Meyer Hatchery has a feed consumption chart available here: http://www.meyerhatchery.com/productinfo.a5w?cat=1020&subcat=5081&prodID=WBRS&grd_prodone_filter=PRODUCT%5fID%20%3d%20%27WBRS%27
According to the chart, on average one of their meaties will consume about 15 lb. of feed. I do not know...