| 摘要 |
A method and apparatus for providing special food to a selected plurality of animals in a herd which includes providing a distinguishing device on each of said selected plurality of the animals, and providing a supply of foodstuff in an enclosure having a movable barrier which in a position of rest prevents access to that foodstuff supply and is locked in the rest position by a releaseable lock device. The device is so controlled that the barrier is released for animal access to the food only in response to the proximity of any one of the distinguishing devices, so that all of the selected plurality of animals, and only those selected plurality of animals, have access to the supply of foodstuff. A battery powered low electrical consumption control circuit is provided.
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