As a general rule the pigs start being sexually active but not yet fertile around four months. At eight months the females are generally fertile but every once in a while we get a Lolita, a gilt who births at ten months which means she was fertile at about six months. It is not common. We have hundreds of pigs so we have a fairly large sample set to see this in. If you don't want them impregnated then segregate. You're getting close to the mark. They
should be ready for market now or soon.
Cheers
-Walter
Sugar Mountain Farm
Pastured Pigs, Sheep & Kids
in the mountains of Vermont
Read about our on-farm butcher shop
project:
http://SugarMtnFarm.com/butchershop
http://SugarMtnFarm.com/csa