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Cattle Boards
Artificial Insemination (AI) for Cattle
Preg checking after A.I.ing
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<blockquote data-quote="Dsth" data-source="post: 1626391" data-attributes="member: 38038"><p>I started out having the vet palpate the cows but have found out that they are not as accurate as in the old days. I use to be impressed by how accurate my vet was on days bred since I AI everything so I know the breeding date. Once he retired the younger vets seemed to have trouble confirming pregnancy on anything less than 60 days and days bred would not be very accurate. I then started doing blood test on cows 30 days bred or longer. I did not care about days bred but rather preg or open before going out to pasture. They claim about 97% - 99% accuracy but I found that was not the case for me. I had cows palpated that tested open but I did not see coming back into heat and found that some were bred. also had cows test pregnant but did not have a calf the next spring. The last time I sent blood samples in, I collected samples on a Friday night to send out on Saturday. Had one cow that I collected in heat Saturday morning, but I sent the sample with the others anyway because I had the paperwork and check all ready to go. That cow tested pregnant. The last 2 years I have been ultra sounding. have had 100% accuracy on pregnant/open claims on my 25-30 cows. Had 2 cows this year that vet said had twins but both delivered single calf. he did say that one would probably absorb one calf because the fluid was cloudy and calf was smaller than the other. I have also based pregnancy on whether or not I seen them back in heat. That I only did one year. With all that said, I would probably wait until they are 60 days or longer and send blood samples in just because it should be more accurate and cheaper. Good luck</p></blockquote><p></p>
[QUOTE="Dsth, post: 1626391, member: 38038"] I started out having the vet palpate the cows but have found out that they are not as accurate as in the old days. I use to be impressed by how accurate my vet was on days bred since I AI everything so I know the breeding date. Once he retired the younger vets seemed to have trouble confirming pregnancy on anything less than 60 days and days bred would not be very accurate. I then started doing blood test on cows 30 days bred or longer. I did not care about days bred but rather preg or open before going out to pasture. They claim about 97% - 99% accuracy but I found that was not the case for me. I had cows palpated that tested open but I did not see coming back into heat and found that some were bred. also had cows test pregnant but did not have a calf the next spring. The last time I sent blood samples in, I collected samples on a Friday night to send out on Saturday. Had one cow that I collected in heat Saturday morning, but I sent the sample with the others anyway because I had the paperwork and check all ready to go. That cow tested pregnant. The last 2 years I have been ultra sounding. have had 100% accuracy on pregnant/open claims on my 25-30 cows. Had 2 cows this year that vet said had twins but both delivered single calf. he did say that one would probably absorb one calf because the fluid was cloudy and calf was smaller than the other. I have also based pregnancy on whether or not I seen them back in heat. That I only did one year. With all that said, I would probably wait until they are 60 days or longer and send blood samples in just because it should be more accurate and cheaper. Good luck [/QUOTE]
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