As for the boar losing his shields if castrated, I've killed sows with calloused "shields" on them that were 1 - 1.75" thick in the state the OP is going to be hunting in.
You have some new information that the experts at Texas A&M have not been able to document. You should really document your findings and send them some pictures along with tissue samples to them.
Contact Texas A&M at Overton, TX with your findings, they will be excited at your new biological findings in female feral hogs. They will really be interested in cross gender hormonal genetics between male and female feral hogs.
Let us know what they have to say about the new break through of your knowledge. Can't wait to hear about it.
Dr. H. will be your primary person to contact.
Last edited by fdf; February 11, 2014 at 06:33 PM.