ThefeedconversionratioFCRistheamountoffeedingestedbyananimalwhichcanbeconvertedintoonekiloofliveweightAstandardbroilerchickenrearedinanenclosedhousewillhaveanFCRbetween15to19PoultryincludingbroilerremainthespecieswhoseFCRisthelowestitcanbeaslowas15