Originally Posted by minstrel
I keep his feed to being mainly chaff, in a similar ratio to his previous feed, but cut out the oats and barley as he's getting more from the grass now. I keep him on the speedibeet because it's high in fibre-based energy, as well as easy on his digestive system (he can be colicky) and balance this with the wheat bran, which being high in phosphorus balances out the high calcium levels in beet pulp,
Interested if you've ever tested/treated him for ulcers? Being a 'hard keeper' & 'colicky' and getting a fair bit of grain, there's a fair chance that could be his problem. Good that he's off the grain IMO & especially considering colic, if/when he needs more calories, I'd consider a healthier, low starch alternative to grain. Such as more beet pulp or such.
Re the wheat bran, the grain probably would have done it for balancing an otherwise too high Ca diet. While beet pulp is reasonably high Ca(not as high as alfalfa for eg.), I wouldn't think you'd need the wheat to balance just half a cup. Have you ever done a diet analysis?