My 18 month old nigerian doe has not gone into heat in 5-6 months. She has never been around a buck so not pregnant. Gave copasure 2 gm x 2 four weeks apart. Ivomec inj. 1cc sc x 2 doses two weeks apart. Added boss to grain daily x 6 weeks now. Poops and pees fine. Still dry flaky skin, crusty cracked on chin, nose and tail with fish tail still present. Cracked areas treated with neosporin oint. x 6 weeks now very little improvement. Have also tried blue-kote. Diet is fresh hay at all times, fresh warm water 3x day ( very cold here now in Maine) grain 4 oz. 3x day little sprinkle of pumkin seeds, alph alpha and 5 ml olive oil each feed. Free loose minerals. Any suggestions?