If it's not bred, it's called a "gilt".
If it's bred, it's called a "sow".
Female swine (pigs/hogs) are called sows.
a female swine is smaller than a male swine...
a boar is a swine who has not been castarated a barrow is a male swine that has been castarated a guilt is a female swine that has not yet farrowed a pig is a female swine that has farrowed
A pig
Mature female pigs are called sows.
A pig that is young and is a female is called a pig.
A young female pig (swine) is referred to as a "gilt" - until after her first pregnancy (or litter of pigs/piglets). After giving birth (parturition) from her first pregnancy, a female pig (swine) is thereafter referred to as a "sow".
Sow a sow
Hog or Swine. (hog being a male pig, swine being female)
Legs
If it hasnt had piglets then it is a gilt but then if it has had piglets it is a sow.
A female pig that has not yet given birth to piglets is called a gilt.