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Cattle Boards
Artificial Insemination (AI) for Cattle
Which protocol to use?
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<blockquote data-quote="Jeanne - Simme Valley" data-source="post: 1832987" data-attributes="member: 968"><p>No. The shot only works if the cow has a CL. She does not start to develop a CL until so many days after she ovulated. Then, she sluffs the CL a few days before she is going to ovulate. So there is a window before and after ovulation that the shot won't work.</p><p>Obviously, if she already stuffed her CL ready to ovulate, the shot didn't hurt or help, because she was coming in heat any way.</p><p>If she does not have a CL, it is like giving her a shot of saline.</p><p>No reaction, no harm.</p><p>If her body has not started cycling after calving (no CL) she won't respond.</p><p>I'm not sure on the exact number of days before and after.</p></blockquote><p></p>
[QUOTE="Jeanne - Simme Valley, post: 1832987, member: 968"] No. The shot only works if the cow has a CL. She does not start to develop a CL until so many days after she ovulated. Then, she sluffs the CL a few days before she is going to ovulate. So there is a window before and after ovulation that the shot won't work. Obviously, if she already stuffed her CL ready to ovulate, the shot didn't hurt or help, because she was coming in heat any way. If she does not have a CL, it is like giving her a shot of saline. No reaction, no harm. If her body has not started cycling after calving (no CL) she won't respond. I'm not sure on the exact number of days before and after. [/QUOTE]
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Artificial Insemination (AI) for Cattle
Which protocol to use?
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