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Artificial Insemination (AI) for Cattle
The results are in on SAV America 8018
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<blockquote data-quote="Katpau" data-source="post: 1592294" data-attributes="member: 9933"><p>Your AI success rate is very acceptable. Unfortunately, 100% is only going to happen when you breed a small number of cows and everything goes perfect. It is mostly luck. We use timed AI, but do add in some heat detection here. Cows are synchronized and then bred 12 hours after standing heat is observed. We have had years where conception was 100% (only 13 cows AI'd that year) and years where we only settled 40% by AI. Protocols were the same, but results have varied. We usually only AI the top cows in the herd, so most times that is less than 20 cows. Over the last 9 years our AI success rate was 60.9% with one AI tech and 70.7% with another. Our more successful tech spent 40 years working with dairy cows and is good, but he's in his late 80's now and the last 2 years he seems to struggle more on the cows he breeds later in the day. </p><p></p><p>I don't really mean to rain on your parade, but I am curious why America is exciting to you? I am really struggling to find something about him that would make me want to use him. I know he sold in February for the highest ever recorded price for a beef bull, but his papers are still in the original owner's name. That makes that price suspicious to me. I can't find a single photo of him beyond those taken when he was still just a calf. I am not usually one to gamble on an unproven bull, and this one seems especially risky. </p><p></p><p>He was, according to hype, the heaviest calf weaned at Schaff, but has no genomic profile to back up his EPDs. The heaviest bull ever weaned on this ranch, produced average weaning weights in his offspring, just as his genomics predicted. It is common knowledge that many bulls producing exceptional weaning weights in their offspring, were quite average in their own weaning weights and it is even more common for bulls with exceptional weaning weights to have disappointing weaning weights in their offspring. </p><p></p><p>The owners spent $63 to run the genetic condition bundle and parentage verification. </p><p>For $55 they could have had had both those plus a genetic profile. The only reason I can think of for spending more for less, is fear it would probably lower his $W number. Even without those genomics, America is not impressive in carcass characteristics and scores in the lowest 75% for marbling, which doesn't bother me at all, but is an important trait to many buyers of terminal bulls. His EPD for heifer pregnancy is in the bottom 90%, his EPD for calving ease in his daughters is in the bottom 85%, his $M for all maternal qualities is in the bottom 85% and that unproven weaning weight number plus the resultant high $W are the only things that I see as impressive. If he ends up breeding like those numbers predict he could be a good terminal bull for producers, who don't retain ownership, but a poor choice for making replacements and for those who sell their cattle on the grid. If I had semen on him, the first thing I would do, is use it to run a genomic profile. Although it might hurt his WW & YW, I would think the odds are that it might improve some other numbers that are more important to me, since my AI is geared towards making replacements.</p></blockquote><p></p>
[QUOTE="Katpau, post: 1592294, member: 9933"] Your AI success rate is very acceptable. Unfortunately, 100% is only going to happen when you breed a small number of cows and everything goes perfect. It is mostly luck. We use timed AI, but do add in some heat detection here. Cows are synchronized and then bred 12 hours after standing heat is observed. We have had years where conception was 100% (only 13 cows AI’d that year) and years where we only settled 40% by AI. Protocols were the same, but results have varied. We usually only AI the top cows in the herd, so most times that is less than 20 cows. Over the last 9 years our AI success rate was 60.9% with one AI tech and 70.7% with another. Our more successful tech spent 40 years working with dairy cows and is good, but he’s in his late 80’s now and the last 2 years he seems to struggle more on the cows he breeds later in the day. I don’t really mean to rain on your parade, but I am curious why America is exciting to you? I am really struggling to find something about him that would make me want to use him. I know he sold in February for the highest ever recorded price for a beef bull, but his papers are still in the original owner’s name. That makes that price suspicious to me. I can’t find a single photo of him beyond those taken when he was still just a calf. I am not usually one to gamble on an unproven bull, and this one seems especially risky. He was, according to hype, the heaviest calf weaned at Schaff, but has no genomic profile to back up his EPDs. The heaviest bull ever weaned on this ranch, produced average weaning weights in his offspring, just as his genomics predicted. It is common knowledge that many bulls producing exceptional weaning weights in their offspring, were quite average in their own weaning weights and it is even more common for bulls with exceptional weaning weights to have disappointing weaning weights in their offspring. The owners spent $63 to run the genetic condition bundle and parentage verification. For $55 they could have had had both those plus a genetic profile. The only reason I can think of for spending more for less, is fear it would probably lower his $W number. Even without those genomics, America is not impressive in carcass characteristics and scores in the lowest 75% for marbling, which doesn’t bother me at all, but is an important trait to many buyers of terminal bulls. His EPD for heifer pregnancy is in the bottom 90%, his EPD for calving ease in his daughters is in the bottom 85%, his $M for all maternal qualities is in the bottom 85% and that unproven weaning weight number plus the resultant high $W are the only things that I see as impressive. If he ends up breeding like those numbers predict he could be a good terminal bull for producers, who don’t retain ownership, but a poor choice for making replacements and for those who sell their cattle on the grid. If I had semen on him, the first thing I would do, is use it to run a genomic profile. Although it might hurt his WW & YW, I would think the odds are that it might improve some other numbers that are more important to me, since my AI is geared towards making replacements. [/QUOTE]
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