Opinions on the 5-day CO-Synch + CIDR program

[CAB]

I am going to help set up & breed some cows for a friend and he is wanting to use this program, and here's the question, Do we have to run the cows through the 2nd time for the 2nd shot of PG or can we give 2 shots @ 2 different locations the first time through the chute? I have been told that if you don't give the 2nd shot that you can just as well use the 7-day program and have also been told/heard that you can go through the chute once with the 2 shots at 2 different locations. Please discuss your opinions & results. Thanks in advance. Brent

 

[RAWANGUS]

IMO, I would run the cows through a second time.  that is what I do and seems to work fine.

 

[dhs]

I am going to help set up & breed some cows for a friend and he is wanting to use this program, and here's the question, Do we have to run the cows through the 2ND time for the 2ND shot of PG or can we give 2 shots @ 2 different locations the first time through the chute? I have been told that if you don't give the 2ND shot that you can just as well use the 7-day program and have also been told/heard that you can go through the chute once with the 2 shots at 2 different locations. Please discuss your opinions & results. Thanks in advance. Brent

I would be sure to run them through the second time. The timing of the 2 shots is what really makes this protocol work. We started using the 5-day CO-Synch + CIDR protocol last fall and have seen significant improvement in conception rates (about 20% higher than the 7-day CO-Synch + CIDR protocol).

Thanks, dhs

 

[ai er]

Give both injections at the same time, works just fine.

 

[ejoe326]

I can't remember the specifics but we were told by our vet and the vet running an embryo program the shots need to be given on two different days.  They did not say it would not work but why take the chance when dealing with expensive drugs, etc.  A place running about 300 cows is using the same protocol and they do the extra trip through the chute as well and had incredible conception rates.

When I talk to either vet I will try and remember to ask why.

 

[kccowman]

What is the protocol for this 5 day program?

 

[CAB]

What is the protocol for this 5 day program?

 

[rackranch]

It is important to follow the protocol, the 2nd shot is to ensure regression of the corpus luteum allowing proper release of the follicle and thus ovulation.  If you don't, your conception rates will decrease.

 

[Gargan]

What GnRH drug do most of you use?

 

[BLRanch]

I talked to my professor about this today and she said that she just heard results on a test of this. She said that the results didn't show a noticeable difference in a conception rates in relation to giving the shots at the same time (different injection sites) vs giving the shots 8 hours later (plus or minus 2 hours). She also said it was a multi-state test.

 

[hntwhitetail]

Anymore information on this?  I am thinking of setting a group up in the coming weeks.  Is everyone breeding on 12 hours after standing heat, or just breeding on time??  Has anyone else had expreience w/ giving just the 2 shots of PG in 2 different areas (different sides) vs. running them back in 8+/- 2hrs? 

Also, if I want to be able to breed the cows on the weekend w/ a heavy workload during the week what day am I looking @ starting the CIDR and the first shot to have everything come in on a Saturday / Sunday?

Thanks for any information.

 

[nativeman]

If you give first shot ,what do you do if cow comes in heat day 2 to 6,breed,continue ,forget program.

 

[CAB]

She won't come in heat with the cidr in.

 

[DakotaCow]

I have had the best success with this protocol, we use estrumate exclusivley and usually whatever GnRH is the cheapest per dose. Give a double dose of estrumate when you pull the CIDR, breed heifers 69 hours later and cows at 72. Its off protocol but it works.

 

[Davidsonranch]

When using the 5 day program, is the time you AI at 69-72 hours from the first shot of PG or the second shot 8 hours later?  Per the diagram its after the first shot?

Also for a "normal" sized cow what dosages are people using for the 5 day sync?  2cc of GnRH when putting in CIDRS, and 5-7 cc's at each of the two PG shots, and another 2cc of GnRH at breeding?

 

[nativeman]

how many days after calving do you start,45 days?

 

[Davidsonranch]

I'm super intersted in trying the 5 day instead of the 7 day, but running the cows through the chute yet another time worries me.  Super intersted to hear if the two shots at once method is working.

 

[hntwhitetail]

Does anyone see any difference in using Estrumate vs. Lutalyse?

 

[HGC]

I have used a 5.5 day CIDR sync for 12 years.  I did it out of necessity because of work.  I would put CIDR's in Saturday morning, pull them Thursday after work and then breed off of standing heat all weekend.  I only ever gave 1 shot of lutylase when I pulled the CIDR's.  Has worked great for years.

 

[ai er]

This will be my fourth year doing the 5 day protocol. I give 10 ml of prostaglandin (Lutalyse) at time of pulling CIDR. It works awesome. I breed off heats, any not bred by 72hours, gets bred with an injection of GnRH. Averaging about 75% bred to AI. I can set up the cows for one weekend. Don't have time to heat check with kids activities. I've been impressed.