Results 211 to 220 of about 8,356 (256)
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Control and Preservation of Semen
Proceedings of the British Society of Animal Production, 1946By control of semen I mean those tests which are applied to a semen sample to determine whether the sample is likely or not to be fertile when used for insemination, and to determine the extent to which it can be successfully diluted. For those who are not familiar with the methods of artificial insemination, I will try to give a very ...
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Insemination with Cryo-Preserved Semen
1982The concept of cryopreservation of germinal cells is attributed to Spallanzani; Mantegazza was the first to suggest the use of frozen semen banks (Sherman, 1973). The results of attempted cryopreservation of semen have been quite variable and related to the development of the field of cryobiology. The discovery of the superior cryoprotective properties
S. Leto, J. D. Paulson
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Preservation and artificial insemination of sexed semen in sheep
Reproduction, Fertility and Development, 2004Sperm-sexing technology using flow cytometry is in advanced stages of development for the sperm of several species. The sorting process could compromise sperm viability and sperm require specific handling procedures both before and after sorting to maintain the integrity and function of the sorted sperm.
G, Evans +2 more
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Large-scale preservation of human semen
Cryobiology, 1972Abstract Data were obtained and analyzed from the freezing of ejaculates of men storing semen prior to vasectomies and for donor insemination. Recoveries comparable to those previously published were obtained. Individual variability in percentage of recovery of sperm was noted but no correlations between the parameters measured and percentage of ...
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Cryogenic Preservation of Low-Quality Human Semen
Archives of Andrology, 1990The article describes the technical strategies for clinical cryogenic preservation of low-quality human semen. To compensate for sperm dilution resulting from the use of a cryogenic medium, ejaculated semen was concentrated before freezing by means of continuous-step density gradient centrifugation.
S, Kaneko +7 more
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Recent progress in the preservation of ram semen
Animal Reproduction Science, 1996Abstract The processing and storage of ram semen reduce the motility and disrupt the membrane integrity of spermatozoa. It is generally assumed that these changes are detrimental and are associated with a loss of fertilising capacity. Despite many years of empirical research that has established a variety of methods for the processing, storage and ...
W.M.C. Maxwell, P.F. Watson
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Semen preservation in Macaca fascicularis.
Laboratory animal science, 1979Semen was collected from adult male Macaca fascicularis using a rectal probe for electro-ejaculation. The effect on sperm motility of varying semen extender egg yolk concentration, pH, glycerol concentration, and equilibration times of sperm with glycerol was examined.
J P, Mahone, W R, Dukelow
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Artificial Insemination and Semen Preservation
1982Of the hundreds of millions of sperm cells that leave the male genital tract during intercourse and reach the vagina, only some will be successful enough to reach the female endocervix to be stored there for continuous release. Settlage et al. (1973) and Insler et al.
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Nephrological Indications for Semen Preservation
1980Many kidney diseases can strike a man at a time which he desires to be able to procreate. This can lead to sterility in essentially two ways: The inexorable course of many renal disorders towards kidney failure with associated impotence, and the prescription in certain renal diseases of drugs whose adverse effects on spermatogenesis are known.
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