The principal breeds raised in the Sacramento Valley in 1915 were Berkshires, Duroc Jerseys, Yorkshires, Poland China and Chester Whites. Again, the abundance of alfalfa here in the Valley made hog raising a profitable business. Hogs fatten on alfalfa as well as they do on corn and on the dairy farm hogs convert skimmed milk into profits. They also eat up the waste and increase the income of the farmer. Sacramento County in the heart of California.