I have three mules,one gaited mule that is green as a gourd and a pair that will harness(kindof).Eany way i am new to the equine game,mule or horses.I need some advice on what and how much feed.Old timers say 3 ears of corn a day is enough.these mules clearly whant more than that.Others say corn will make them wild?How much hay and how much grain.Eany informed input would be apreciated.