Instructions
Select your breeding stock. Choose male and female pigs based on the traits you want in your piglets. For example, if you are breeding pigs in order to sell the piglets as pets, choose breeding pigs with calm temperaments. If you are breeding pigs to sell the piglets as food sources, choose pigs with muscle, leanness and a high growth rate.
Keep your pigs in separate pens segregated by gender in order to maintain more control over the breeding process. One boar can inseminate multiple sows, so if you are breeding for profit and have several sows, keep them in a pen separate from but adjacent to the boar's pen. This allows you to observe your pigs' estrus cycles.
Watch your sows for signs of estrus. Female pigs come into heat approximately every 21 days and can conceive for a period of two to three days after entering estrus. When the pig's vulva turns red and swells, she is ready to be bred.
Bring the sow to the boar's pen. You'll need to stay and supervise to ensure that neither pig gets hurt during the breeding process. If the one pig tries to hurt the other, separate them and try again later. If breeding is successful, lead the sow back to her pen afterward. You can breed the pigs again the following day if desired to increase the chances of pregnancy.
Repeat the process in three weeks if necessary. It may take several tries before your pig conceives.
How to Mate & Breed Pigs
Pigs produce large litters, and breeding them is a relatively straightforward process. Pigs have a gestation period of a little over a hundred days, so a sow can breed multiple times a year. They can be kept and bred for many purposes. Some pig owners sell piglets as pets, while others sell piglets as breeding animals or for slaughter. Whatever your purpose is in breeding pigs, the process is basically the same.