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  1. #1
    Join Date
    Mar. 10, 2006
    Location
    New Minas, Nova Scotia
    Posts
    1,787

    Default How reliable are sex checks?

    This past week, a first arrival came in the form of a filly. During early stages of the pregnancy a sex check had been performed and I was told that within a 90% predictability factor. "Both mares would produce colts." The first to arrive is a filly.

    I could not be more pleased, but it raises doubts of sex check accuracy?
    Was I in the 10%_ile of cases?

    I am happy with the outcome regardless.



  2. #2
    Join Date
    Nov. 5, 2000
    Posts
    9,753

    Default

    Some vets are better at it than others. The vet I used when I was breeding has about a 90% success record.



  3. #3
    Join Date
    Mar. 10, 2006
    Location
    New Minas, Nova Scotia
    Posts
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    Default

    In all reports the vet used was very good. Head vet at University of Columbia, Missouri. I am very fortunate to have encountered a very reliable top notch facility to help raise the foals economically. I feel fortunate to have been connected with these good midwest folk.

    Like I said, I couldn't be more pleased with the error however it occured!!



  4. #4
    Join Date
    Nov. 28, 2003
    Location
    MO
    Posts
    4,582

    Default

    Some fetal sexing experts are 90+% with their accuracy. However, it takes A LOT of practice and is still tricky. The fetus has to be in the correct position and there is a narrow window of time (I think 55-70 days, but don't quote me on that). I know that we do it around 60-65 days.
    The vets at MU are excellent, but I know for a fact that in that area they aren't getting to practice their fetal sexing much. They don't get to do a huge amount of repro b/c Equine Medical Services/Dr. Foss is just down the road from them (about 10 minutes away).
    Courage is going from failure to failure without losing enthusiasm."
    --Winston Churchill
    https://www.facebook.com/pages/Hills...h/112931293227
    www.HillsideHRanch.com



  5. #5
    Join Date
    Mar. 17, 2006
    Location
    Sunbury, NC
    Posts
    1,789

    Default

    We have only tried once, just because vet was here when one mare happened to be about 60 days along, and the vet said it looked like a colt... she was right! Not enough experience here to really say one way or the other, but it was neat that she was right!
    Signature Sporthorses
    www.signaturesporthorses.com



  6. #6
    Join Date
    Oct. 23, 2001
    Posts
    1,560

    Default

    we have had several 100% accurate for us



  7. #7
    Join Date
    Dec. 25, 2002
    Location
    Georgia
    Posts
    2,667

    Default

    50% accuracy ;-)



  8. #8
    Join Date
    Jun. 15, 2002
    Location
    Gainesville, FL
    Posts
    5,985

    Default

    Quote Originally Posted by risingstarfarm View Post
    50% accuracy ;-)
    My thought exactly!
    I love cats, I love every single cat....
    So anyway I am a cat lover
    And I love to run.



  9. #9
    Join Date
    Jan. 1, 2006
    Posts
    674

    Smile

    My vet and I have a deal. I do the string test and she does the ultra sound. We have agreed 100%. But she does the mares at about 90 days for free. If she is right I pay for Mexican Food and Margaritas. Last year the bar bill was much more than the ultrasound would have been!!! This year she is "in foal" so when we go I will get away with a much cheaper dinner!!!--



  10. #10
    Join Date
    Jul. 6, 2004
    Location
    The Redneck Riviera
    Posts
    3,874

    Default

    I am two for two being correct. I had my vet fetal sex 2 of my foals this year - one by happenchance (following kissing twins) and one actually planned for an ultrasound to fetal sex on day 60. Dove was said to have a filly (yep, Ruby is on the ground), and Cory was said to have a colt (and yep, Nick is on the ground).
    Emerald Acres standing the ATA Approved Stallion, Tatendrang. Visit us at our Facebook Farm Page as well!



  11. #11
    Join Date
    Mar. 4, 2008
    Location
    Birmingham, AL
    Posts
    1,631

    Default

    My understanding is that the fetal sexing is supposed to be done from day 60-65. I don't usually bother but the one year we did it, the vet was correct 50% of the time (only two mares in foal that year)...not a very large sample size.
    Altamont Sport Horses
    Trakehners * Knabstruppers * Appaloosa Sport Horses
    Home of stallions: Ambrosius af Asgard "Atlantis" & Hollywood Hot Spot
    Birmingham, AL



  12. #12
    Join Date
    Mar. 10, 2006
    Location
    New Minas, Nova Scotia
    Posts
    1,787

    Default

    Thanks. I am glad of the outcome just surprised that's all.



  13. #13
    Join Date
    Mar. 10, 2006
    Location
    New Minas, Nova Scotia
    Posts
    1,787

    Default

    Continued news is that the second of my two mares has foaled a filly so regarding predicatability. I guess we are batting a 100% in error and oddly enough, I couldn't be more pleased with the result from my standpoint. I have two young filles by Corcovado. Life is good.



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