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History of the National CUP Lab™. Definitions. CUP – Centralized Ultrasound Processing UGC – Ultrasound Guidelines Council The Governing body of beef ultrasound in the USA/NA The CUP Lab™ - Walter & Associates Lab Tech – image interpreter Field Tech – image collector. History of CUP.
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Definitions • CUP – Centralized Ultrasound Processing • UGC – Ultrasound Guidelines Council • The Governing body of beef ultrasound in the USA/NA • The CUP Lab™ - Walter & Associates • Lab Tech – image interpreter • Field Tech – image collector
History of CUP • 1997 began at Iowa State University (AAA funded project) • Initially set up to be technician driven • Protocols and standards established • Fall 2000 – CUP Lab must leave ISU • January 2001 - Walter & Associates begins operation
The “CUP Lab™” System • Standardized carcass ultrasound image collection and interpretation • Used to insure uniformity and accuracy of carcass ultrasound data for genetic evaluations • Field and lab techs must be UGC certified
UGC • Prior to UGC – ISU controlled all aspects of software, staff, protocols and certifications • July 2001 – US Beef Breeds Council adopts basic structure for UGC • Test and certify both lab and field technicians • Test and certify interpretation software
The National CUP Lab™ • Exclusive CUP software • Hires only UGC Certified Lab Techs • CUP interpretation methods & image quality scoring • Extensive data cross-checking, verification and quality control • Database - consistent data transfer to associations • Archives data and images • Holds field and lab technicians accountable
From the Field • Images collected and sent to Lab • CORF = Chute Order Recording Form • Barn sheets contain ID, scan wt., sex, mgmt., grouping, etc. • Images, barn sheets, CORF, and payment sent to CUP Lab™ (mail, express, FTP, fax) • UICS simplifies this process
Equipment Used • 4 frame grabbers • USB • PXC200 • CX100 • VCE • 4 Ultrasound systems • Aquila • Pie 200 (Classic) • Old Aloka • New Aloka
Images Collected • % IMF – 4-5 images • Ribeye • Rump
Arrival at the CUP Lab™ Images Received Hold Image Loading Interpretation Hold Weights/Matching Cross-Check Reports Association/Breeder
Our Lab Technicians • The best and the brightest applicants • Rigorous training • UGC Certified • Ongoing training and oversight
Centralized Interpretation Advantages • Bias minimized • Interpretations much more consistent • Data reported in standardized electronic format • Added level of integrity due to the unbiased nature of the system
Models History • 1995– ISU Old Aloka • 1997– ISU Classic/Pie 200 • 2001– ILIA Models – Aloka Only • 2007– CUP Lab True Grade IMF models used exclusively
2002 UGC Software Certification Correlation
IMF Model Problems/Challenges • Dark images • Compressed data (not identifying outlier animals) • Model development on one machine one type of cattle • Box size (ROI) • New frame grabbers and ultrasound machines (PXC200, New Aloka, etc.)
New IMF Model R & D • 2005 our project began to improve models • Sought out highly recognized medical ultrasound expert & software developer • Consulted with respected statistician from ISU to design models
Data collection • 3 types of scanners with 2 frame grabbers each • Scanned within one week of harvest • Angus & X-bred feedlot steers and heifers • 24 hours post-slaughter ribeye slivers were collected and EE analysis was conducted at Iowa State University Meat Lab
Results • Resulting models were tested for fit against multiple systems • Mixed results
Additional Data • Scanned more cattle • Multiple scanners incorporated
Results • New models were just as accurate as the first attempt models (error) • However - more robust IMF calculations across multiple systems • Preliminary research was submitted to UGC Statistical Subcommittee for evaluation
UGC Certification • 76 animal were scanned at 2 Iowa feedlots fall of 2006 • Group 1 - 40 crossbred steers • Group 2 - 36 primarily Angus steers • Ether Extract and our IMF Interpretations submitted to UGC • Statistics were reviewed by UGC Statistical Subcommittee
UGC CUP Software Certification Winter 2006 Overall Statistics
Percent Intramuscular Fat Prediction Models • Dramatic improvement in spread • Lower Standard Error of Prediction • Higher Rank Correlation • Improved Region of Interest (ROI) • Higher Correlation with EE %IMF • USDA Quality Grade Correlation
2007 IMF Models • Evaluate the new USB frame grabber on the Aquila, Old and New Aloka, and Pie 200 (Classic) at 5 FPS for all traits • UGC evaluated data from 46 steers • Same procedures as 2006