I mostly take meat from the pigs for dog food. Occasionally I will take a young pig for meat.
It all starts with good country. If the pigs are of good country i.e. floodplains the condition of the animal is reflected to its enviroment.
Food rich environment and medium density numbers of animals domestic and feral, usually has pigs in great condition I still inspect most for worms Very common on country shared with cattle for round worms.
Harder country , more likely to be eating carcasses I will not consider taking a animal for meat. High risk of tape worm.
Dogs are wormed every 10 weeks with a all round worm treatment and a extra for tape worm. Heart worm included.
Heres some pics
sow of floodplains, decided to take the meat for dogs. On opening decided to take the back straps Exceptional / fat and tender.

huge fat sow great condition very good back straps

opening for back straps above sow

Hard country pigs, look okay?

Tape worms in stomach