Abstract: A method is described comprising stunning a ruminant at a packing plant, and thereafter measuring tissue characteristics of the ruminant using a tissue imaging and analysis device prior to processing the ruminant to a carcass. Working embodiments of the method have used an ultrasound tissue imaging and analysis device, although other analyses also can be performed. The ultrasound analysis can be performed by one operator, or plural operators. For example, if the device is an ultrasound tissue analysis device, the step of conveying may first comprise conveying the ruminant to a position adjacent a first operator. The first operator applies an ultrasound image enhancing fluid to the ruminant's hide, and a second operator places the ultrasound tissue analysis device adjacent the enhancing fluid and performs ultrasound tissue imaging and analysis on the ruminant.

Abstract: A highly automated method and system for providing individual animal electronic identification, measurement and value based management of cattle in a large cattle feedlot. Through the use of (1) a computer system integrated with (2) automatic individual animal identification (3) multiple measurement and remeasurement systems with automatic data input and (4) a cattle handling and sorting system, animals are individually (a) identified and (b) measured by weight, external dimensions and characteristics of internal body tissue. With this information together with animal physiological characteristics and historical data, the computer system calculates the optimum (c) slaughter weight, (d) economic end point and (e) marketing date for shipment to a packing plant. After measurement, individual animals are (f) sorted by direction of the computer in response to calculations from the measurements.

Abstract: A recycling system particularly useful for using, sorting and reusing large quantities of animal identification tags for use by producers, feedlots and packing plants is described. In one aspect of the invention, a plurality of unsorted, previously used and cleaned identification tags are passed through a tag aligner that aligns the tags in series. The aligned tags are fed to a tag sorter that includes a plurality of sorting bins for storing the sorted tags. A tag reader reads the identification tags and passes identification information stored on the tags to a controller. The controller analyzes the identification information from the tags and determines in which one of the sorting bins each tag should be stored. When each tag is adjacent the proper sorting bin, the controller signals the sorter to eject the tag into such bin. After sorting, the tags are redistributed to their original users for reuse.