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Discussion on Possible seminal vesiculitis
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Member:
Osakr
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Posted on Tuesday, May 2, 2006 - 2:43 pm:
I have a ten year old stallion whose vital functions are very good. Good libido, normal testicles size, no trauma and is eager and able to serve mares. He has always been a difficult breeder. ie not settling mares. Last year I started him on TMZ for 15 days following which he settled every mare he bred a total of six. This year the same thing is happening. I took a urethral swab before and after ejaculation and the later showed a heavy growth of strepptococus group while the one before ejaculation had a few strep cells. The sensitivity indicated that TMZ would work. I started him on TMZ for 15 days but had (25 mg /kg 3 times daily) no luck after that. No mares settled. Should I start again or should I change the antibiotic or is it advisable to add antibiotics to the semen extender.The other antibiotics that came out in the sensitivity were
(Amox/Clavulanate), (Amp/Sulbactam), (Sulph/Trimethoprim), Cefaclor, Cefepime, Cefoperazone, Cefotaxime, Ceftazidim, Ceftriaxone, Cefuroxime, Chloramphenicol, Gatifloxacin, Gentamycin, Imipenem, Meropenem, Penicillin, Pipracillin, Vancomycin.
What do you advise?Which antibiotic would be the most advisable.Are the swab results indicative of seminal vesiculitis
Thank you\
Omar Sakr
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Moderator:
DrO
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Posted on Tuesday, May 2, 2006 - 11:17 pm:
Strep sensitivity to TMP/SMZ as measured by the disc tests can give erroneous results. I also have to say a culture of the ejaculate is in itself not a great test: is their other signs of inflammation in the semen like a high white blood cell count?
Procaine Penicillin is cheap, safe, and if strep is your problem, likely to be effective as it concentrates in the urinary/reproductive system. I would give it to the horse. Since it is sensitive to gentamycin you could add this or better would be amikacin to the extender.
DrO
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Member:
Osakr
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Posted on Wednesday, May 3, 2006 - 11:04 am:
Thanks for your response the sensitivity came back resistant to Amikacin.
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Moderator:
DrO
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Posted on Wednesday, May 3, 2006 - 10:27 pm:
Odd to be sensitive to gentamycin but not to amikacin. Usually the opposite occurs unless their is a history of amikacin use in the horse.
DrO
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