Feed Conversion Ratio (FCR) in Livestock Feeding Today, we are learning the feed conversion ratio formula and the importance of FCR in the livestock. Feed conversion ratio (FCR) or feed conversion rate is a ratio or rate evaluating of the efficiency with which the bodies of livestock convert animal feed into the desired output. The feed conversion ratio is an indicator that is commonly used in all kinds of farming, as well as in the field of research. It can give a good indication of how
