R
Glossary
Recorded
trait
Traits
actually recorded on the animal.
Relative
economic value
The
amount by which net income to the cattle enterprise will change, per unit change
in genetic merit for a trait.
Reproductive
status
Describes
the standing of the animal in respect of its breeding cycle/status.
Rib
eye area
Area
of the longissimus muscle measured at the 12th rib interface on the beef
forequarter.
Rib
Fat Thickness
The
thickness of fat measured at a location on the live animal using ultarasound. A
common site assessed in a number of countries is located ¾ of the distance from
the medial to the dorsal end of the longissimus dorsi at a lateral point between
the 12th and 13th rib.
Room
temperature
Room
temperature, in laboratory reports, is taken to be roughly 21–23 degrees Celsius
(70–73 degrees Fahrenheit), or 294–296 kelvins. The “standard” room temperature
is 22 °C (72 °F or 295 K).
Rump
fat thickness or P8 scan
An
indicator of fatness and can be used to improve the overall accuracy of external
fat measurements, measured using ultrasound.