Increasing food production for the growing human population off a constraining land base
will require greater efficiency of production. Genetic improvement of feed efficiency in cattle …

As grain prices have increased dramatically in the past year, understanding the fundamental
genetic, cellular, and biochemical mechanisms responsible for feed efficiency (FE; g of …

Residual feed intake (RFI) is a measure of feed efficiency that is independent of level of
production, such as size and growth rate in beef cattle, and thus is a useful new trait for …

Seventy-six Angus steers chosen from breeding lines divergently selected for residual feed
intake (RFI) were studied to quantify the relationship between RFI and the daily rate of …

Genetic selection for residual feed intake (RFI) is an indirect approach for reducing enteric
methane (CH4) emissions in beef and dairy cattle. RFI is moderately heritable (0.26 to 0.43) …

Background Feed cost constitutes about 70% of the cost of raising broilers, but the efficiency
of feed utilization has not kept up the growth potential of today's broilers. Improvement in …

No genetic parameters for performance and feed efficiency traits are available for Irish
performance-tested bulls. The objective of this study was to determine the phenotypic and …

This study examined the relationship of feed efficiency and performance with feeding
behavior, blood metabolic variables, and various body composition measurements in …

There is a demand in the livestock industry for alternative assessments of feed efficiency.
Infrared thermography was tested for predicting heat production, methane production and for …

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 …