motion and a high occupancy rate also play a role in the development of joint inflammation caused by mycoplasmas. Due to stress, the resistance of the animal temporarily decreases.

Chronic lameness samples

Mycoplasmas are difficult to prove. In pigs that are offered for autopsy, there is discolored synovial fluid that indicates inflammation. Companies suffering from chronic lameness may ask the veterinarian to take samples of synovial fluid from a number of pigs and have these samples examined.

Best effect of early treatment

Mycoplasma is sensitive to tetracyclines, but not to penicillin. Early treatment has the best effect, combined with an analgesic to keep the pig more active and to eat. There are no vaccines available against Mycoplasma hyosynoviae. Companies can properly prevent stable climate to limit the spread of mycoplasma airways to other pigs.

Photo

  •   Photo: Henk Riswick