Residual feed intake

Residual feed intake (sometimes shortened in literature to RFI) is a resource allocation theory index used to calculate the feed efficiency of growing cattle. It was developed by Robert M. Koch in 1963 as an answer to the difficulties of using a feed conversion ratio to compare individual animals. Effective use of RFI data can greatly improve beef cattle farm profits. This approach is based on regression models developed for determining efficiency of feed use for weight gain during a standardized growth trial in growing beef cattle. Residual feed intake (sometimes shortened in literature to RFI) is a resource allocation theory index used to calculate the feed efficiency of growing cattle. It was developed by Robert M. Koch in 1963 as an answer to the difficulties of using a feed conversion ratio to compare individual animals. Effective use of RFI data can greatly improve beef cattle farm profits. This approach is based on regression models developed for determining efficiency of feed use for weight gain during a standardized growth trial in growing beef cattle.