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So 50% AI take isn't any good? Read this.
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<blockquote data-quote="djinwa" data-source="post: 818585" data-attributes="member: 8265"><p>I keep hearing about AI being expensive. Yes, it is, but I believe this thread started with a guy with 3 to 5 cows. I would say buying or raising a bull and keeping him around all year for less than 5 cows would be more expensive on a per cow basis. Not to mention that bulls can be a pain. And probably lower quality calves from him than you could get from an AI bull. Better calves alone could offset the cost of AI.</p><p></p><p>Ruark, you asked about the meaning of timed AI vs breeding on heats. The timed AI is when you give hormones to get a group to come into heat at the same time so you don't have to watch individuals to know when they are in heat, and can have the tech come do all at once.</p><p></p><p>"Breeding on heats" means just watching them to see when they are in heat without giving hormones. Takes more time, but if you catch them right, better chance of it sticking than with artificially induced heats.</p><p></p><p>A common reason for failure to conceive is poor heat detection by the herdsman.</p><p></p><p>I am a smalltime amateur, and have had 3 different cows/heifers bred AI 7 times in the last few years. They took on 6 of those. The one time it didn't take was my fault, as I had a single cow and misread her heat, and called the tech too early. If you're going to observe for natural heats, you need to understand the following graph. Note that ovulation doesn't occur until 10 hours after standing heat ends. So there isn't a big hurry to AI when you see them standing. Standing heat means the one in heat will stand still while another mounts her. The one doing the mounting is not necessarily the one in heat.</p><p></p><p></p><p><img src="http://i130.photobucket.com/albums/p242/djinwa/ovulation.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="djinwa, post: 818585, member: 8265"] I keep hearing about AI being expensive. Yes, it is, but I believe this thread started with a guy with 3 to 5 cows. I would say buying or raising a bull and keeping him around all year for less than 5 cows would be more expensive on a per cow basis. Not to mention that bulls can be a pain. And probably lower quality calves from him than you could get from an AI bull. Better calves alone could offset the cost of AI. Ruark, you asked about the meaning of timed AI vs breeding on heats. The timed AI is when you give hormones to get a group to come into heat at the same time so you don’t have to watch individuals to know when they are in heat, and can have the tech come do all at once. “Breeding on heats” means just watching them to see when they are in heat without giving hormones. Takes more time, but if you catch them right, better chance of it sticking than with artificially induced heats. A common reason for failure to conceive is poor heat detection by the herdsman. I am a smalltime amateur, and have had 3 different cows/heifers bred AI 7 times in the last few years. They took on 6 of those. The one time it didn’t take was my fault, as I had a single cow and misread her heat, and called the tech too early. If you’re going to observe for natural heats, you need to understand the following graph. Note that ovulation doesn’t occur until 10 hours after standing heat ends. So there isn’t a big hurry to AI when you see them standing. Standing heat means the one in heat will stand still while another mounts her. The one doing the mounting is not necessarily the one in heat. [img]http://i130.photobucket.com/albums/p242/djinwa/ovulation.jpg[/img] [/QUOTE]
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So 50% AI take isn't any good? Read this.
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