Hungry cattle come running when they hear the sound of that tractor or feed truck. And their behavior at feeding time can make it dangerous for them and a nuisance for cattlemen. Mike Koenighain developed an electric-fence-like device that keeps the cattle away from the front tires of his tractor when he’s feeding silage. He placed aluminum cable inside 5 feet of plastic tubing that is used for insulation. The electricity-carrying cable extends 36 inches over and 10 inches in front of both front tires. He mounted the device onto the weightbracket with hose clamps. The electricity is delivered through a small, electric- fence charger mounted on the tractor. The cost of the charger was $45. Koenighain says the device has been in use on his operation for seven years.