With the variations of what is considered normal gestation length, determining premature is pretty hard. We had one 17 days before the "expected" birth date, she was slow to get up so I tubed her with packaged cholcotrum, gave her a shot of selenium and the little turd kicked the crap out of me trying to get away. She was alwasy a little smaller then all of the other calves but she only weighed 45 lbs at birth, weaned at 380 lbs at 179 days.
dun