Our sows normally rebreed seven days after weaning. We have one line of sows that hunt down a boar about ten days after farrowing, while they're still nursing, and rebreed ahead of schedule. These ladies have three litters a year. In part because they also have about a week or two shorter gestation cycle than most sows. This line also has more teats, produces bigger litters and weans bigger piglets than other sows so I'm working on crossing through our herd. This is the Blackie line.
So, with a 10 month old boar there's a good chance you'll find her in a piggy way.
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