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The Byrd Cattle Co.
9th Annual Friday • September 4, 2009 • 4 p.m. (PST) |
Understanding Residual Feed Intake (RFI)
New data available! Download the Excel files for each group:
- Angus Spring Group 1
- Angus Spring Group 2
- Angus Spring Group 3
- Angus Fall Group
- Charolais Spring Group
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 31st.