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The 11th Annual “Best of Both Worlds”Angus & Charolais Bull and Female SaleFriday • September 2, 2011 • 3 p.m. (PST) |
Understanding Residual Feed Intake (RFI)
Residual Feed Intake (RFI) is simply the difference between expected intake and actual intake, measured in Kg units. 1Kg = 2.2 lbs.
- The expected intake is calculated using ADG and weight. The average of the entire pen is used to calculate expected intake.
- Actual intake is measured using the Growsafe system.
- To get RFI, subtract the expected intake from the actual intake.
- A negative number is most desirable. A Bull with a -4.00 means he ate 4.00 Kg or 8.80 lbs less per day than he was expected to eat based on his ADG and weight.
RFI and ADG data for the bulls will be available online as soon as it is processed. Fall bulls will not come off test until August 20, so expect this data around August 29th.
