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Cattle Boards
Artificial Insemination (AI) for Cattle
7 & 7 Synch protocol anyone using it?
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<blockquote data-quote="JKCattle" data-source="post: 1669175" data-attributes="member: 33021"><p>I also spoke with Jordan about using 7&7 on virgin heifers. His group didn't have any data so he wouldn't recommend. I tried it and I wouldn't recommend either. We had 86% adult cows, 40% first calf heifers and 29% virgin heifer preg rate at ultrasound. All were bred on observed heats. Funny thing is we rebred all 2nd time with GnRH and 7 day Lutalyse and got 100% on virgin heifers and 87% on cows / first calf heifers. Didn't even put out a cleanup bull because the ones that didn't settle were on the list anyway. Like 7&7 except for virgin heifers</p></blockquote><p></p>
[QUOTE="JKCattle, post: 1669175, member: 33021"] I also spoke with Jordan about using 7&7 on virgin heifers. His group didn’t have any data so he wouldn’t recommend. I tried it and I wouldn’t recommend either. We had 86% adult cows, 40% first calf heifers and 29% virgin heifer preg rate at ultrasound. All were bred on observed heats. Funny thing is we rebred all 2nd time with GnRH and 7 day Lutalyse and got 100% on virgin heifers and 87% on cows / first calf heifers. Didn’t even put out a cleanup bull because the ones that didn’t settle were on the list anyway. Like 7&7 except for virgin heifers [/QUOTE]
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Artificial Insemination (AI) for Cattle
7 & 7 Synch protocol anyone using it?
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