the invention relates to a conveyor to convey animal products in an agricultural business , as well as a drive unit for such a conveyor . furthermore , the invention relates to a method to convey animal products in an agricultural business by means of a conveyor . the conveyor comprises a conveyor belt , a belt drive for driving the conveyor belt in a minimum of one conveying direction , and a measuring unit that is designed and arranged to determine a load rate of the conveyor belt , wherein the load rate of the conveyor belt is a power value of the belt drive and / or a bearing reaction of a bearing in the belt drive .