sperm motility

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Related to sperm motility: sperm count, sperm morphology

sperm motility

A parameter assessed in semen analysis that consists of the ability of sperm to swim in a forward direction. Per the WHO, 60% is the lower reference limit for motility, assuming a lower limit of 20 million sperm cells per milliliter.


the male germ cell. See also spermatozoon.

sperm agglutinins
anti-sperm antibodies of the IgG class occur as autoantibodies in dogs infected with Brucella canis.
sperm capacitation
acquisition of the capacity to penetrate an ovum, not present at the time of delivery of the spermatozoon, and which requires a period of incubation in the female tract. It involves increased metabolic activity and motility and the removal of a chemical decapacitation factor from the spermatozoon. Capacitation must take place for the acrosome reaction to occur.
sperm concentration
a sperm count as measured in a hemocytometer; an indication of the health of the relevant testicles and a guide to the prospective fertility of the ejaculate and the donor.
sperm live-dead ratio
an indicator of the viability of the ejaculate as expressed in a slide count of a specially stained smear of the semen in which the dead and live sperm can be distinguished because of their differential staining.
sperm morphology
the normal anatomical structure of the spermatozoon. Abnormality of the structure of individual spermatozoa is used as a guide to the location and nature of the disease causing reduced reproductive efficiency.
Enlarge picture
Morphology of normal and abnormal canine spermatozoa. By permission from Nelson RW, Couto CG, Small Animal Internal Medicine, Mosby, 2003
sperm motility
the percentage of spermatozoa moving actively forward. Assessed under the microscope (400 × magnification) or by computerized imaging. See also wave motion; used to predict the probable fertility of the ejaculate.
sperm motility index
half the sum of the sample's sperm percentage motility + sperm progressive motility.
sperm penetration assay
see ovum penetration assay.
sperm stone
hard bodies composed of inspissated masses of spermatozoa found in dilated remnants of epididymal ducts and produced by chronic epididymitis.
sperm transport
within both male and female reproductive tracts some movement forward results from the movements of the spermatozoa but most progress is the result of peristaltic movements by the tubular organs in which the spermatozoa find themselves at the time.
References in periodicals archive ?
Changes in sperm motility that occurred during the storage of the sperm of boars regarded as providers of sensitive semen and those that produced semen resistant to processes taking place during ejaculate treatment presents in Table 1.
According to Hafez (2000), the successful implementation of in vitro fertilization in addition influenced by the environment and maturation of oocytes also influenced by the level of sperm motility were used in the process of fertilization.
In agreement with this hypothesis the positive effects of antioxidants like vitamin E, selenium and nutritional supplements on sperm motility of infertile men have been documented (Suleiman et al.
In a population of healthy young men, carotenoid intake was associated with higher sperm motility and, in the case of lycopene, better sperm morphology," the authors while concluding their study, (http://www.
For the sperm samples biopsied after anesthesia, sperm motility ranged from 3%-75% (Table 3).
14) Some investigators have shown that electro-ejaculation may affect sperm motility and that PVS is a better method for preserving sperm motility.
54), (56), (57) On the other hand, higher omega-3 levels and ratios are directly correlated with improved sperm motility, concentration, and structure.
9) Similar to the aforementioned studies, they concluded that advancing age leads to a decline in semen volume, sperm motility and normal sperm morphology but does not affect sperm concentration.
exercise can also positively impact their sperm motility.
Blood samples were used for health screening tests, dioxin measurements, and hormone assays, and semen samples were analyzed for sperm motility, concentration, and morphology.
Sperm motility, viability and acrosomal integrity were assessed at 0, 0.