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  1. #1
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    Default Mare born with no ovaries?

    Has anyone ever dealt with a mare that appears to have been born with no ovaries, but isn't a hermaphrodite?
    Only two emotions belong in the saddle: One is a sense of humor. The other is patience.



  2. #2
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    A friend has one, or had I should say. Beautifully bred and injured in a pasture accident as a baby so some years later they decided to breed. And no ovaries. No way of telling from the outside.



  3. #3
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    Did they ever do testing to detect a chromosomal abnormality? Mare is very well bred, but didn't make it to the show pen. Teasing to a stallion often, but upon U/S - no ovaries detected. Only a small area of possible tissue where the L ovary should be.
    Only two emotions belong in the saddle: One is a sense of humor. The other is patience.



  4. #4
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    I'd take her to a university to have her ultra sounded by a specialist if it were important. I'd suspect small or abnormal location of ovaries before thinking non existent. But I'm not a vet.


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  5. #5
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    Quote Originally Posted by bugsynskeeter View Post
    Did they ever do testing to detect a chromosomal abnormality? Mare is very well bred, but didn't make it to the show pen. Teasing to a stallion often, but upon U/S - no ovaries detected. Only a small area of possible tissue where the L ovary should be.
    No, I'm almost certain they didn't.



  6. #6
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    I dealt with a mare like this years ago. She was retired from racing and shipped off for breeding, only to be sent back weeks later when they made this discovery. I don't think she was tested for any chromosomal abberations.
    *CrowneDragon*
    As Peter, Paul, and Mary say, a dragon lives forever.



  7. #7
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    How do they know she isn't a hermaphrodite? Can't the amount of "male" tissue be so small and up in the body be so small it's hard to detect?

    I've only heard of one of these...a breeder friend of mine lusted after this yearling "filly" owned by a neighbor. Finally paid quite a price for the horse when it was almost 4; went to breed it and...oops...!

    That would be the kind of luck I would have...



  8. #8
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    Most things I have read about hermaphrodite mares is that there is a definite penis upon examination. This mare does not appear to have one nor an enlarged clitoris.

    Was just wondering if anyone else had dealt with such a thing.
    Only two emotions belong in the saddle: One is a sense of humor. The other is patience.



  9. #9
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    You can have a karyotype disorder without being a "hermaphrodite". Without doing karyotype testing you won't know if this is a chormosomal issue or some other congenital type problem.
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  10. #10
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    Could she have been ovarectomized? The university here keeps one for teasing and teaching purposes. They just use hormones to get the proper behavior.



  11. #11
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    Quote Originally Posted by eqsiu View Post
    Could she have been ovarectomized? The university here keeps one for teasing and teaching purposes. They just use hormones to get the proper behavior.
    No. We know her history since birth and she would not have been spayed by any of her previous owners as she is a very valuable broodmare based on bloodlines alone.

    I knew they could have chromosomal abnormalities without being a hermaphrodite. Was curious if anyone had tested a mare they had with ovarian angenesis and what the results were (If they were chromosomally normal).
    Only two emotions belong in the saddle: One is a sense of humor. The other is patience.



  12. #12
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    Late to the party but...

    when I was a kid (well, teenager) the farm where I worked had a mare who would not get pregnant and only came into a sorta-heat with lute. When she was ultrasounded she was discovered to have just 1 very small mass where her left ovary should be, and nothing where her right should be. She also had a small, malforumed uterus.

    It's my understanding the mare did have some kind of chromosomal issue but was not a hermphrodite.
    "The nice thing about memories is the good ones are stronger and linger longer than the bad and we sure have some incredibly good memories." - EverythingButWings



  13. #13
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    We had a filly that didn't have ovaries - just some tissue on either side. Did a lot of research on it and it just happens. Her dam had other fillies and they were fine. It's often very difficult to use them as recipients so we donated her to a Veterinary School and they did manage to produce a foal from her.
    She did cycle and tease for us but on palpation the Vet said something wasn't right and did an ultra-sound and it was obvious there were no ovaries.
    I was told that it is not hereditary.
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  14. #14
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    Quote Originally Posted by ise@ssl View Post
    She did cycle and tease for us but on palpation the Vet said something wasn't right and did an ultra-sound and it was obvious there were no ovaries.
    I was told that it is not hereditary.
    Hmmm, I guess it wouldn't be... ;-D

    There was a grade I level mare that had no ovaries. (Guess they found out when they tried to breed her) She was sent back to race and of course eventually started to slide down the scale. Someone or a group of someones bought her and retired her to Old Friends. I can't remember her name at all but she was gorgeous. Ran in the BC too.
    Every mighty oak was once a nut that stood its ground.

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