When does it become profitable to shift from one livestock enterprise to another? Or increase one, decrease another? "Linear Programming" technique can be of some help in choosing between certain livestock enterprises.
Mayer, Leo V.; Heady, Earl O.; and Andersen, Jay C.
"Matching Livestock Income in Northeastern Iowa,"
Iowa Farm Science: Vol. 20
, Article 4.
Available at: https://lib.dr.iastate.edu/farmscience/vol20/iss1/4