4,503
edits
Changes
Jump to navigation
Jump to search
Puberty Defining - Anatomy & Physiology (view source)
Revision as of 14:24, 4 September 2008
, 14:24, 4 September 2008→Age when Spermatozoa First Appear in the Ejaculate
== Age when Spermatozoa First Appear in the Ejaculate ==
== Age when Spermatozoa First Appear in the Ejaculate ==
* Males acquire the ability to produce seminal fluid and ejaculate before spermatozoa are available to be ejaculated.
* To determine when spermatozoa first appear, the ejaculate must be collected at least once per week.
** Easy to collect using an artificial vagina from the the boar, bull, dog, ram or stallion.
* After behavioural characteristics have developed and the male is willing to mount a receptive female/surrogate, frequent seminal collection is possible.
** Enables determination of the age at which spermatozoa first appear in the ejaculate.
== Age when Spermatozoa First Appear in the Urine ==
== Age when Spermatozoa First Appear in the Urine ==