When a ewe gives birth, it is called lambing. A ewe often gives birth to twin lambs, sometimes even triplets or quadruplets. Meat from sheep is called lamb. Swine Female swine are called gilts. After a gilt has given birth, she is called a sow.
Male swine are either boars or barrows.
Boars are male swine that are capable of producing offspring. Barrows are male swine that have been neutered and are not capable of reproducing. The offspring of a boar and a sow is a piglet or pig. When a sow gives birth, it is called farrowing. A sow gives birth to a group of 8 - 12 piglets, called a litter.