unfortunately you can only dispose of the insides you don't want in a official legal manner (no burying or burning ) and that costs almost as much as the abattoir fee to the small holder with an individual animal
plus pigs is easier if you have the big hot tank to scrape the skin off (gotta get it right i Love Cracklin and want to develop chocolate coated Pork Scratchings the Food of the gods

)
and you cant sell the meat if you home kill (pole axe might not be legal here any more )
hey you can shoot a deer dump the guts in the bushes where it was shot tho