I was late in locating a newborn calf for various reasons and when I finally found the calf I noticed that the flies had gotten to him. As a result he has lost quite a bit of hair along his back and the skin appears to be almost raw looking. I have had this happen once before with a calf born during the hot summer and I didn't have much success in getting the hair to grow back. The calf runs and jumps around and acts like he feels pretty good otherwise. I just wondered if anyone here has a good method of treatment to get his hair to grow back other than just spraying for the flies and keeping the area clean?