Difference between revisions of "Semen Collection - Anatomy & Physiology"

From WikiVet English
Jump to navigation Jump to search
(16 intermediate revisions by 3 users not shown)
Line 1: Line 1:
== Artificial Vagina ==
+
<big><center>[[Reproductive System|'''BACK TO REPRODUCTIVE SYSTEM''']]</center></big>
  
=== Introduction ===
+
<big><center>[[Reproductive_System#Reproductive_Technologies|'''BACK TO REPRODUCTIVE TECHNOLOGIES''']]</center></big>
  
* Simulates the [[Vagina and Vestibule - Anatomy & Physiology|vaginal conditions]] of a female in oestrus.
 
* Generally consist of
 
** Outer casing of reinforced rubber
 
** Rubber liner that can be lubricated
 
* Temperature and pressure are controlled by water placed between the casing and liner.
 
* One end is attached to a funnel-like cone that is attached to a collection vessel, usually a non-breakable test tube.
 
  
 
+
* [[Semen Collection -Artificial Vagina - Anatomy & Physiology|Artificial Vagina]]
* The desgin of the artificial vagina should accomplish the following:
+
* [[Semen Collection -Electroejaculation - Anatomy & Physiology|Electroejaculation]]
** Provide a suitable environment for stimulation of the glans penis.
 
** Provide an environment that prevents damage to the penis.
 
** Provide an environment that maximizes sperm recovery and minimizes sperm insult.
 
 
 
 
 
=== Advantages and Disadvantages of Using a Surrogate Stimulus ===
 
 
 
* Males need training to [[Copulatory Behaviour - Anatomy & Physiology#Mounting|mount]] a surrogate animal or 'dummy'.
 
 
 
 
 
* '''Advantages''' of a surrogate animal:
 
** Ease of cleaning
 
** Minimizes risk of injury
 
** Minimizes risk of disease transmission
 
** Surrogate animals do not require feed input, housing or labour for maintenance.
 
** Size can be easily adjusted to accommodate various males.
 
** Can be mobile, so location can be changed with ease.  This avoids changing location of the male - which is more dangerous, especially with Bulls.
 
 
 
 
 
* '''Disadvantages''' of a surrogate animal:
 
** Changing the location of teasers is difficult.
 
** Requires previous training of the male
 
 
 
 
 
=== Species Differences ===
 
 
 
* '''Stallion''':
 
** Leather outer casing equiped with a port to drain water. 
 
** Collection vessel and protective covering
 
** Ideally, [[Copulatory Behaviour - Anatomy & Physiology#Ejaculation|ejaculation]] takes place in a collection cone so that most semen drains directly into the collection vessel.
 
** Surrogate stimulus used to collect semen from the Stallion is referred to as a ''''phantom''''.
 
*** Phantom has a biting belt to provide the stallion with a surface to bite during [[Copulatory Behaviour - Anatomy & Physiology#Mounting|mounting]] thus providing a means for natural behaviour.
 
** It is possible to palpate the urethra at the base of the penis to detect ejaculation. There may also be associated tail movements.
 
 
 
* '''Bull''':
 
** Black casing
 
** Rubber liner
 
** Collection cone and collection vessel
 
** Water is placed between the casing and the liner.
 
** Proper temperature critical for successful [[Copulatory Behaviour - Anatomy & Physiology#Ejaculation|ejaculation]].
 
** Protective covering placed over the cone and collection vessel to prevent [[Artificial Insemination - Anatomy & Physiology#Seminal Extenders|cold shock]] of the semen.
 
 
 
* '''Boar''':
 
** Bulb that can apply pressure to the artificial vagina.
 
*** High pressure is obligatory for stimulation of the glans penis and [[Copulatory Behaviour - Anatomy & Physiology#Ejaculation|ejaculation]] in the boar.
 
** Outer casing and liner
 
** Protective covering that houses the collection vessel.
 
 
 
* '''Ram and Buck''':
 
** Rubber casing with a valve through which water can be added or emptied.
 
** Rubber liner and collection vessel.
 
** Protective covering
 
 
 
== Electroejaculation ==
 
 
 
* Electrical stimulation of the [[Accessory Sex Glands - Anatomy & Physiology|accessory sex glands]] and the pelvic urethra.
 
*Used in males of high genetic value that cannot physically perform [[Copulatory Behaviour - Anatomy & Physiology#Mounting|mounting]] and [[Copulatory Behaviour - Anatomy & Physiology#Ejaculation|ejaculation]].
 
* Electric probe is inserted into the [[Rectum_- Anatomy & Physiology|rectum]] adjacent to the prostate.
 
* Probe delivers a single electric current of around 15 volts under general anaesthetic.
 
* Simulates nearby nerves, resulting in contraction of the pelvic muscles and [[Copulatory Behaviour - Anatomy & Physiology#Ejaculation|ejaculation]].
 
 
 
{{Learning
 
|flashcards = [[Equine Reproduction and Stud Medicine Q&A 03]]
 
}}
 
 
 
[[Category:Reproductive Technologies]]
 
[[Category:Bullet Points]]
 

Revision as of 09:42, 16 July 2008