Changes

== Semen Evaluation ==

== Semen Evaluation ==

* Determine [[Reproductive_Behaviour_-_Copulatory_Behaviour_- Anatomy & Physiology#Ejaculation|ejaculate]] volume.

* Determine [[Copulatory Behaviour - Anatomy & Physiology#Ejaculation|ejaculate]] volume.

* Estimate the percentage displaying progressive motility (linear motion) at 37◦C.

* Estimate the percentage displaying progressive motility (linear motion) at 37◦C.

* Determine sperm concentration.

* Determine sperm concentration.

== Seminal Extenders ==

== Seminal Extenders ==

* Extend the number of sperm in the original [[Reproductive_Behaviour_-_Copulatory_Behaviour_- Anatomy & Physiology#Ejaculation|ejaculate]].

* Extend the number of sperm in the original [[Copulatory Behaviour - Anatomy & Physiology#Ejaculation|ejaculate]].

* Extend the life of sperm.

* Extend the life of sperm.

* Must be '''isotonic'''

* Must be '''isotonic'''

* Minimum volume 25-50ml  

* Minimum volume 25-50ml  

* Normally 80ml is delivered through the [[Cervix - Anatomy & Physiology|cervix]] to reach the [[Uterus - Anatomy & Physiology|uterus]] by gravitational flow.

* Normally 80ml is delivered through the [[Cervix - Anatomy & Physiology|cervix]] to reach the [[Uterus - Anatomy & Physiology|uterus]] by gravitational flow.

* Uses 2-3 billion sperm per insemination (60 billion in a normal ejaculate), so is relatively inefficient only giving ~20 inseminations per [[Reproductive_Behaviour_-_Copulatory_Behaviour_- Anatomy & Physiology#Ejaculation|ejaculate]].

* Uses 2-3 billion sperm per insemination (60 billion in a normal ejaculate), so is relatively inefficient only giving ~20 inseminations per [[Copulatory Behaviour - Anatomy & Physiology#Ejaculation|ejaculate]].