Do particular states or regions add more than their share to the ups and downs in hog production? Generally not. Hog-producing states contribute to the cycle roughly in proportion to the total number of hogs they raise.
Beneke, Raymond R.; Kaldor, Donald R.; and Herendeen, James
"States Share in Creating Hog Cycle,"
Iowa Farm Science: Vol. 15
, Article 3.
Available at: https://lib.dr.iastate.edu/farmscience/vol15/iss5/3