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Third testicle and fertility?

Equine-Reproduction.com Bulletin Board » General Stallion Questions » Third testicle and fertility? « Previous Next »


Author Message
 

mynutmeg
Neonate
Username: Mynutmeg

Post Number: 4
Registered: 01-2011
Posted on Tuesday, February 01, 2011 - 08:24 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

My sister has a 4 year old 'gelding'. We were both there and they took 2 testicles and the associated tubing. He was gelded at 1 year old.
He did calm right down but over the last year or so has become more and more riggy in his behaviour and has been seen covering mares.
We think my mare (who was turned out with him last spring) may be pregnant - waiting on the blood work. There is another possibility for daddy if she is pregnant however we've been researching and have found that it is possible for a horse to have a third testicle. We can't actually feel anything but were wondering if he does have a third testicle is it possible for him to be fertile enough to make my mare pregnant? They were out for several months so had plenty of opportunity.
 

Jos
Board Administrator
Username: Admin

Post Number: 3111
Registered: 10-1999
Posted on Tuesday, February 01, 2011 - 10:01 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Something that many people fail to understand is that when gelding a colt, although one is removing the testicles, one is not removing the ability to gain an erection and breed mares. Or to put it another way, it is not uncommon for geldings to breed mares (which is why it is often a bad idea to keep geldings in the same field as mares).

While there are rare instances of more than 2 testicles being present in a stallion, it is rare. Typically in that case, the extra testicle is going to be abdominally retained, so although it may be producing testosterone, it will not be producing viable sperm. There are blood tests to determine if this is a possibility which your veterinarian should be able to assist you with.

The chances are good though, that what you have is a typical old horny gelding...
 

mynutmeg
Neonate
Username: Mynutmeg

Post Number: 5
Registered: 01-2011
Posted on Tuesday, February 01, 2011 - 11:39 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

He's definately horny lol.
We're waiting to see if she is pregnant and then if she is what the foals like before getting the vet in. His line seem to really stamp a very orange chestnut coat so if it is his it should be fairly easy to tell.
It would be much simpler if it's not tho, as if he is a complete freak (which Jazz would enjoy being) then it's more vet bills to get it fixed.
 

Diana Gilger
Senior Stallion or Mare
Username: Kdgilger

Post Number: 3745
Registered: 01-2008
Posted on Wednesday, February 02, 2011 - 12:21 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

You will not be able to tell from coat color alone, unless you have had color testing done to see what colors and characteristics both stallions AND the mare carry. you'll have to do a paternity DNA test to know for sure!
 

mynutmeg
Neonate
Username: Mynutmeg

Post Number: 6
Registered: 01-2011
Posted on Wednesday, February 02, 2011 - 10:50 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

If it's looks like it's his we would be doing the paternity. Jazz is a tb from secretariat lines (he's his granddad or something like that) and his whole line are orange regardless of the mare.
 

Diana Gilger
Senior Stallion or Mare
Username: Kdgilger

Post Number: 3746
Registered: 01-2008
Posted on Wednesday, February 02, 2011 - 11:59 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

impossible...any homozygous red horse still has options of black, bay and sorrel with a black mare...
 

Holly
Senior Stallion or Mare
Username: Bonny

Post Number: 2363
Registered: 03-2008
Posted on Wednesday, February 02, 2011 - 10:02 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Sorry to say mynutmeg but even if the stallion is homozygous for Chestnut/ sorrel and the mare is black, and even if she was a red carrier you still only have a 50% chance of getting a chestnut foal.

50.00% -
Chestnut
25.00% -
Black
25.00% -
Bay
Go to Animal genetics color coat caculator. Play around with it.
Its never regardless of the mare.
 

Holly
Senior Stallion or Mare
Username: Bonny

Post Number: 2364
Registered: 03-2008
Posted on Wednesday, February 02, 2011 - 10:07 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Heres the link to help you out. I guess I should have posted it :-)

http://www.animalgenetics.us/CCalculator1.asp
 

terry sullivan
Neonate
Username: Rhls

Post Number: 1
Registered: 03-2011
Posted on Friday, March 04, 2011 - 07:46 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Can a stud who is cryptorchid reproduce? I share pasture land that is divided. Last month a horse owner that has a stud colt "left" the gate open that allowed his stud horse in with my mare. I'm not sure if she was in season & the 2 year old studs testicles haven't dropped. Should I start counting down the days & also see if she comes in heat? I'm not in a postion where I can do blood work right now.
 

Jos
Board Administrator
Username: Admin

Post Number: 3145
Registered: 10-1999
Posted on Friday, March 04, 2011 - 08:41 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

How has it been confirmed that the "2 year old studs testicles haven't dropped"? I would be very skeptical. Bilateral cryptorchidism is pretty rare - usually only a single testicle is retained.

My bet would be that the colt just sucks his testes up close to his body when anyone has attempted to feel them, and they are perfectly healthy and there!

I'd get your mare checked if I were you. If you are within about 30 days of the event, then you can use Prostaglandin F to end the pregnancy with relative ease (there's enough "extra" horses out there without adding to the mix!). Alternatively, if within that 30-day time frame, you can talk to your vet about simply injecting the mare without pregnancy checking first.



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