cow pollinater":1kvvvojo said:You can breed her anytime from now until tommorrow afternoon with pretty similar results.
KNERSIE":clmnnfzi said:yes you do, the GNrH will cause them to ovulate anyway, whether you see a heat or not.
angus9259":3ov7dcqs said:KNERSIE":3ov7dcqs said:yes you do, the GNrH will cause them to ovulate anyway, whether you see a heat or not.
Some suggest doing the tai on heifers earlier than 72 hours. Does it really matter or is that only if you're not doing heat detection?
I can almost underestand it in the days of magic wands or ampules when the pipettes were so much bigger in diameter then the sheaths that are used with straws.KNERSIE":284yfw09 said:angus9259":284yfw09 said:KNERSIE":284yfw09 said:yes you do, the GNrH will cause them to ovulate anyway, whether you see a heat or not.
Some suggest doing the tai on heifers earlier than 72 hours. Does it really matter or is that only if you're not doing heat detection?
Not sure what the thinking behind that is, some dairymen here who AI jersey heifers weighing 220kg will AI as soon as a strong standing heat is observed because they feel its easier to get the pistolette through the minute cervix of the jersey heifer earlier rather than later, but I never had problems getting through the cervix of hereford heifers (or holstein heifers for that matter).
angus9259":33owwep8 said:cow pollinater":33owwep8 said:You can breed her anytime from now until tommorrow afternoon with pretty similar results.
I used a gnrh+cidr 7 day lute protocol. I typically time ai with gnrh all non-responders at 72 hours - heifers and cows. Do you do tai non responders as well?
angus9259":3ngyll4x said:KNERSIE":3ngyll4x said:yes you do, the GNrH will cause them to ovulate anyway, whether you see a heat or not.
Some suggest doing the tai on heifers earlier than 72 hours. Does it really matter or is that only if you're not doing heat detection?
KNERSIE":3kwl3da2 said:Not sure what the thinking behind that is, some dairymen here who AI jersey heifers weighing 220kg will AI as soon as a strong standing heat is observed because they feel its easier to get the pistolette through the minute cervix of the jersey heifer earlier rather than later, but I never had problems getting through the cervix of hereford heifers (or holstein heifers for that matter).
angus9259":1uyz085t said:So - standard procedure is 12 hours after first standing heat - see that at night, breed in the morning, see them in the morning, breed at night. What do you do if you see them late afternoon?
cow pollinater":2h67beuu said:You can breed her anytime from now until tommorrow afternoon with pretty similar results.
If she's still standing this evening and you hit her early in the morning she will probably settle.angus9259":3ml02zj0 said:cow pollinater":3ml02zj0 said:You can breed her anytime from now until tommorrow afternoon with pretty similar results.
Same issue - different cow. I'm traveling this time. Daughter said the cow was standing this morning. I won't be able to ai till tomorrow morning (24 hours since standing) - she's been standing all day today. Still potentially effective?? Thanks.