Why pigs in seasonally dry climates

My farm is in Puebla Mexico where we have wet summers and dry winters. There is not much feed available in the dry season so if I have sheep or cattle I would need to feed them over winter. With hogs I can just get a few sows bred in November and have plenty of piglets ready for the rainy season. Its cheap to buy 3 or 4 sows and feed over winter compared to having a large herd of sheep year round.