Why dont you buy another sow to live with your lone sow? or a neutered boar?
I must advice that you can not put two boars neutered or not with a single sow they will still fight.
I personally would get a friend for the lone sow and not breed. I have kept Guineas for nearly 9yrs and have experience of breeding finding the sow a friend is an easier option than to breed, do you know the history of the pigs you are planning to put togther?

Remember if you get a boar neutered he must not be with the sow for upto 4wks because the seimen can still be alive within side the tubes left within his body.

Emma x

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