I have a reg. angus cow. She is 74 days out from calving. I gave her a shot of estrumate and waited....nothing happened. She didn't show any signs of heat like I am used to seeing w/ other cows. 10 days later I put a CIDR in her an a shot of GNRH. 7 days later I pulled the CIDR and gave her a shot of Estrumate again. It is now the third day, and may appear to be a little puffy in back, but the other cows aren't bothering her at all. Any ideas or suggestions. The previous reputable owner says she always came in around 60 days after calving. Do any of you time breed and how successful is that? When would I do that? thanks a bunch. I am pretty close to throwing the herd bull in with her and cutting my losses.
Need your thoughts on cow cycling
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CAB
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If your cow was not cycling B4 you stop her with the estrumate it won't bring them in & if she was in just the wrong part of her cycle she wouldn't come in off of the one shot of estrumate. You may should have shot a second shot of estrumate @ day 10/11 instead of putting the cidr in. By putting the cidr in @ that time you set the clock to zero. 60 to 66 hours after pulling the cidr & giving the estrumate shot for TAI with a shot of GnRH @ the time of insemination.
Here is what I copied from a post about this a long ago.
So there are a couple of different CIDR protocols out there. Some people swear by theirs more than others. This is the protocol we use, and have had a lot of success using. It is one of the more commonly adopted protocols.
Day 1, We give a shot of 2 cc's of GnRH (you will hear this referred to as GnRH or possibly Gonadotropin, the GnRH drug we use is Cystorelin). Also on day 1 insert a CIDR into the vagina of the animal using a CIDR insertion gun. Here is a good video on the process of inserting a CIDR. http://dotsub.com/view/d970121a-6d78-4c34-b7bb-50872b6fc748
On Day 7 we pull the CIDR and give a 5 cc shot of Lutylase (this is the drug that is referred to as PGF2a or PGF2 alpha) Lutylase is probably the most common PGF2a used. After pulling the CIDR and giving the shot of Lutylase, you should have heat withing 48 - 60 hours. In my experience heifers usually happen earlier than cows. If you see standing heat, breed off of your normal rules behind standing heat. If you do not see standing heat breed the animal at 72 hours post CIDR. (This has changed since I originally posted it. We have been going with 60 hours on cows and 56 hours on heifers). We usually give a 2nd shot of 2 ccs of Cystorelin at this time. I have had a lot of success breeding off of timed AI like this where you never see standing heat at all.
As far as how it works the reproductive piece behind it is this, and skip this paragraph if you don't care. You give the first shot of GnRH on day 1 which clears the dominant follicle from the ovary. This is the point where you essentially start from scratch with the animal. You insert the CIDR which is progesterone. In a normal estrus cycle Progesterone levels spikes rises and then right before estrus it falls off dramatically. With the CIDR you spike the progesterone level and create a new 7 day corpus luteum. You pull the CIDR which drops the progesterone level, and give the PGF2a which causes your 7 days corpus luteum to regress. Estrus should occur at this point. You breed the way of the standing heat. As I said you don't have to give the 2nd shot of GnRH, however we do. Without giving GnRH you could possibly have a persistent follicle on the ovary where the cow is continually coming into heat every 7-10 days.
The CIDR protocol above works fantastic for me. I use it to be able to breed cows on the weekend (I work during the week). It also allows for a tighter breeding window.
There is other protocol where you can bring animals into heat quicker using just Lutylase, but it is not as reliable as the CIDR + Lutylase method.
Hope that helps.
So there are a couple of different CIDR protocols out there. Some people swear by theirs more than others. This is the protocol we use, and have had a lot of success using. It is one of the more commonly adopted protocols.
Day 1, We give a shot of 2 cc's of GnRH (you will hear this referred to as GnRH or possibly Gonadotropin, the GnRH drug we use is Cystorelin). Also on day 1 insert a CIDR into the vagina of the animal using a CIDR insertion gun. Here is a good video on the process of inserting a CIDR. http://dotsub.com/view/d970121a-6d78-4c34-b7bb-50872b6fc748
On Day 7 we pull the CIDR and give a 5 cc shot of Lutylase (this is the drug that is referred to as PGF2a or PGF2 alpha) Lutylase is probably the most common PGF2a used. After pulling the CIDR and giving the shot of Lutylase, you should have heat withing 48 - 60 hours. In my experience heifers usually happen earlier than cows. If you see standing heat, breed off of your normal rules behind standing heat. If you do not see standing heat breed the animal at 72 hours post CIDR. (This has changed since I originally posted it. We have been going with 60 hours on cows and 56 hours on heifers). We usually give a 2nd shot of 2 ccs of Cystorelin at this time. I have had a lot of success breeding off of timed AI like this where you never see standing heat at all.
As far as how it works the reproductive piece behind it is this, and skip this paragraph if you don't care. You give the first shot of GnRH on day 1 which clears the dominant follicle from the ovary. This is the point where you essentially start from scratch with the animal. You insert the CIDR which is progesterone. In a normal estrus cycle Progesterone levels spikes rises and then right before estrus it falls off dramatically. With the CIDR you spike the progesterone level and create a new 7 day corpus luteum. You pull the CIDR which drops the progesterone level, and give the PGF2a which causes your 7 days corpus luteum to regress. Estrus should occur at this point. You breed the way of the standing heat. As I said you don't have to give the 2nd shot of GnRH, however we do. Without giving GnRH you could possibly have a persistent follicle on the ovary where the cow is continually coming into heat every 7-10 days.
The CIDR protocol above works fantastic for me. I use it to be able to breed cows on the weekend (I work during the week). It also allows for a tighter breeding window.
There is other protocol where you can bring animals into heat quicker using just Lutylase, but it is not as reliable as the CIDR + Lutylase method.
Hope that helps.
hntwhitetail
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GLZ said:
Thanks for the info.
AAOK
Well-known member
After going through all that, I would let her run with the cows for a few weeks and breed her at her next natural Standing Heat
Thanks to all of you for the posts. I pulled the CIDR, gave her a shot of Estrumate and waited 72 hours. only thing I saw was that she appeared a little puffy in back and had string of mucous hanging on her tail. I called A.I. guy and he inseminated her w/ another shot of GNRH. wasn't sure why he did that again. He said she had nice tone when he was inside her. what did that mean? Anyhow, if she isn't bred now whe will be when Deuce the bull returns in 10 days. He's a no nonsense kind of bull. haha thanks again.
