PBR genetics

[haleiwa]

What breeds are used to get bucking bulls? I try to figure it out , but there doesn't seem to be one mix. I think I can identify Longhorn in some, and once I thought I saw one that had some Jersey in it. Is there a common element to the successful ones?

[bcreech]

there is actually a registry for bucking stock
I can't remember the name of it but they follow lineage just like Angus,hereford and other breeds
most have some brahma influence