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Artificial Insemination - Anatomy & Physiology (view source)
Revision as of 08:09, 18 June 2010
, 08:09, 18 June 2010no edit summary
* Fertility drops much faster either side of ovulation with frozen semen, especially in the sow.
* Fertility drops much faster either side of ovulation with frozen semen, especially in the sow.
** Hence, artificial insemination with frozen semen is rare in the sow.
** Hence, artificial insemination with frozen semen is rare in the sow.
== Advantages ==
* Enables widespread use of good sires and the spread of valuable genetic material to even small farms.
* Permits crossbreeding more economically.
* Eliminates dangerous males.
* Research tool for reproductive pathology.
* Allows introduction of new genetics to be seen quicly in a population.
* Enables the use of semen (frozen) even after the donor is dead, thus preserving selected lines.
* Allows the use of semen from incapacitated males.
* Reduces the risk of spreading disease.
* Leads to improved herd performance.
* Reduced risk of injury to handlers.
* Dramatically improved genetic quality and diversity in many animals.
* Semen can be stored for optimal timing of insemination.
* Transporting semen is much cheaper than it would be to transport animals.
== Disadvantages ==
* If one animal can sire many offspring, it will make many animals redundant.
* Foals conceived by AI are not permitted in any stud book and are not allowed to race.
* Legislation is needed to provide necessary safeguards.
* High level of knowledge and skill are required.
* Need for government intervention and support.
* Slight risk of inseminating with the wrong semen.
* Animals which need to be inseminated very soon after ovulation (horses) require veterinary input. This may be expensive.
* Frozen semen cannot be used successfully in all species and fertility rates are lower with frozen semen than when fresh semen is used.
* Optimum fertility allows only a small window of time and transport of fresh semen is difficult.
== Insemination Methods ==
== Insemination Methods ==
* Allows the insemination pipette to be inserted with relative ease.
* Allows the insemination pipette to be inserted with relative ease.
* Hindquarters of the bitch should be elevated for ~5 minutes after deposition of the semen to allow pooling in the anterior [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vagina]] and caudal [[Female_Reproductive_Tract_-The_Cervix_-_Anatomy_%26_Physiology|cervix]].
* Hindquarters of the bitch should be elevated for ~5 minutes after deposition of the semen to allow pooling in the anterior [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vagina]] and caudal [[Female_Reproductive_Tract_-The_Cervix_-_Anatomy_%26_Physiology|cervix]].