Patent ID: 6236318
Filing Date: 2001-05-22
Classification: A61D

Abstract:
In a system for identifying a plurality of cattle bred on a livestock farm and detecting an estrus state thereof, a detection/identification apparatus for detecting and identifying any one of cows in the estrus state, comprising:switch means mounted on a caudal part of a corresponding one of the cows in such a manner that it can be operated when a different one of the cows mounts the corresponding cow;an encoder for generating an inherent identification code with respect to said corresponding cow in response to the operation of said switch means;a radio transmitter/receiver circuit for transmitting said inherent identification code from said encoder externally by radio and receiving an external identification code by radio;a decoder for decoding the external identification code received by said radio transmitter/receiver circuit to detect an identification code value therefrom;a comparator for comparing said identification code value from said decoder with a prestored identification code value of said corresponding cow to determine whether the two identification code values are the same; andindication means responsive to an output signal from said comparator for indicating that said identification code value from said decoder is the same as said prestored identification code value.