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Cattle Boards
Breeding / Calving Issues
When to Lute heifer
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<blockquote data-quote="Katpau" data-source="post: 1508666" data-attributes="member: 9933"><p>At 15 months of age and with a bull for two months I would be greatly surprised if even a heifer in poor condition were not pregnant. Of course if her condition is really that bad you may also have trouble getting her to breed. I once had a barely 13 month old heifer give birth to a full term calf. She would have just turned 4 months old when bred and the only bull around weighed 2300 pounds, so a big bull and a small heifer won't stop one from getting pregnant if she is cycling. I would definitely lute her. I assume any pregnancy would be less than 4 months along? At 120 days gestation, progesterone is made by the placenta, so a shot of prostaglandin like Lutalayse will usually no longer terminate a pregnancy.</p></blockquote><p></p>
[QUOTE="Katpau, post: 1508666, member: 9933"] At 15 months of age and with a bull for two months I would be greatly surprised if even a heifer in poor condition were not pregnant. Of course if her condition is really that bad you may also have trouble getting her to breed. I once had a barely 13 month old heifer give birth to a full term calf. She would have just turned 4 months old when bred and the only bull around weighed 2300 pounds, so a big bull and a small heifer won't stop one from getting pregnant if she is cycling. I would definitely lute her. I assume any pregnancy would be less than 4 months along? At 120 days gestation, progesterone is made by the placenta, so a shot of prostaglandin like Lutalayse will usually no longer terminate a pregnancy. [/QUOTE]
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