Discussion on Stallion fertility
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| Author |
Message |
    
Richard Cerveny (Ivahri)
| | Posted on Sunday, Mar 25, 2001 - 12:17 am: |   |
Hi
We had a stallion visit us aged 21years. When he arrived he seemed to be under weight for him. We adjusted feeds etc. Could not get weight on him. We asked owner re grazing habits and she said he did not graze. He was receiving 3 hard feeds per day etc plus hay. In the end after 12 weeks he went home in a very light weight condition. He apparently had a stick embedded under his tooth. He has had this removed as well as the tooth. He will apparently have a question over his fertility because his owner says her vet said he has a blood infection and will probably be infertile because of this. We feel dreadful and would like to get an idea of this possibility.
I had checked his temp. etc and all was normal. He showed interest in mares but due to his weight we decided not to serve mares with him. Our vet had a look at him. He was drenched.etc. Did not show any sign of pain etc when bitted to ride etc.
Could you give us ideas of this:
Jill Cerveny |
Robert N. Oglesby DVM (Dro)
| | Posted on Sunday, Mar 25, 2001 - 9:04 am: | |
I am sorry Jill, what is your question? If you are wondering about his fertility vs the blood infection. High fever can cause a transient, oh about 3 to 4 months, infertility but unless the infection directly did damage to the testicles they should not be permanantly effected. However at 21 and in poor condition there may be other issues. We stand a 21 year old stallion who looks like he is 8 and still very fertile.
DrO |
Edward Lake (Mredmred)
| | Posted on Wednesday, Sep 4, 2002 - 6:54 pm: | |
Hi
We are interested in a purchasing a stallion whose 25 ml of ejaculate from a test resulted as follows: color-milky gray, consistence-watery slime, smell-peculiar, spermatozoom concentration in ml-212mln., percentage of mobile spermatozooms 70%.
A friend of mine who helps us with breeding is advising us against this purchase because she feels the total number of cells in the ejaculate is low for this breed and she speculates that this horse could get worse in time and that he could become sterile over time. Please give me your opinion? |
Robert N. Oglesby DVM (Dro)
| | Posted on Thursday, Sep 5, 2002 - 6:31 am: | |
Edward, how old is this stallion? Was the gel fraction strained from the 25 ml sample or included? What was the percentage of abnormal sperm and where there any large percentage of a single type of primary defects? And just so I am clear the concentration of the sperm was 212,000,000 per milliliter?
DrO |
Robert N. Oglesby DVM
Moderator
Username: Dro
Post Number: 6804
Registered: 09-2002
| | Posted on Friday, Sep 6, 2002 - 8:48 am: | |
Ed Replies:
The stallion is seven. The gel is part of the report and was not strained as far as I know. We have a 40 ml report that is very similar. The Morfology is as follows-95.5% normal, 0.5% primary abnormal and 4% secondary abnormal. That is as much info as was given to me and the horse is from over seas and additional questions and translations have been a hurdle. Thanks, Ed
The average ejaculate for horses runs from 4 to 12 billion total sperm so your post indicates that if there are 212 million per ml and there are 25 mls of hopefully represenitive fluid, that comes to a little over 5 billion sperm.
The number on a one time ejaculate is not a very sensitive indicator of fertility as it is effected by dozens of factors. Better are the numbers from sequential ejaculates once a day for a week and best is a proven ability to settle mares.
DrO |
