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Breeding / Calving Issues
Embryo death rate
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<blockquote data-quote="Nesikep" data-source="post: 1442773" data-attributes="member: 9096"><p>I have absolutely no experience with embryo calves, but I will say that all my late-term abortions I've had here have been from cow families that have had more than their share of twins, and they also often calf a little ahead of what I consider herd average gestation times... I have a pretty small sample size as well, but it's enough to notice a distinct pattern... I have had these cows for 25 years, so I still have some decent data</p><p></p><p>Mooca cow family, has had about 6 sets of twins out of 100ish births, and 4 or 5 late term abortions (from 3 cows), always have shorter gestation.</p><p>Zeta cow family has had 1 set of twins and 1 late term abortion. Always a little shorter gestation.</p><p>Josie family, no twins, no abortions, usually cooks them longer than average</p><p>Mona family, no twins, no abortions, longer gestation</p><p>Auntie family, 2 sets of twins, no abortions, about average gestation</p><p>Lucy family, 1 pair of twins, 1 abortion, shorter gestation.</p><p>All the other families have gone extinct.</p></blockquote><p></p>
[QUOTE="Nesikep, post: 1442773, member: 9096"] I have absolutely no experience with embryo calves, but I will say that all my late-term abortions I've had here have been from cow families that have had more than their share of twins, and they also often calf a little ahead of what I consider herd average gestation times... I have a pretty small sample size as well, but it's enough to notice a distinct pattern... I have had these cows for 25 years, so I still have some decent data Mooca cow family, has had about 6 sets of twins out of 100ish births, and 4 or 5 late term abortions (from 3 cows), always have shorter gestation. Zeta cow family has had 1 set of twins and 1 late term abortion. Always a little shorter gestation. Josie family, no twins, no abortions, usually cooks them longer than average Mona family, no twins, no abortions, longer gestation Auntie family, 2 sets of twins, no abortions, about average gestation Lucy family, 1 pair of twins, 1 abortion, shorter gestation. All the other families have gone extinct. [/QUOTE]
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