Midwest farmers in general have three choices in marketing their hogs; They can sell them live weight, priced with relatively little grading. They can sell them by live weight with more careful grading. Hogs can be priced according to carcass weight and grade.
Strand, Norman V. and Clifton, Elliot S.
"How Do Farmers Want to Market Their Hogs?,"
Iowa Farm Science: Vol. 8
, Article 3.
Available at: https://lib.dr.iastate.edu/farmscience/vol8/iss4/3