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mare not in heat, ovulated early, IDK, help!

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  • mare not in heat, ovulated early, IDK, help!

    mare ovulated on a Sunday for sure per palpation and U/S, was given the Estrumate shot about 8 days later to bring her back, on day 10 vet checked her (different vet because the mare moved) and she had just ovulated, weird! She was very regular last year. So, in short the ovulated 2 weeks after ovulating. Now we are on day 20 since the Estrumate shot and she has not shown heat yet. Should she soon? The new vet is a little perplexed. It's my understanding that they go into heat roughly about 21 days or so and the new vet said she would expect her in anytime, which she is not today....I hope that is the case so we can breed on this cycle! The vet's have all used U/S and are good with repro this was just odd

  • #2
    Why not just give her another Estrumate shot now, instead of waiting on her?

    Several things could have happened. She could have had a mid-cycle follicle and thus the super fast ovulation when given the show. If I read your post right, she got the shot on day 8 and had ovulated on day 10. Any chance it wasn't a new ovulation, but the old CL they were still seeing? It can take a mare anywhere from 3-5 days (average) to come in after the prostaglandin is given. Also, have you had her ultrasounded now, or are you waiting on her to show heat (could be in heat and not showing). Lots of different things here!
    Already excited about our 2016 foals! Expecting babies by Indoctro, Diamant de Semilly, Zirocco Blue and Calido!


    • #3
      I have never, ever had luck in short cycling with just prosti.

      I have had FABULOUS luck in timing in with either a short course of regumate and prosti (12 days regumate, prosti on day 13) or now, even better, bio-release altrenogest (one shot) and prosti.

      I know others have had success and will give advice on short cycling. But it just hasn't worked for me.
      InnisFailte Pinto Sporthorses & Coloured Cobs

      Bits are like cats, what's one more? (Petstorejunkie)


      • Original Poster

        Thank you

        the vet did US and was really scratching her head at this one...

        one suggestion from the SO was that moving her could have caused an early heat

        she normally shows VERY well and was showing heat shortly after the shot so I think that she just came and went early that cycle...

        starting over today with a US and we'll see where we are, it's been since 6/3 that the shot was given and it was about 3-4 days after that the vet came if I recall so she should be coming in or in by now. I'm not there to see her, ugh!


        • #5
          you know... science tells us it's 'impossible' that moving etc. will change a mare's cycle...

          But how many times have I seen a mare arrive at a new place and squat & squirt???

          too many to write about, that's for sure.

          I dunno. "Science" says no... but... <shrugs>
          InnisFailte Pinto Sporthorses & Coloured Cobs

          Bits are like cats, what's one more? (Petstorejunkie)


          • #6
            I think the problem with "just" the Lute shot is the opinions seem to be all over the map as to what *should* happen but oftentimes it never happens that way ...

            2 clients gave their mares Lute on Monday. With one - the vet wanted to come out the following TUESDAY with the intention of breeding her the following Wednesday or Thursday

            She ovulated that Friday or Saturday and was missed ... no surprise there at all

            In another case, mare was given the Lute on Monday, vet was coming out on Thursday to check her, mare ovulated on Wednesday. We missed her too

            As PP said, if the follicle is mid/end cycle, that Lute shot can super charge them and speed them forward so they ovulate in a couple of days and you are hanging on waiting for 5 days and they have already gone in 2-3 days. And if you dont have a stallion around to tell you what is happening, oftentimes they ovulate without anyone knowing until the vet comes up

            One client opted to send her mare to me for breeding as it simply worked out to be cheaper and easier for her in the long run to have the mare here with the stallion right beside her, than it did for her to try and monitor the mare while she worked all day and was away from the farm and get the vet in while she was at home and try to order in semen that way

            Good luck - can definately add a few grey hairs each breeding season, cant it?!

            True Colours Farm on Facebook


            • #7
              I agree with PintoPiaffe, try using altrenogest or regumate before the prostaglandin.

              Is your vet experienced in reproduction? Was your vet sure that she had just ovulated? The only time I've had happen to me what happened to you is when I accidentally gave my mare lutalyse while she was already in heat.
              'Like' my facebook page: https://www.facebook.com/pages/Calla...946873?sk=wall


              • Original Poster

                Originally posted by Callaway View Post
                I agree with PintoPiaffe, try using altrenogest or regumate before the prostaglandin.

                Is your vet experienced in reproduction? Was your vet sure that she had just ovulated? The only time I've had happen to me what happened to you is when I accidentally gave my mare lutalyse while she was already in heat.
                best solution ever, got a new vet on it! I know the vet too, the other one was poor and communicating amongst other things...so we'll see. he's coming Thrs. The mare is 23 days post ovulation and not in heat or at least not showing it. Thrs will tell us alot when he does a U/S. Old vet palpated yesterday wanted to just give prosti but, I was not comfortable with US so she got mad and quit which I'm fine with!

                Hope everyone else is sorting things out!


                • #9
                  Originally posted by pintopiaffe View Post
                  you know... science tells us it's 'impossible' that moving etc. will change a mare's cycle...

                  But how many times have I seen a mare arrive at a new place and squat & squirt???
                  Granted there may be some that squat and squirt, but what is truly going on with their ovaries when they do it? In the vast majority of cases (read "those outside standard statistical variance") you will find that there is nothing on the ovaries that correlates to estrus, but what you are seeing is submissive behaviour...

                  WRT the OP's (and other's) prostaglandin questions, take a look at our article entitled "I gave my mare prostaglandin, but it didn't work" which should help.
                  Equine-Reproduction.com Now offering one on one customized training!
                  Leg-Up Equestrian Assistance Program, Inc. A 501(c)(3) non-profit charity


                  • #10
                    Interesting the comments on prostaglandins "not working". At our practice, we only ever short cycle mares with prostaglandin. Many of our clients just aren't interested in waiting thorugh a course of regumate, etc. It has worked every single time, unless the mare was not responsive b/c of a too recent CL. That's easy, too, you just give another shot 5 days after the first. However, as someone else mentioned, it is a good idea to know what is going on with the ovaries when you short cycle. A large mid-cycle follicle can move quickly!

                    I'm also with Kathy on the winking/squirting often being behavioral only; simply submissive.
                    Already excited about our 2016 foals! Expecting babies by Indoctro, Diamant de Semilly, Zirocco Blue and Calido!


                    • Original Poster

                      update on my case

                      my mare was not given prosti as the vet stated and the second vet also wanted to just give it, the mare had not shown heat in 25 days nor had an ultrasound been done SO!

                      yet again i found a new vet which makes 3, jeez I tell you!!

                      The new vet seems very knowledgeable, and she is new to the area but, works for a great practice. Right away she had my mare in the clinic and monitored her stats for 3 days. She came to the conclusion that is was time to give prosti last night (sat). Sooner would have been too soon as the first vet wanted.
                      She had 25's and a CL (20 thursday, 25 fri and sat) She will check on Tuesday and hopefully we are setting her up to breed mid week, fingers crossed!!