So you guys use 2 straws on the cow? Doesnt it get expensive?
I had the same question the other day but I didnt think to put it on steer planet. I kinda went with earlier. I didnt have the ability to do it in the dark. I had heard that semen can be good in the cow for a long time as well so I figured earlier is better than the alternative of missing her so I did it that evening 7 or 8 oclock. We shall see, this is sure an exciting time of year, butnow we have to wait 9 months.
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A little bit more expensive but the $30 a straw (average) is worth it to me. $30 is nothing if you miss this heat and have to wait another 21 days or so. As far as time if I was going to AI once, I would AI early morning 6AM or earlier. I am in the process of building a new barn that will be set up with new lightning and if I am concerned, I will be out there AI'ng at 1:00AM. I try and stick as close to 12 hours after 1st sight of standing heat, I will vary a little but with something like you, I would be out there AI'ng by 6AM, thats just me others may do a little different. I was told by the vet at my AI school that the semen (good semen) will survive 24 hours or a little longer in the cow from frozen semen (AI), natural straight from the bull is longer yet.