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Canine sperm morphology

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    The normal male dog attains puberty at approximately 6 — 8 months of age. Sexual maturity is generally attained at 18 — 30 months. Males may successfully breed bitches prior to sexual maturity but they will not achieve maximal fertility or daily sperm output until mature. The normal male can breed once every 2 - 5 days and maintain daily sperm output.
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    Morphological and acrosomal changes of canine spermatozoa during epididymal transit

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    Semen Evaluation

    Try out PMC Labs and tell us what you think. Learn More. During epididymal transit, functional and structural modifications leading to full maturation enable male gametes to reach, recognize and fertilize the oocytes. In dogs, little is known on the modifications of spermatozoa during the passage in the epididymis. The aim of this study was to describe the motility, morphology and acrosomal patterns of canine spermatozoa retrieved from the epididymis caput, corpus and cauda. Numbers of immature sperm with cytoplasmic droplets decreased from the proximal to the distal region of the epididymis. This difference was mainly due to a lower proportion of spermatozoa with abnormal acrosomes mainly swollen acrosomes rather than with absent acrosomes.
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    Canine semen collection and evaluation (Proceedings)

    Craigieburn Animal Hospital. Always have your pets' best interests at heart. Craigieburn, Victoria Tel: 03 Semen Evaluation.
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