Sperm

-Looks, Smell, Taste

-Issue of fertility

-Issue and change of composition

-Quality

-How long before fully loaded ?

-How long alive

When scopie, blood in it

-In nature

-Injaculation, éjaculation rétrograde

• Production cycle: Sperm cells are produced continuously in the testicles through spermatogenesis, which takes about 64–74 days from start (stem cell) to mature spermatozoon.
• Storage: Once mature, sperm don’t actually stay inside the seminiferous tubules of the testis for long. They move to the epididymis (a long coiled duct on the back of the testicle), where they are stored and gain motility.
• Lifespan in the male body:
  • In the testis itself, developing sperm are constantly being renewed. Any spermatozoa that are not moved into the epididymis or that become defective are broken down and reabsorbed fairly quickly.
  • In the epididymis, mature sperm can survive several weeks (about 3–4 weeks) if not ejaculated. After that, they lose viability and are reabsorbed by the body.

👉 So to answer your question directly:

Spermatozoa don’t really “stay alive” for long in the testis proper. They are continually being formed, matured, and passed to the epididymis. Once matured, they can persist in the epididymis for a few weeks, but after that they are naturally degraded and replaced.

Market:

wikipedia

Market for human sperm

Further information: Sperm donation

Some sperm banks hold up to 170 litres (37 imp gal; 45 US gal) of sperm.

In addition to ejaculation, it is possible to extract sperm through testicular sperm extraction.

On the global market, Denmark has a well-developed system of human sperm export. This success mainly comes from the reputation of Danish sperm donors for being of high quality and, in contrast with the law in the other Nordic countries, gives donors the choice of being either anonymous or non-anonymous to the receiving couple. Furthermore, Nordic sperm donors tend to be tall and highly educated and have altruistic motives for their donations, partly due to the relatively low monetary compensation in Nordic countries. More than 50 countries worldwide are importers of Danish sperm, including Paraguay, Canada, Kenya, and Hong Kong. However, the Food and Drug Administration (FDA) of the US has banned import of any sperm, motivated by a risk of transmission of Creutzfeldt–Jakob disease, although such a risk is insignificant, since artificial insemination is very different from the route of transmission of Creutzfeldt–Jakob disease. The prevalence of Creutzfeldt–Jakob disease for donors is at most one in a million, and if the donor was a carrier, the infectious proteins would still have to cross the blood-testis barrier to make transmission possible.