|Committee on Livestock Approves New Standard on Prediction Equations and Models
Devices that evaluate the variables used to predict carcass composition in pigs and cattle were introduced about 15 years ago, but there has been little standardization regarding how such instruments work or what tolerances are set for each. This lack of standardization made it difficult for government agencies to evaluate new devices as they were developed.
In order to fill this need for a universally accepted consistency of evaluation devices, Committee F10 on Livestock, Meat and Poultry Evaluation Systems has developed a standard for correctly using prediction equations or models with evaluation devices. This new standard, F 2340, Specification for Developing and Validating Prediction Equations or Models Used in Connection with Livestock, Meat, and Poultry Evaluation Devices or Systems to Determine Value, is under the jurisdiction of Subcommittee F10.40 on Predictive Accuracy.
According to David Meisinger, assistant vice president of educational service, National Pork Board, F 2340 will be useful to evaluators when working with a number of instruments, including optical probe, ultrasound or vision imaging technology. There are also many new technologies being developed for measuring or estimating meat quality and composition, says Meisinger, The standard is generic and can hopefully be utilized for future technologies. These standards address the instrument, the users, and the use of the collected data in regression equations for prediction.
Interested parties are invited to contribute to future versions of F 2340. This standard is dynamic, says Meisinger. Not only are new devices being developed, but there is also use in other species. Much of the early attention was given to pigs because they are currently measured for more traits. However, there is a need to apply new knowledge and findings to the current standards to keep them fresh.
For further technical information, contact David Meisinger, National Pork Board, Des Moines, Iowa (phone: 515/223-2767). Committee F10 on Livestock, Meat and Poultry Evaluation Systems meets Oct. 6-8 during the October Committee Week in Washington, D.C. For membership or meeting details, contact Jim Olshefsky, ASTM International (phone: 610/832-9714). //
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