Iowa State Daily (February 1, 2012)

ContentsRomney wins Florida primaryCyclone brothers in bloodArtist creates Lego piecesSeminars bring in big names from fieldIowa State squeaks by KSUMake a Super Bowl sandwich stadiumThe lost art of manliness

Experience with an Electronic Identification System for Cattle

An electronic identification system involving placement of transponders in rumen boluses was evaluated in thirty feedlot steers. All the devices were retained and remained functional in the steers. Twenty-eight of the devices were recovered at the packing plant. Two of them were lost because of an incomplete understanding that attempts were being made to recover the boluses from rumen contents. Use of rumen boluses is a practical alternative for electronic identification of cattle that is permanent and nearly tamper proof.