P2 is a PSSM2 variant - it is a dominant disease Genetic Testing is Available
The symptoms for a P2 horse are similar to PSSM1 horses. Symptoms include weird things like, being "cinchy, rock hard tense muscles, mysterious lameness, hard to get on a certain lead, bucking when they lope, bunny hopping, many other strange symptoms including muscle divoting, exercise intolerance and changes in temperament . With a change of feed and exercise many horses show dramatic improvement and go on to live very useful lives while some do actually have to be put down from this disease. P2 on its own can cause severe symptoms.
What breeds does it Affect?
To date it has been found in Quarter Horses, Paints, Appaloosas, POAs, Arabians, Paso Finos, Hanoverians, Oldenburgs, Holsteiners and Thoroughbreds
Is the source horse known?
Is there treatment for it?
For more comprehensive helpclick the link at the right - Getting Help for Your Horse.