Hog raisers know that pork prices have their ups and downs. But they don't always give enough attention to the way in which these prices change. Hog prices usually follow a more or less definite pattern from year to year.
Beneke, Raymond R.
"Planning Your Pork Production,"
Iowa Farm Science: Vol. 5
, Article 3.
Available at: https://lib.dr.iastate.edu/farmscience/vol5/iss12/3