Question on Synchroinizing Cows Too Soon After Calving

I have some later calving two year olds that I want to get bred back as soon as possible to "move them up" in the calving cycle.  We mass AI our cows and heifers.  The particular females I'm talking about have calved in the last 2-3 weeks and we will start synchronization on Nov. 25, so some of these girls will only be 30 days after calving at that time.

I have no expectation to actually AI them.  However, am I likely to hurt or help them in regards to getting them ready to breed by by our bulls by synchronizing them this early?  Or would I be better off letting nature take its course and not mess with them.

I've been told that co synch-CIDR will work well for this. I wouldn't expect great conception but this is probably your best bet.

That is the synch protocol we use - but my question is will it hurt or help cows if subjected to that too soon after calving.

Chambero, I had the same scenario this past spring. Had 4 first calf heifers that calved late. I cidred them @ 30 days post calving and did get 4 good standing heats and bred off heats. Settled 3 out of the 4. I didn't think that it hurt the heifers as far as the next heat was concerned.
  If you haven't boughten your prostiglandin yet, I would highly recommend trying the estroPLAN. My experience has been hotter standing heats and cows bunched tighter. JMO. Brent

It has been our experience it will help, the cidr protocol will bring them in quicker and once they are cycling they are cycling, no reason it should hurt conception at all.

A few years ago, I kept 10 late calving cows ( all calving in May) on a small patch of grass around our feedlot , just to keep the grass under control. Seeing they were this close to the chute I did an experiment using CIDRs  that had been used twice before. (*** note: Canadian CIDRs have more product in them than US CIDRs) All 10 cows had great heats and all were AI bred. That fall, 9 out of the 10 were pregnant and all of these 9 cows calves in March the next spring. I successfully moved them 2 months, and in a couple of cases almost 2. 5 months earlier. I have used this protocol on a few cows since and I have seen no adverse affects. This is far from a scientific study, but so far it has worked for me.

So what all did you do in your experiment other than just put the CIDR's in - just bred them on natural heats ?

Thanks for the info.  I'll probably go ahead and run them through the process and see what happens.

Have done the same thing several times over the last few years.  Have even tried a few that were between 20 and 30 days, those under 30 days didn't have any luck, they may have moved up a little but what's to say that it wouldn't have happened naturally.  Around that 30 day mark I've had good success getting them AI bred, with no long term adverse affects.  Always figured if the idea was even just to get them moved up in their calving what did it hurt to throw a few extra dollars to the wind and go ahead and AI them.

You can actually initiate estrus in cows that are capable (nutrition plays key role) of cycling with synthetic progesterone like CIDRs and get them bred in 45 days after calving.  The first heat after calving is usually not fertile but in a synch program you usally breed on the second actual estrus.

45 days is my standard rule of thumb for what I try to AI.  These particular ones I was asking about are going to be shorter than that.  We havea one shot deal with AI'ing these cows out in the pastures and although I have no expectation they'll breed at the same time my others, I'm wanting to speed up the occurrence of that second estrus cycle.  For the most part, the girls I'm talking about calved a little later than I was hoping on their second calf.

I just got down setting an old cow up that was 3 weeks after calving she had a great heat will see friday if she has a CL to put an embryo in. My embryologist says you won"t hurt them.