I am just posting this to c ur point of view, do you think bread is good or bad for horses?? I kno a horse that died from eating a loaf of bread but on the otha hand one of my friends uncles feeds his endurance horses a loaf a day!!
I highly doubt it was the actual bread itself that killed the horse. I would assume it was the way he must have consumed it.
When I lived in Europe, bread was a huge treat for horses. No such thing as giving them carrots. I guarantee you NO horse ever died from eating bread.