calf~ weepy eyes~ droopy ears

I have posted this before. Scours= pnuemonia
The reason the calves looked thin from the get they had a low grade respitory problem going on when you got them. Any more if a calf scours I treat it for pnuemonia right away. Does it work? Yes
Sometimes a problem can flare up over night. Other times it may take weeks in surfacing with more noticable signs. The more you work around calves over the yrs, you develop a eye to seeing these problems.
In your case the vet sold you the high priced meds , but you know its going to work .
Bob