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When a semen analysis does indicate abnormal results, lifestyle factors recommendations prior to a new semen sample include a nutritional diet, as well as limitations on smoking and alcohol use. A cold bath and removal of tight-fitted underwear apparel may also be recommended within the month prior to re-examination.
A semen analysis (plural: semen analyses), also called seminogram or spermiogram, evaluates certain characteristics of a male's semen and the sperm contained therein. [1] [2] [3] It is done to help evaluate male fertility, whether for those seeking pregnancy or verifying the success of vasectomy. Depending on the measurement method, just a few ...
A 1992 World Health Organization report described normal human semen as having a volume of 2 mL or greater, pH of 7.2 to 8.0, sperm concentration of 20×10 6 spermatozoa/mL or more, sperm count of 40×10 6 spermatozoa per ejaculate or more, and motility of 50% or more with forward progression (categories a and b) of 25% or more with rapid ...
The practice of tucking can reduce both the sperm count and sperm quality. [41] Meta-analysis indicates that mobile phone exposure affects sperm quality negatively. [42] Regarding diet, malnutrition or an unhealthy diet can lead to e.g. Zinc deficiency, lowering sperm quality. Sperm quality is better in the afternoon than in the morning. [43]
A 2022 meta-analysis reported that this decline extends to non-Western countries, namely those in Asia, Africa, Central America, and South America. [93] This meta-analysis also suggests that the decline in sperm counts may be accelerating. [93] This decline in male fertility is the subject of research and debate.
Sperm sorting by flow cytometry is an established technique in veterinary practice, and in the dairy industry most female cows are artificially inseminated with sorted semen to increase the number of female calves (using sperm sorting is less common in other species of farm animals, however artificial insemination is common). [16]
Pages in category "Semen" ... Semen analysis; Semen collection; Semen cryopreservation; Semen quality; Seminal fluid protein; Sperm; Sperm Chromatin Structure Assay;
The reported analysis of animal feed typically uses raw values from laboratory results, commonly listing the moisture content, crude fat, crude protein, crude ash, fibers, and net energy. Some nutritionally-important values such as chloride, calcium, phosphorus, zinc, and copper may also be reported.