Have a 14 month old club calf that has blood in his stool for the last 2 1/2 days. He has been wormed within the last 6 months and I see no sign of parasites in his stool. Initially there was very little blood, but yesterday and this morning there was significant puddles. This morning he was off his feed. He's our 1st 4H steer and our project leader hasn't been much help. Suggestions welcomed.