Think PHA only comes from Clubby Shorts Famous Closed Herd 50 yr Pedigree

[aj]

One easy thing to do at a reasonable price is test herdbulls for everything. Just to make sure.....even if he is thought to be clean. Females is another deal. A lot of cost to test say 100 cows.

 

[aj]

Maybe there is two strains of PHA like there were two forms of TH.