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Cattle Boards
Artificial Insemination (AI) for Cattle
When to breed? - sexed semen on natural heat.
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<blockquote data-quote="simme" data-source="post: 1746300" data-attributes="member: 40418"><p>I use heat detection stickers and observe 2 or 3 times a day. If I see a cow stand and the sticker is barely rubbed, I figure she has just started standing. If it is partially rubbed or completely rubbed, I make a guess about how long she might have been standing based on activity and amount of rubbing. If it is 2 pm and the sticker is completely rubbed off, I would be inclined to breed that evening. If it is barely rubbed, then the next morning. If it is completely rubbed off at 7 am and the cow is no longer standing and was not observed standing or rubbed late the previous pm, then would probably breed that morning. No doubt, there is an ideal window. But with some detection, stickers and maybe GNRH, the acceptable window is probably wide enough to cover most of them.</p><p></p><p>I have never used sexed semen. No experience there.</p></blockquote><p></p>
[QUOTE="simme, post: 1746300, member: 40418"] I use heat detection stickers and observe 2 or 3 times a day. If I see a cow stand and the sticker is barely rubbed, I figure she has just started standing. If it is partially rubbed or completely rubbed, I make a guess about how long she might have been standing based on activity and amount of rubbing. If it is 2 pm and the sticker is completely rubbed off, I would be inclined to breed that evening. If it is barely rubbed, then the next morning. If it is completely rubbed off at 7 am and the cow is no longer standing and was not observed standing or rubbed late the previous pm, then would probably breed that morning. No doubt, there is an ideal window. But with some detection, stickers and maybe GNRH, the acceptable window is probably wide enough to cover most of them. I have never used sexed semen. No experience there. [/QUOTE]
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Artificial Insemination (AI) for Cattle
When to breed? - sexed semen on natural heat.
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