To produce viable spermatozoa, the testes must be maintaned at slightly lower than the body temperature.
They can produce viable sperm as young as 4 months.
This will depend upon the exact state of the testicles. If both testicles are retained within the body wall, the dog will be infertile and produce no viable sperm. If only one testicle is retained within the body wall and the other has descended into the scrotum, the dog will produce viable sperm but likely have a low sperm count. If only one testicle is retained but it is outside the body wall although not in the scrotum, the dog will produce viable sperm and may have a normal sperm count. However, cryptorchidism (retained testicles) is a highly inherited condition, and it is likely that the dog would pass this defect on to his offspring. For this reason, most veterinarians and responsible breeders will advocate for the dog to be castrated and removed from the breeding pool.
Men continue to produce viable sperm longer than women continue to produce viable eggs. Risks of birth defects increase with male age, however.
Viable sperm is sperm that is capable of fertilizing an egg and resulting in, when combined with a viable egg, offspring. Hope this helps!
Yes
Y chromosome
If a stallion is exposed to an inflamatory process that kills all his sperm it takes about 55-57 days to produce new, viable sperm. A colt generally begins producing sperm at 18 to 24 months.
First a testicular biopsy should be done to determine if he has any viable sperm. Some men with this condition do have some viable sperm in their testicles and if he does, in-vitro fertilization may be a possibility. However, if he does not have any viable sperm, then you would need to use donor sperm to become pregnant. Hope this helps.
x chromosome...!
alot of masturbation
you won't be able to have children. most people produce at least some sperm, but sometimes it is not enough or the sperm isn't viable. talking to the doctor about possible problems will help, as your semen can be tested for sperm content. most people that don't produce sperm to have children can still have normal sex like everyone else though.
An organism that is capable of reproducing or breeding.