OK, obviously, I am at my wits end with this mare,and have come to the conclusion I'm just going silly trying to come up with ideas. Please offer any advice that might help! I have a mare who foaled on April 11, 2009. She has not come back into heat (outwardly) since she foaled. She is a maiden mare, and came to us completely wild last year. We're able to catch and handle her, but around the vet she's a complete NUT JOB, and there's no possibility yet of having the vet sedate and ultrasound her. There is also NO possibility of giving her shots 19 or 20 days in a row....she's not nearly trusting enough, and I don't want to ruin the work I've put into her to get her as settled as she is. So, here's my question.....I read in the articles portion of this site that ovulation occurs appx every 21 days. How long b/w foaling to the first ovulation then? Is that 21 days as well? I typically put my mares with the stallion about 22 days post foaling...but I have one who breeds on foal heat at around 7 days. So, in order to calculate when this mare may be ovulating, do I count every 21 days since she foaled? Or do they all ovulate 7-10 days post foaling, then count the 21 days? I'm hoping to figure out approximately when her cycle will be, and hopefully tease her intensely, and get her bred....but it's ineffective to try to do this every day of the month. Any advice?? ~wits end!
How long b/w foaling to the first ovulation then? Is that 21 days as well?
The average interval to the foal heat ovulation is somewhere between 5 and 15 days.
So, in order to calculate when this mare may be ovulating, do I count every 21 days since she foaled?
You can't reliably use this method unless you know the day of the first ovulation, and even then, it's not going to be that reliable. And remember that if you're out by 72 hours, then the semen is not going to be viable.
There is no need to be "giving her shots 19 or 20 days in a row" even if you were using the full P&E protocol - that is 10 days of injections. A better bet for you though would be to talk to your veterinarian about using the biorelease altrenogest from BET Pharmacy which is a single injection that will produce estrus in about 14 days in the majority of mares regardless of what ovarian activity was present at the time of treatment. Note however that if the mare is lactationally anestrus and has truly shut down ovarian activity, that is not going to work. On top of that, even if she hasn't shut down ovarian activity, but is behaviourally lactational anestrus, even if you induce estrus in her, she's not going to respond to the stallion and you will probably need to AI her or tranquilize the heck out of her to get her bred. Bottom line? You really need to get the mare ultrasounded and evaluated by a capable equine reproductive veterinarian to determine what is going on...
How about I bring her to you? Wanna give it a go with a truly crazy mini?? Haha!!?? I was very unable to hold her for my vet to sedate her to try and ultrasound. Of course, it was a farm call and we don't have stocks here. I really don't want her to go unbred though! Is the biorelease an IM shot? May be easier than trying to get the vein on her.....
The biorelease altrenogest is indeed IM. We recommend the pectoral muscles, as there is likely to be a fair amount of localized swelling for a few days, and drainage down from that point (for dissipation) is possible.
Well, then! I am going to speak to hubby today and see what he wants to do about her. At this point, I think he's as ready as I am to get her bred!! Where can I email you when I get it all figured out!? And Thanks!
hey, sorry I didnt' update here! I went out of town for 4th of july weekend, figuring I'd call ER when I got back and get an appt set up. Low and behold, when I got home, I saw the mare actually STANDING for the stallion!!! I bred her 3 times, and am waiting to see if she took !
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