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  Discussion on Stallion semen
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Posted on Monday, Jul 9, 2001 - 10:31 pm:

i am thinking of breeding to an older very well know stallion next season... with humans, my understanding is the females egg becomes older and there are more chances of problems, and that mens sperm gets older too and new studies are finding out that the age of the man is just as important as the female... soooo.. i am wondering about older horses semen....i know the motility is something to ask about, but what about aged horses passing on possible less quality semen...
i hope this does not sound like a silly question but has crossed my mind in my choosing this stallion...

Posted on Tuesday, Jul 10, 2001 - 6:46 am:

If numbers, motility, and morphology are good is a stallion with previously good conception rates I don't know of any other documented affect of age on the conception rates of stallions. There probably are some but when hidden among 5 to 10 billion sperm per ejaculate may be hard to demonstrate.
DrO

Posted on Tuesday, Jul 10, 2001 - 10:38 am:

thank you for your quick response... my question is more on the quality of the semen, as in giving her old, tired, * weakest link/gene swimmers...not so much in conception... again in older women our chances of having a Mongoloid child are greater the older we are at conception... and studies on older men are finding that they have greater chances of passing on genetic flaws with older sperm too... this stallion has strong swimmers,i have been told, they only breed him every other day during the season and to selected mares....

i am one of them women that looks under rocks to see what could or is there..

thank you again...
dres

Posted on Wednesday, Jul 11, 2001 - 6:16 am:

Though there are certainly the same affects going on in horses, there has been no notice, that I am aware of, of increasing genetic disease in breeding older horses. I suspect the fewer numbers bred make the affect hard to see.
DrO
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