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Anonymous
Our heifers are starting to make us nervous. This year we have had 2 heifers "hold" their calves untl they finally gave birth (assisted-hard) to very large calves. (Need to check the weights - one born dead, one alive - probably close to 100 lbs). The dead one, most likely died in the process of being born, before it could be pulled. The other will hopefully be OK. We have never had this happen before in several years of calving heifers. These heifers' mothers, maternal & paternal half sisters have had no problems. The heifers (angus) were A.I. bred to very light birth weight angus bulls and are larger heifers-both weighing over 930 lbs at yearling and calved near 22 & 23 months of age. It has been a colder winter than years past, which I heard can affect gestation. The gestation periods were 295 & 299. We did turn out the clean up bull (calving ease angus) for the next cycle, so such large calves should not be that early. Our typical birth weights on our other heifers have ranged from 56-71 lbs. Cows 58-85 lbs. With our largest calf ever at 91 lbs (from a cow). Another heifers calf was dead in the morning (she had it during the night, but he was not unusually large nor was it horribly cold & wet-just a freak thing I guess). Relief is in sight - only 2 are left to calve. Has anyone else had unusual problems or any suggestions? No, we do not pelvic measure. The heifers were 6.5 & nearly 8 frame score.
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