Interest in improving feed efficiency in cattle is intensifying. Residual feed intake (RFI), which
is the difference between expected intake and that predicted based on energy demands, is …

Feed intake and efficiency of growth are economically important traits of beef cattle. This
study determined the relationships of daily DMI, feed: gain ratio [F: G, which is the reciprocal …

The feed resource for animals is a major cost determinant for profitability in livestock
production enterprises, and thus any effort at improving the efficiency of feed use will help to …

The genetic evaluation of economically important traits utilizes estimates of genetic
variability, which are represented by heritability. This review summarizes the published …

Providing feed is a major input cost in beef production, hence improvements in the efficiency
of feed utilisation will reduce the cost of production. Residual feed intake (RFI) is a measure …

The objectives of this study were to quantify the phenotypic variation in residual feed intake
(RFI) in pregnant beef heifers offered a grass silage diet and to characterize their …

Genetic and phenotypic parameters for feed efficiency, growth, and carcass traits for
Australian Angus beef cattle were estimated. Growth traits included birth weight (BWT), 200 …

Some definitions of feed efficiency such as residual energy intake (REI) and residual gain
(RG) may not truly reflect production efficiency. The energy sinks used in the derivation of …

Residual feed intake (RFI) represents the deviation of the actual feed consumption of an
animal from that predicted from combination of growth traits. Data on 1642 Duroc (380 …

We estimated the genetic parameters related to feed intake (FI), feed efficiency traits
(including feed conversion ratio (FCR) and residual feed intake (RFI) of digestible crude …