Your Gilt Pool: Replacement Rate and the Daughter Mistake
A backyard sow lasts five or six parities, so a 5-sow herd needs about two replacement gilts every year. The cheapest-looking source, your own boar's daughter, is the most expensive: 25% inbreeding costs 0.6 to 1.0 piglets a litter and 7.5 kg at 160 days, roughly ₱17,600 to ₱24,300 a year. That is a bought gilt's price, annually.