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<blockquote data-quote="bandit80" data-source="post: 515849" data-attributes="member: 7956"><p>I have used CIDRs extensively the last three years on my registered cows, and last two years on my heifers. I have had great success with them. I use the timed AI protocol for my heifers, and the last two years I have been able to have 15 out of 18 heifers conceive through the timed AI. This is above the average, and I suspect the average will catch up with me at some point, but it is what it is. Of the three heifers that did not conceive, they all had their calves on the next cycle, being bull bred. That is approximately 3 weeks after the AI due date, the other three calved. </p><p></p><p>I have not had near the success with conception rates with my cows, but there are many unseen benefits from getting yours cows synchronized. The last three years, I have use the CIDRS and timed AI on 69 head. I have gotten 32 head of AI calves the last three years. Now this is below 50%, but as with the heifers, I get a huge number of calves in about 3 weeks after the AI due date. Therefore, it appears the cows all respond to the CIDR, but just don't settle to the AI. It has helped me have almost 80% of my calves in the first 3 weeks of calving season, and be essentially done by week 6.</p><p></p><p>If you are using the CIDR and a timed AI, you will have about $35-40 wrapped up in the cost of the CIDR, drugs, and the semen. It has been cost effective for me because it leads to improved genetics on bulls and replacement heifers through AI, and a bigger and more uniform calf crop come weaning.</p></blockquote><p></p>
[QUOTE="bandit80, post: 515849, member: 7956"] I have used CIDRs extensively the last three years on my registered cows, and last two years on my heifers. I have had great success with them. I use the timed AI protocol for my heifers, and the last two years I have been able to have 15 out of 18 heifers conceive through the timed AI. This is above the average, and I suspect the average will catch up with me at some point, but it is what it is. Of the three heifers that did not conceive, they all had their calves on the next cycle, being bull bred. That is approximately 3 weeks after the AI due date, the other three calved. I have not had near the success with conception rates with my cows, but there are many unseen benefits from getting yours cows synchronized. The last three years, I have use the CIDRS and timed AI on 69 head. I have gotten 32 head of AI calves the last three years. Now this is below 50%, but as with the heifers, I get a huge number of calves in about 3 weeks after the AI due date. Therefore, it appears the cows all respond to the CIDR, but just don't settle to the AI. It has helped me have almost 80% of my calves in the first 3 weeks of calving season, and be essentially done by week 6. If you are using the CIDR and a timed AI, you will have about $35-40 wrapped up in the cost of the CIDR, drugs, and the semen. It has been cost effective for me because it leads to improved genetics on bulls and replacement heifers through AI, and a bigger and more uniform calf crop come weaning. [/QUOTE]
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