My 8-year-old mare was bred with frozen semen on Wednesday 6/11 and again on Thursday, 6/12 When vet did palpation on Thursday 6/12, she said "she's ovulated." Then on the ultrasound, she could still see the follicle at about at 50 mm with a very little amount of uterine fluid. She said she is ready to ovulate as it was very, very soft and timing was perfect. So we inseminated the second dose at about 10 a.m. She came back at about 6 p.m. and the mare had a great amount of uterine fluid. So she was flushed and given oxytocin. Said fluid was whitish (could a yeast infection come up that quickly???). She was given another shot of oxytocin this a.m. Friday. Vet says now we wait to see if she gets pregnant.
If she doesn't conceive, vet wants to do a uterine biopsy next cycle. Mare's culture and cytology earlier this week were ok.
I'm not surprised that the mare had a tremendous reaction to the semen. One dose was twelve 0.5 ml straws. I've never heard of more than 8/dose. (from stallion in the Netherlands)
Would it be worthwhile or a waste of money to get another ultrasound on Monday?
Jos Posted From: 142.177.105.225
Posted on Sunday, June 15, 2003 - 12:13 am:
Before hitting major panic buttons, bear in mind that the perfectly normal post-breeding inflammatory response discharge (mainly made up on neutrophils) is yellow in colour, and could therefore appear grey in solution if flushed. After all, it is pus.
The mare should have been ultrasounded or palpated until a definitive ovulation was observed, as another breeding may have been needed. My faith in "soft follicles ready to ovulate giving perfect timing" has been completely superseded over the years by my knowledge that mare is a four-lettered word! . Always check for and confirm an ovulation!!
Re-ultrasounding on Monday has questionable value. Continuing the oxytocin treatment throughout the weekend as in the article outlining the protocol here would probably have been of considerably more value.
Good luck!
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. Always check for and confirm an ovulation!! 
