Did anyone ever hear of parts of roosters being used for medicine? My mom has a customer that gets a monthly shot that costs $800.This shot contains fat or something from the rooster neck area.This fat is processed and used in injections to create lubrication .He has something wrong with his knee,and gets this shot for that area. I have not looked into it yet,but thought geez all those roosters culled at birth or later when found out to be roosters.....could turn quite a profit. Ofcourse maybe these are *special* roosters.Special breed or something. Good money for someone if it is true!