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<blockquote data-quote="cherokeeruby" data-source="post: 83394" data-attributes="member: 199"><p>Since you are dealing with a lot less semen with AI vs. natural service timing the AIing doesn't really help. Seems like we always got more bull calves with AI. If you AI them right before they go out of standing heat you chances of heifers will improve but how do you know when they are about to go out of standing heat. We are dealing with Brahmans so they have a much shorter standing heat. What we would do is watch her, note how long she was in standing heat and then time the AIing on the next cycle to try to catch her at the tail end of standing heat. We never used any shots to synchronize heat always just natural heats.</p><p></p><p>But toward the end of our experience with AI we decided to just AI the cows we would not mind having bulls out of since we were getting more bulls than heifers.</p></blockquote><p></p>
[QUOTE="cherokeeruby, post: 83394, member: 199"] Since you are dealing with a lot less semen with AI vs. natural service timing the AIing doesn't really help. Seems like we always got more bull calves with AI. If you AI them right before they go out of standing heat you chances of heifers will improve but how do you know when they are about to go out of standing heat. We are dealing with Brahmans so they have a much shorter standing heat. What we would do is watch her, note how long she was in standing heat and then time the AIing on the next cycle to try to catch her at the tail end of standing heat. We never used any shots to synchronize heat always just natural heats. But toward the end of our experience with AI we decided to just AI the cows we would not mind having bulls out of since we were getting more bulls than heifers. [/QUOTE]
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