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Cattle Boards
Breeding / Calving Issues
Whole herd infertile?
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<blockquote data-quote="milkmaid" data-source="post: 518966" data-attributes="member: 852"><p>If you had one heifer cycle 17 days after giving the Lute... she was probably 2-5 days past her last heat when the tech came out and gave the whole group Lutalyse. Keep in mind Lute won't cause a cow to cycle if she does not have a CL on one of her ovaries, and CLs are absent on non-cycling animals, and until about 7-8 days after ovulation or about 5 days before ovulation. If you give Lute to heifers in any of those catagories they will not come into heat.</p><p></p><p>Kind of unlikely the entire group was just past heat though. Could also be they were not cycling and have just started cycling again. Hard to say. I'd still maintain your best bet is have them all palpated, but there's just my opinion.</p></blockquote><p></p>
[QUOTE="milkmaid, post: 518966, member: 852"] If you had one heifer cycle 17 days after giving the Lute... she was probably 2-5 days past her last heat when the tech came out and gave the whole group Lutalyse. Keep in mind Lute won't cause a cow to cycle if she does not have a CL on one of her ovaries, and CLs are absent on non-cycling animals, and until about 7-8 days after ovulation or about 5 days before ovulation. If you give Lute to heifers in any of those catagories they will not come into heat. Kind of unlikely the entire group was just past heat though. Could also be they were not cycling and have just started cycling again. Hard to say. I'd still maintain your best bet is have them all palpated, but there's just my opinion. [/QUOTE]
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Whole herd infertile?
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