Does weight gain come along with the procedures he has had?
No, Chastity was a big woman prior to the procedure. I am thinking maybe a good old fashioned stomach stapling might have done more for her self esteem and led to greater happiness in life than the addition of an appendage!
Likely does. I know you castrate hogs to make them gain weight.
I'll bet an Adadicktame will do the same for a sow.