horse illness

Question
i was just wondering if you could shed any light on my problem i had 4 horses in my field 3 cobs and 1 morgan they have all had more hay to eat than they could manage and a good bucket of feed a day  .the 3 cobs look great but the morgan became to loose weight 3 weeks ago so i bought him a  new rug and upped his feed to 2 buckets a day i just thought that that would do it i also gave him another wormer in case it was worms but he still lost weight on thursday this week he became tangled into his rug and a vet was called the vet noticed that he had a blood discharge from his privates .he later died of colic this friday morning he had a few episodes of colic over the last few years and muscle damage for this last year on his rear quarters  since he got himself caught up in his stable  ,the vet has taken a lot of blood tests but i feel awful as people thought that he must have been starved but he always ate more than the two mares put together please could you let me know if you know what is was or has anyone had this problem thankyou from michelle

Answer
Dear Michelle,
             I know how badly you must feel. If he had chronic collic alot upping his food so quickly must have had a bad effect on him. Some horses are born with birth defects, but it seems like all the cases of colic took to much out of him. I am sorry to hear of your loss.
Michelyn