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Artificial Insemination (AI) for Cattle
Cidr or sponges
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<blockquote data-quote="boondocks" data-source="post: 1528410" data-attributes="member: 20599"><p><a href="https://www.bovine-elite.com/NewsProtocols.pdf" target="_blank">https://www.bovine-elite.com/NewsProtocols.pdf</a></p><p> See pp3-4 for Timed AI ("TAI") protocols. Summary: insert CIDR and inject 2cc GNRH on Day 1. One week later, remove CIDR and inject 5cc Lute ("PG"). Then, at X* or Y** hours later, perform AI and inject another 2cc GNRH.</p><p>*For Cows, X =60 to 66 hours.(see p3, right column, "7 day CO-Synch+CIDR-Cows")</p><p>**For Heifers, Y=52 to 56 hours. (see p4, left column, "CO-Synch+CIDR-Heifers).</p><p>Note: we have a tech come also, so we just do heifers and cows at the same time. We try to do the AI step about 58 hrs after the second step. This time of year (days getting short), I'd see when your tech can come and then back everything up from there. The hours lapsed between the second and third step are important. In terms of the 1st and second steps, we usually do them Sat am to Sat am but we don't worry about getting it done at exactly the same hour. </p><p>We've had, at times, excellent results with this protocol (close to 100% on first try last summer) but are running 55% on first try this summer which is a bummer. And I can never figure out what the $%! accounts for the wild swings....we did have a different tech last summer, and different sires.</p></blockquote><p></p>
[QUOTE="boondocks, post: 1528410, member: 20599"] [url=https://www.bovine-elite.com/NewsProtocols.pdf]https://www.bovine-elite.com/NewsProtocols.pdf[/url] See pp3-4 for Timed AI ("TAI") protocols. Summary: insert CIDR and inject 2cc GNRH on Day 1. One week later, remove CIDR and inject 5cc Lute ("PG"). Then, at X* or Y** hours later, perform AI and inject another 2cc GNRH. *For Cows, X =60 to 66 hours.(see p3, right column, "7 day CO-Synch+CIDR-Cows") **For Heifers, Y=52 to 56 hours. (see p4, left column, "CO-Synch+CIDR-Heifers). Note: we have a tech come also, so we just do heifers and cows at the same time. We try to do the AI step about 58 hrs after the second step. This time of year (days getting short), I'd see when your tech can come and then back everything up from there. The hours lapsed between the second and third step are important. In terms of the 1st and second steps, we usually do them Sat am to Sat am but we don't worry about getting it done at exactly the same hour. We've had, at times, excellent results with this protocol (close to 100% on first try last summer) but are running 55% on first try this summer which is a bummer. And I can never figure out what the $%! accounts for the wild swings....we did have a different tech last summer, and different sires. [/QUOTE]
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