greg highfill area livestock specialist oklahoma cooperative extension service
DESCRIPTION
OK Steer Feedout Utilizing Vision Image Analysis and Warner-Bratzler Shear Force Data in Educational Programming. Greg Highfill Area Livestock Specialist Oklahoma Cooperative Extension Service. Since 1984 Groups of 5 head Fall Born Test – August – Feb. Spring Born Test – Nov. - May - PowerPoint PPT PresentationTRANSCRIPT
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OK Steer Feedout Utilizing Vision Image Analysis and
Warner-Bratzler Shear Force Data in Educational Programming
Greg HighfillArea Livestock Specialist
Oklahoma Cooperative Extension Service
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• Since 1984• Groups of 5 head
Fall Born Test – August – Feb. Spring Born Test – Nov. - May
• 150 – 180 Days on Feed• Grid Market – 3 of 5 est. Choice
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MarblingMt 60
4.10 554 1288
Choice °
R. C. Brinlee 132
DOF179
Carcass Wt. 783Fat .35REA 13.0YG Calc 2.99USDA YG 2
CAB
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MarblingSl 50
2.86 650 1122
Select -
Randall Newton 57
DOF165
Carcass Wt. 690Fat .30REA 12.6YG Calc 2.24USDA YG 2
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Warner-Bratzler Shear Force
• Since 1999• 25% of steers• 593 steaks sampled• OSU FAPC
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0%
20%
40%
60%
80%
100%
% Choice % Tender
OKSFO 1999-2006Steers Tenderness Tested
n = 593
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1/10
6/10
4/142/9
10/10 14/14 9/9 10/10
0%20%40%60%80%
100%
2004 2005 2006 2007
% Choice % Tender
OK Steer Feedout - Ranch Data ExamplePercent Tender & Percent Choice by Year
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4
6
8
10
12
14
16
18
200 300 400 500 600 700
Marbling Score 400=Choice
War
ner-
Bra
tzle
r Sh
ear
Forc
e, lb
sMarbling Score as a Predictor of Warner-Bratzler Shear Force Values
R = - 0.1974
12.5 & up Very Tough10.1- 12.5 Tough8.51- 10.0 Tender< 8.5 lbs Very Tender
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Vision Image Analysis - VIA
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MarblingMt 40
Choice °Sterling Silver
Fat Th. .60 in.
REA 11.9 sq. in.
Walker Hall 26
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VIA
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Vision Image AnalysisGroup 1
N=48
Group 2
N=21
Average Lean Area, sq in. 12.26 12.55
Average Fat Thickness .382 .441
Average Adj. Marbling Score 1.9825 2.246
Average Lean Color Score 39.7 38.2
Average Red Meat Yield 72.65% 72.22%
Red Meat Yield Max/Min 75.3 / 70.0 74.5 / 71.4
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Vision Image AnalysisGroup 1
N=48
Group 2
N=21
Percent Light Muscled 14.6% 14.3%
Percent Average Muscled 58.3% 76.2%
Percent Heavy Muscled 27.1% 9.5%
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Calculated YG vs VIA RMY
68.0%
70.0%
72.0%
74.0%
76.0%
78.0%
1.001.502.002.503.003.504.004.50
Calculated Yield Grade
Red
Mea
t Yie
ld
r = -0.792
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Vision Image Analysis
• Developed to Enhance USDA Quality and Yield Grading Approved October 2006 Still in Implementation Stage RMS to E+V Camera – Cargill Meat Solutions
• Increase Producer Feedback Extension programming
• Value Determination
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0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
Calculated and USDA YG
VIA
YG
Calc YG
USDA YG
Linear (Calc YG)
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