Wednesday 1 January 1992

Retrograde ejaculation in a Shetland sheepdog

Can Vet J. 1992 Jan;33(1):53-5

Klaas Post, Albert D. Barth, Ursula T. Kiefer, and Reuben J. Mapletoft

Retrograde ejaculation in which semen flows into the urinary bladder because of a bladder sphincter insufficiency is a cause of aspermia, or absence of ejaculate at orgasm, in man. Partial loss of the ejaculate into the bladder occurs during electroejaculation in anesthetized cats, during electroejaculation in nonanesthetized bulls and rams, and during collection of semen by manual stimulation of dogs. In a recent report, motile sperm were present in the bladder in 12 of 15 dogs after manually stimulated ejaculation, and the percentage of the ejaculate that flowed into the bladder ranged from 0-99.75%. Whether or not the dog that had retroejaculated 99.75% of spermatozoa consistently followed this pattern was not reported.

[...]

We describe herein a case of complete retrograde ejaculation in a Shetland sheepdog and attempts to produce pregnancy by promoting antegrade ejaculation and by retrieving the ejaculate from the bladder for artificial insemination.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1481168/

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