Just lost a calf and was wondering if I could do anything better next time. Bought a new born(5 day old) holstein, lasted about 3 days. 2nd day developed scours, treaeted with scour pill and pennicilin. 3rd day gave same, but after shot lasted 5 minutes then croaked. Gave shot in neck muscle, could this be the problem? If so, where would be the proper placefor injection site?