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It’s A Six Star Steak
Debbie McAllister
Penn State University
2005
The Future is Here
• Genetic Solutions
– Australia
• Bovigen Solutions, LLC
– United States
• Offering commercial DNA
tests for marbling,
tenderness, traceability,
coat color and paternity
~30,000 genes
The Reasoning
• Top two quality
concerns in NCBA
2000 Quality Audit
• Allows producers
to select for traits
that are difficult
and expensive to
measure, but
economically
important
Executive Summary of the 2000 NCBA Quality Audit
Marbling
• First gene marker for production
trait in beef cattle
• Tests for favorable alleles of the
Thyroglobulin gene on
chromosome 14
– TG5 single nucleotide
polymorphism fragment
• Thyroglobulin is involved in
creating fat cells within fibers
Marbling and Grades
Maturity
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to add text
Marbling
Abundant
Mod. Abund.
Sl. Abund.
Moderate
Modest
Small
Slight
Traces
Pract. Dev.
A
B
C
D
Prime
Commercial
Choice
Select
Standard
Utility
E
Marbling and Grades
Bovigen Solutions, LLC
Group 1 – yearlings
Group 2 – calves
Group 3 - NBCEC
www.beef.crc.org.au
Marbling and Breeds
0% 2-STAR
90+% 0-STAR
~40% 2-STAR
Marbling and Breeds
• Japanese Black Wagyu
cattle
– Breed leader for marbling
– Kobe beef
– Steaks sell for $120-250
Tenderness
• Tests for alleles of
Calpastatin and
Calpain genes
• The Calpain gene
weakens muscle fibers
during post mortem
aging
• The Calpastatin gene is
a naturally occurring
enzyme that inhibits
Calpain
A Perfect 6
• Herd improvement
Summitcrest Star Power
M
CALP
• Tailor products to
different markets
CALPST
• Consumer
satisfaction
HML Garder
Reaching for the stars…
“A quality herd means a quality steak,
customer satisfaction and a premium that is
felt all the way through the supply chain.”
- Jason Strong
Genetic Solutions
Sales & Marketing Manager
THANK YOU!
Questions??