Fig. 7From: Time series livestock diet optimization: cost-effective broiler feed substitution using the commodity price spread approachIllustration of multi stage LP model (CWSR) starter diet formulation results for four consecutive months between Feb and May 2009 at increasing corn wheat price spread above 10 USD/ton, and its impact on RSM and other input substitutions. The price spread (wheat/corn) was estimated at 96% in Feb-09 and went down to 83% in May-09Back to article page