http://www.ag.uiuc.edu/archives/experts/swine/0859.html

ANDREW this brings back memeries when i raised pigs we always wanted female pigs so we didnt have the job of castration it was never a fun job. Now with sheep we used to bite the testicles off you would cut the sack poen pop out the testicles and bite them off.Come out to farm and give it a try.