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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: 1849220" data-attributes="member: 16453"><p>I have never heard of eggs being stale Jeanne but anything is possible I guess. In the early stages of oestrus there will be more than one follicle developing but in the normal situation of a single birth only one continues to develop and the others regress. I don't think there would be much risk of stale eggs as the chosen one does not really develop until they get into oestrus and the others are not wasted it may be their turn next time.</p><p>I know when I get mine in to put the cidrs in I keep an eagle eye out for any that may just be starting to show early signs of oestrus. I don't know how quickly the cidr will elevate progesterone levels to suppress one on the verge of oestrus but I often hold one over to see if it comes on heat to inseminate or put the cidr in with the next batch. I also am watching my cows closely for a few weeks leading up to putting the cidrs in and any that I see showing signs of oestrus I will note so I know when they are due again.</p><p>Anything to do with synchronising is not an exact science on an individual, it is used for convenience and numbers that are relevant is the %age of success so yes there will always be some that miss. What I do know is that the good cows rarely miss.</p><p></p><p>Ken</p></blockquote><p></p>
[QUOTE="wbvs58, post: 1849220, member: 16453"] I have never heard of eggs being stale Jeanne but anything is possible I guess. In the early stages of oestrus there will be more than one follicle developing but in the normal situation of a single birth only one continues to develop and the others regress. I don't think there would be much risk of stale eggs as the chosen one does not really develop until they get into oestrus and the others are not wasted it may be their turn next time. I know when I get mine in to put the cidrs in I keep an eagle eye out for any that may just be starting to show early signs of oestrus. I don't know how quickly the cidr will elevate progesterone levels to suppress one on the verge of oestrus but I often hold one over to see if it comes on heat to inseminate or put the cidr in with the next batch. I also am watching my cows closely for a few weeks leading up to putting the cidrs in and any that I see showing signs of oestrus I will note so I know when they are due again. Anything to do with synchronising is not an exact science on an individual, it is used for convenience and numbers that are relevant is the %age of success so yes there will always be some that miss. What I do know is that the good cows rarely miss. Ken [/QUOTE]
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