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Breeding / Calving Issues
Just Starting Out: How does AI work?
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<blockquote data-quote="shortybreeder" data-source="post: 1131975" data-attributes="member: 21626"><p>1. If it is stored in liquid nitrogen, it will keep for as long as you keep the tank full. If taken out of the liquid nitrogen and not put back in right away (such as holding out longer than to move from shipper to tank) then it will last probably 10-15 minutes I believe...</p><p>2. Don't wait until the cows are in heat before you order semen. I figure 1.5 units of semen per cow of whatever bull I REALLY like, and then 1 unit per cow of the "back up" semen for the cows that don't catch on right away. Typically the "back up" bull is a terminal sire. Order the semen at least 3 weeks before you plan to need it, and even earlier if it is a really hot sire that may be in high demand. For us we have to tell our A.I. Tech what we want and then it comes the 2nd Tuesday after we order it. I'm sure it would be faster to order it online or by calling the distributor, but this way we don't pay for shipping and he takes care of putting it in LN2 right away. There are multiple signs of heat, most of which require you to watch the animals for at least 30 min morning and night. You can also go the route of Timed A.I.</p><p>3. I agree with dun, it should be 75-80% for an experienced tech.</p><p>I strongly suggest taking an A.I. course, because it will only take 2 days out of your time, and can greatly improve your success rates. Also, just saving a few units of semen and a few CIDR's and PG/GnRH shots will pay for the cost of the class quite rapidly.</p></blockquote><p></p>
[QUOTE="shortybreeder, post: 1131975, member: 21626"] 1. If it is stored in liquid nitrogen, it will keep for as long as you keep the tank full. If taken out of the liquid nitrogen and not put back in right away (such as holding out longer than to move from shipper to tank) then it will last probably 10-15 minutes I believe... 2. Don't wait until the cows are in heat before you order semen. I figure 1.5 units of semen per cow of whatever bull I REALLY like, and then 1 unit per cow of the "back up" semen for the cows that don't catch on right away. Typically the "back up" bull is a terminal sire. Order the semen at least 3 weeks before you plan to need it, and even earlier if it is a really hot sire that may be in high demand. For us we have to tell our A.I. Tech what we want and then it comes the 2nd Tuesday after we order it. I'm sure it would be faster to order it online or by calling the distributor, but this way we don't pay for shipping and he takes care of putting it in LN2 right away. There are multiple signs of heat, most of which require you to watch the animals for at least 30 min morning and night. You can also go the route of Timed A.I. 3. I agree with dun, it should be 75-80% for an experienced tech. I strongly suggest taking an A.I. course, because it will only take 2 days out of your time, and can greatly improve your success rates. Also, just saving a few units of semen and a few CIDR's and PG/GnRH shots will pay for the cost of the class quite rapidly. [/QUOTE]
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