Usually in the wild, they produce 2 litters a year with up to 10 to 12 piglets each time.
Gestation - The 113 to 116 day period when the sow is pregnant from breeding until farrowing.
3 months, 3 weeks and 3 days.
Heat - Refers to the estrous period for the sow. The first estrous normally occurs 3 to 5 days after the pigs are weaned.
Weaning is usaually over in 12 to 14 weeks.
When a sow is in heat, her Vulva is twice it's size.