1. Beef Carcass Yield Grading CDE Practice Based on the 2002 Georgia State Meats CDE
By: Jennie Simpson and Dr. Frank Flanders
Georgia Agricultural Education Curriculum Office
Georgia Department of Education
December 2004
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2. Before you begin…………. Carcass #1 Carcass #2 Carcass #3 Carcass #4
The objective of this exercise is to practice yield grading beef carcasses. Ribeye size and fat thickness over the ribeye must be estimated as well as the kidney, pelvic, and heart fat (KPH). KPH and the hot carcass weight are given in the following problems, which were taken from the 2002 State CDE competition in Athens, GA. Click on a carcass to START.
Carcass #1
Carcass #2
Carcass #3
Carcass #4

3. Beef Carcass Yield Grading
Evaluate yield grade and choose the correct answer in the box on the left.
Yield Grade
1 High
Average
Low
2 High
3 High
4 High
5 High
Given Values
Hot Carcass Weight
772 lb.
KPH
3 %
Click on ribeye below to enlarge, view grid, and estimate fat thickness.
Next Carcass
Return to Menu

4. Beef Carcass Yield Grading
Evaluate yield grade and choose the correct answer in the box on the left.
Yield Grade
1 High
Average
Low
2 High
3 High
4 High
5 High
Given Values
Hot Carcass Weight
627 lb.
KPH
2.5 %
Click on ribeye below to enlarge, view grid, and estimate fat thickness.
Next Carcass
Return to Menu

5. Beef Carcass Yield Grading
Evaluate yield grade and choose the correct answer in the box on the left.
Yield Grade
1 High
Average
Low
2 High
3 High
4 High
5 High
Given Values
Hot Carcass Weight
575 lb.
KPH
1.5 %
Click on ribeye below to enlarge, view grid, and estimate fat thickness.
Next Carcass
Return to Menu

6. Beef Carcass Yield Grading
Evaluate yield grade and choose the correct answer in the box on the left.
Yield Grade
1 High
Average
Low
2 High
3 High
4 High
5 High
Given Values
Hot Carcass Weight
650 lb.
KPH 4%
Click on ribeye below to enlarge, view grid, and estimate fat thickness.
Return to Menu
END

7. Carcass #1 Answer Return FYG=3.15 High Step 1
FT=0.5 inches for carcass #1.
Base=PYG 2.0 for 0.0 in. of fat
Adj.= (Each 0.1 increase in fat, add 0.25 to PYG)
PYG= 3.25
Step 2
HCW=772 lb. for carcass #1
Base= 600 lb. and 11.0 in^2 REA
RREA= 13.0
(Each 25 lb. increase, add 0.3 to RREA)
Step 3
Has REA= 13.1
Each 0.3 inch deviation from RREA, adj. YG by 0.1
Adj. to YG= 0.0
Step 4
KPH= 3.0% for carcass #1
Base= 3.5%, for each 0.5% deviation, adj. YG by 0.1
Adj. to YG= -0.1
Final Step
REA Adj.= 0.0
KPH Adj.= -0.1
FYG= = 3.15
FYG=3.15

8. Carcass #2 Answer Return FYG=2.55 Average Step 1
FT=0.3 inches for carcass #2.
Base=PYG 2.0 for 0.0 in. of fat
Adj.= (Each 0.1 increase in fat, add 0.25 to PYG)
PYG= 2.75
Step 2
HCW=627 lb. for carcass #2
Base= 600 lb. and 11.0 in^2 REA
RREA= 11.3
(Each 25 lb. increase, add 0.3 to RREA)
Step 3
Has REA= 11.4
Each 0.3 inch deviation from RREA, adj. YG by 0.1
Adj. to YG= 0.0
Step 4
KPH= 2.5% for carcass #2
Base= 3.5%, for each 0.5% deviation, adj. YG by 0.1
Adj. to YG= -0.2
Final Step
REA Adj.= 0.0
KPH Adj.= -0.2
FYG= = 2.55
FYG=2.55

9. Carcass #3 Answer Return FYG=1.6 Average Step 1
FT=0.0 inches for carcass #3.
Base=PYG 2.0 for 0.0 in. of fat
Adj.= 0.0 (Each 0.1 increase in fat, add 0.25 to PYG)
PYG= 2.00
Step 2
HCW=575 lb. for carcass #3
Base= 600 lb. and 11.0 in^2 REA
RREA= 10.7
(Each 25 lb. increase, add 0.3 to RREA)
Step 3
Has REA= 10.7
Each 0.3 inch deviation from RREA, adj. YG by 0.1
Adj. to YG= 0.0
Step 4
KPH= 1.5% for carcass #3
Base= 3.5%, for each 0.5% deviation, adj. YG by 0.1
Adj. to YG= -0.4
Final Step
REA Adj.= 0.0
KPH Adj.= -0.4
FYG= = 1.6
FYG=1.6

10. Carcass #4 Answer Return FYG=4.25 High Step 1
FT= 0.9 inches for carcass #4.
Base= PYG 2.0 for 0.0 in. of fat
Adj.= (Each 0.1 increase in fat, add 0.25 to PYG)
PYG= 4.25
Step 2
HCW=650 lb. for carcass #4
Base= 600 lb. and 11.0 in^2 REA
RREA= 11.6
(Each 25 lb. increase, add 0.3 to RREA)
Step 3
Has REA= 12.0
Each 0.3 inch deviation from RREA, adj. YG by 0.1
Adj. to YG= -0.1
Step 4
KPH= 4% for carcass #4
Base= 3.5%, for each 0.5% deviation, adj. YG by 0.1
Adj. to YG= +0.1
Final Step
REA Adj.= -0.1
KPH Adj.= +0.1
FYG= = 4.25
FYG=4.25

11. THE
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