Hi Mic I had this experience last week when I went down to Reykjavik to ride with a friend and it turned out that the horse I was gonna ride was in a thin condition (brown gelding) and I pointed that out that "this horse shouldn´t get any thiner to just be able to build more mucles and so on....." we are going toghter in a horse trip this summer 8 day´s long....
Then I saw the mare we was going to take with us in hand.......I mare that has been in my place for two years ago then with a foal by the side.... my gosh! awful if you lay your hands on her side you could feel all ribb´s and tip your finger down between them!! then I honestly turned to him and said "if this mare was in my herd and the animal inspector came to my place I would get a warning" I said and looked him in the eye´s. yes I know she a little bit thin she was when we brought her in from winter pasture ect,ect.... and I said then you just simply have to give her food not just hay when she is in this condition she burns mucle´s not build them I said as I know he do work out a lot and know´s what I´m talking about (Im a former football player and alway´s talk about horses as an athlet to thoose that are working out having diet´s and that mostly turne´s out good) My friend don´t own this mare it´s another person (also a man) when the turned up in the stable my friend simply said hey! Malin don´t think we feed them enough! then the man walked up to my friends dun gelding and said this one is at least very fat I put my hand on the horse and said this is nothing you starw away you ride to build up mucles and with this fat on you will be faster to build him up vs the brown gelding you will have to feed him diffient so he can both build and burn in the same time! Hope it goes well for you Mic This is what I did but I don´t know yet if it worked........ Regards Malin www.kolugil.tk