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Cattle Boards
Breeding / Calving Issues
Forty-eight hour weaning
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<blockquote data-quote="overthehump" data-source="post: 898339" data-attributes="member: 18046"><p>I just wanted to say that I have used temporary weaning before with breeding cows. I think it is best used with a synchronization program. Normally what I will do is at begining of the breeding season select all of the cows with a 40d or older calf. We would then admnister an injection of gnrh and implant a CIDR. 7 days later the CIDR is removed with an injection of PGF2a. Also on day 7 we pull calves from those female and place a heat detection patch on the cows. We then watch the cows for heat and AI 12 hrs after standing heat on a cow. At the end of an 84hr period from the day 7, we mass inseminate all females that were not in heat and give a 2nd injection of gnrh at insemination time. The calves effectively are weaned for 84hrs. As long as the calves are provided with free choice feed, hay and water this works great....we even have hauled the calves to another facility. The mechanism behind temporary weaning is that the nursing stimulus has a negative feedback on the pituitary which can decrease fertility. Removing that stimulus by weaning can boost AI preg rates by %10 (our results). I also use temporary weaning with the above protocol for synchronization of recipient females for embryo transfer. I am a fan. I dont know if it would benefit anyone that is just naturally breeding cattle because you have no idea about the stage in the estrous cycle any given female is in. Hope this helps.</p></blockquote><p></p>
[QUOTE="overthehump, post: 898339, member: 18046"] I just wanted to say that I have used temporary weaning before with breeding cows. I think it is best used with a synchronization program. Normally what I will do is at begining of the breeding season select all of the cows with a 40d or older calf. We would then admnister an injection of gnrh and implant a CIDR. 7 days later the CIDR is removed with an injection of PGF2a. Also on day 7 we pull calves from those female and place a heat detection patch on the cows. We then watch the cows for heat and AI 12 hrs after standing heat on a cow. At the end of an 84hr period from the day 7, we mass inseminate all females that were not in heat and give a 2nd injection of gnrh at insemination time. The calves effectively are weaned for 84hrs. As long as the calves are provided with free choice feed, hay and water this works great....we even have hauled the calves to another facility. The mechanism behind temporary weaning is that the nursing stimulus has a negative feedback on the pituitary which can decrease fertility. Removing that stimulus by weaning can boost AI preg rates by %10 (our results). I also use temporary weaning with the above protocol for synchronization of recipient females for embryo transfer. I am a fan. I dont know if it would benefit anyone that is just naturally breeding cattle because you have no idea about the stage in the estrous cycle any given female is in. Hope this helps. [/QUOTE]
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Forty-eight hour weaning
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