Pig-tionary. FEMALE PIGS are called gilts or sows. A SOW is a female pig that has had piglets. A GILT is a young female pig that has never had piglets. MALE PIGS are called boars or barrows. BOARS are male pigs used for breeding. BARROWS are neutered male pigs that cannot breed. LITTER: A litter refers to the baby pigs born to a sow at one time. HE