The national peak body for sheep producers (Australia) is worried about a proposal to mandate the use of electronic ear tags. A group of farmers from eastern Victoria wants electonic RFID ear tags to be compulsory, to aid tracking animals in case of a disease outbreak.The proposal will be voted on tomorrow at the Victorian Farmers Federation's annual conference, to decide whether it should be official policy. But Ron Cullins, from the Sheep Meat Council, says the current system which tracks mobs works fine.