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Cattle Boards
Artificial Insemination (AI) for Cattle
Timed AI most recent trends?
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<blockquote data-quote="wbvs58" data-source="post: 1849221" data-attributes="member: 16453"><p>I would think that the aim of the gnrh would be to try to stimulate the ovaries into a bit of action in this situation. The FSH (follicle stimulating hormone) as the name implies stimulates the follicles to develop so it would be hoping that it just gets things going. Obviously the condition of the cow, age and feed are all important to them cycling and drugs will rarely overpower the environmental factors.</p><p>I do not use any gnrh myself. It became the go to hormone when they stopped you from using Oestrodiol. Here we can still use it on beef cattle except if we want them to be eligible for the EU market. We can't use it on dairy cattle. When I put the cidr in mine get a shot of Oestrodiol and any that are not in season at 48hrs after the PGwill get another small dose and they will be reliably on heat the following morning.</p><p>As far as I know or can remember cidrs came out to get anoestrus dairy cows to come in season and I think the other uses for synchronisation developed from there.</p><p></p><p>Ken</p></blockquote><p></p>
[QUOTE="wbvs58, post: 1849221, member: 16453"] I would think that the aim of the gnrh would be to try to stimulate the ovaries into a bit of action in this situation. The FSH (follicle stimulating hormone) as the name implies stimulates the follicles to develop so it would be hoping that it just gets things going. Obviously the condition of the cow, age and feed are all important to them cycling and drugs will rarely overpower the environmental factors. I do not use any gnrh myself. It became the go to hormone when they stopped you from using Oestrodiol. Here we can still use it on beef cattle except if we want them to be eligible for the EU market. We can't use it on dairy cattle. When I put the cidr in mine get a shot of Oestrodiol and any that are not in season at 48hrs after the PGwill get another small dose and they will be reliably on heat the following morning. As far as I know or can remember cidrs came out to get anoestrus dairy cows to come in season and I think the other uses for synchronisation developed from there. Ken [/QUOTE]
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