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Offline DB

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Lutalyse question
« on: April 19, 2017, 12:14:26 PM »
I was wondering how long after you think a cow or heifer might have had a heat could you give lut to bring back into heat? I am not sure if she was in heat for sure but acted like it but am not quite sure how low to wait before I should hit her with lut. Is there a certain number of days to wait or will it work right away? thanks for any information.

Offline Show stopper 95

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Re: Lutalyse question
« Reply #1 on: April 19, 2017, 02:00:28 PM »
In a hypothetical 2 shot scenario you'd give a shot... see heat 72 hours later and 11 days after the first shot you'd give a second shot and have another heat 72 hours later so your heats would be 14 days apart but your distance from "heat to second shot" would be 8 days

If you had a natural heat I would say you would be best off waiting 8 days to try again.

Basing that off of a 2 shot protocol ... but you only give one shot since your first heat was natural

Someone please correct me if I'm wrong which I'm sure I probably miscalculated in there

Natural heat.... wait 8 days to give shot
2 shot protocol you'd have a shot... 3 days later have a heat... 11 days after the first shot give another shot and have heat 3 days after that

So you would go ~8 days after heat to give the next shot
« Last Edit: April 19, 2017, 02:07:41 PM by Show stopper 95 »
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Offline GrowerShower32

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Re: Lutalyse question
« Reply #2 on: April 19, 2017, 05:10:27 PM »
Ok I have a question concerning lutalyse and a cow that has calved(postpartum anestrus) ok I have a cow that is coming up on 50 days post calving I haven't seen any signs of estrus but I can't say she didn't have a silent heat but I can say I have noticed any signs of heat. If she is 50 days post calving if I give her a shot of lutalyse could I have a heat? Cause she bred back her last two times within 30 to 40 days post calving cause she has a bull calf on the ground to speak for that.

So would I be pouring water on a duck's back if I give her the shot on day 50 without any signs of heat before?

Offline Show stopper 95

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Re: Lutalyse question
« Reply #3 on: April 19, 2017, 06:18:27 PM »
It won't bring one out of anestrous they need to be cycling back in order for it to work, using a protocol with a cidr could jump her into estrus a little quicker but the estrumate or lut in theory shouldn't do you any good since you haven't observed heat on her to confirm she's cycling
Good, better, best. Never let it rest. Until your good is better and your better is best. -Tim Duncan

Braden House- Big House Show Cattle Iola Tx 9796761450. Charolais, Charolais x, Americans,  Canadian Red Angus, and Club Calves.

Offline WinterSpringsFarm

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Re: Lutalyse question
« Reply #4 on: April 20, 2017, 05:18:33 AM »
Read the label, it'll tell you how many days post heat to give her a shot to bring her back in. Works like a charm on most cattle.

Offline SimFarmer

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Re: Lutalyse question
« Reply #5 on: April 20, 2017, 10:09:31 PM »
My beef repro professor in college always said it was ineffective until 5 days after heat.

Offline firesweepranch

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Re: Lutalyse question
« Reply #6 on: April 25, 2017, 12:33:40 PM »
Ok I have a question concerning lutalyse and a cow that has calved(postpartum anestrus) ok I have a cow that is coming up on 50 days post calving I haven't seen any signs of estrus but I can't say she didn't have a silent heat but I can say I have noticed any signs of heat. If she is 50 days post calving if I give her a shot of lutalyse could I have a heat? Cause she bred back her last two times within 30 to 40 days post calving cause she has a bull calf on the ground to speak for that.

So would I be pouring water on a duck's back if I give her the shot on day 50 without any signs of heat before?


IF she has not cycled, the lute will do nothing. In that case, I would put a CiDR in her for 7 days, then pull and give lute. There was a recent article put out about shortening up your calving window by using the CiDR/Lute cycle 21 days after calving to get the last ones cycling quicker. (http://www.beefmagazine.com/breeding/4-tips-using-cidrs-move-late-calvers)
I have a two year old nursing her fist calf, and she is 60 days post calving and has not cycled. I plan on putting a CiDR in her this week to get her going. It works most of the time.

IF she has cycled, you need to wait 8 days AFTER her observed heat to try a shot (like others said here).
God, family, and Simmental cattle;  that's what makes life worth living!

Offline KAXX

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Re: Lutalyse question
« Reply #7 on: April 25, 2017, 01:59:46 PM »
Use a cidr. 5 day or 7 day protocol. I have had the best luck with closing up my calving window that way.

 

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