I had a real big slow dumb calf who looked ill, humped up and not moving much. Didn't know if he was just real stupid or ill - wouldn't take a bottle one evening, so gave a shot of Tylan (had been force feeding him and questioned pneumonia). Seems to be doing better and the next evening gave another dose of Tylan. Is this setting him up for scours? Do I need to do anything else? He is now a week old - mom won't let him nurse so I have been feeding him Kent milk replacer, two big bottles a day.