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Cattle Boards
Artificial Insemination (AI) for Cattle
best time to breed.
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<blockquote data-quote="Bright Raven" data-source="post: 1418429" data-attributes="member: 27490"><p>I think you summed that up!</p><p></p><p>No matter how simple the concept when you are putting it into action, it can get confusing.</p><p></p><p>The cornerstone of my AI breeding program is: breed in a window between 6 to 8 hours following when you observe a standing heat. That is based on the concept that you want the spermatozoa to undergo capacitation in time to be capable of fertilizing the egg when it releases from the follicle. The Select Sires manual shows that window as being 4 to 12 hours. I prefer to narrow it down but both should result in good conception.</p><p></p><p>Regarding your questions:</p><p><strong></strong></p><p><strong>1. My question is what if she went into standing say 10:00 pm.[<u>I assume you did not observe this stand</u>] You check that morning, then breed her the next night. That would be getting close to 20 hours. Would you miss her?</strong></p><p><strong></strong></p><p><strong>2. And also what would you do to ones you find standing at the noon check? I assume breed them that night</strong>.</p><p></p><p>1. You go out at daybreak and find a cow/heifer with the chalk mark gone (patch rubbed) and her tail head shows signs of being ridden. I breed about 2 pm that day. </p><p></p><p>2. Standing at noon. Breed 6 pm.</p></blockquote><p></p>
[QUOTE="Bright Raven, post: 1418429, member: 27490"] I think you summed that up! No matter how simple the concept when you are putting it into action, it can get confusing. The cornerstone of my AI breeding program is: breed in a window between 6 to 8 hours following when you observe a standing heat. That is based on the concept that you want the spermatozoa to undergo capacitation in time to be capable of fertilizing the egg when it releases from the follicle. The Select Sires manual shows that window as being 4 to 12 hours. I prefer to narrow it down but both should result in good conception. Regarding your questions: [b] 1. My question is what if she went into standing say 10:00 pm.[[u]I assume you did not observe this stand[/u]] You check that morning, then breed her the next night. That would be getting close to 20 hours. Would you miss her? 2. And also what would you do to ones you find standing at the noon check? I assume breed them that night[/b]. 1. You go out at daybreak and find a cow/heifer with the chalk mark gone (patch rubbed) and her tail head shows signs of being ridden. I breed about 2 pm that day. 2. Standing at noon. Breed 6 pm. [/QUOTE]
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