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Breeding / Calving Issues
Correlation, Causation, and Coincidence
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<blockquote data-quote="Nutmegger" data-source="post: 1299669" data-attributes="member: 24691"><p>Happy to share it. </p><p></p><p>Twenty-five calves were noted as "hard pull" and a disproportionate number were from a single calving group, which I attribute to causation - poor bull selection. Five calves were scored "C-section or extreme traction", but from the notes I see that three were C-sections and the other two were "extreme traction". Two were marked "abnormal presentation". (One of those was an induced delivery because of health issues with the heifer. Another was a birth defect.) The balance were scored "no assistance" or "easy pull". </p><p></p><p>Permit me to correct a mistake in my original post: All of the heifers went to summer pasture with a calf, and all of them had a calf at branding time (about a a month after going to summer pasture). Three calves died during the summer, so I was incorrect when I wrote "They all raised a calf". Additionally, two heifers were found to be empty and sold (one baldy, one black), reducing the total set from 225 from 223. In the end we sold 220 calves off of 223 bred heifers.</p><p></p><p>To be sure, we lost a few calves before we went to summer pasture. Of the eight pair of twins, one pair was born dead. That left seven, of which one was grafted to the heifer that delivered dead twins. The other spare twins were grafted to heifers that lost calves. (And we still ending up buying a couple of bums to graft to heifers that lost calves) Of the losses, one drowned in a stream. One was killed by it's angry mother. A few were still-born. One had a birth defect. There didn't seem to be any correlation between calving group and lost calves.</p><p></p><p>Finally, I would be remiss if I didn't point out that I had a couple of really good guys helping with this project. We made it our common goal to send each heifer out with a calf. That doesn't mean it was economic relative to the effort. It may mean that we were foolishly stubborn. Either way, it was fun.</p><p></p><p>I hope this is more clear. Thanks for your interest.</p></blockquote><p></p>
[QUOTE="Nutmegger, post: 1299669, member: 24691"] Happy to share it. Twenty-five calves were noted as "hard pull" and a disproportionate number were from a single calving group, which I attribute to causation - poor bull selection. Five calves were scored "C-section or extreme traction", but from the notes I see that three were C-sections and the other two were "extreme traction". Two were marked "abnormal presentation". (One of those was an induced delivery because of health issues with the heifer. Another was a birth defect.) The balance were scored "no assistance" or "easy pull". Permit me to correct a mistake in my original post: All of the heifers went to summer pasture with a calf, and all of them had a calf at branding time (about a a month after going to summer pasture). Three calves died during the summer, so I was incorrect when I wrote "They all raised a calf". Additionally, two heifers were found to be empty and sold (one baldy, one black), reducing the total set from 225 from 223. In the end we sold 220 calves off of 223 bred heifers. To be sure, we lost a few calves before we went to summer pasture. Of the eight pair of twins, one pair was born dead. That left seven, of which one was grafted to the heifer that delivered dead twins. The other spare twins were grafted to heifers that lost calves. (And we still ending up buying a couple of bums to graft to heifers that lost calves) Of the losses, one drowned in a stream. One was killed by it's angry mother. A few were still-born. One had a birth defect. There didn't seem to be any correlation between calving group and lost calves. Finally, I would be remiss if I didn't point out that I had a couple of really good guys helping with this project. We made it our common goal to send each heifer out with a calf. That doesn't mean it was economic relative to the effort. It may mean that we were foolishly stubborn. Either way, it was fun. I hope this is more clear. Thanks for your interest. [/QUOTE]
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