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Artificial Insemination - Anatomy & Physiology (view source)
Revision as of 13:26, 16 July 2008
, 13:26, 16 July 2008→Insemination Methods
* 0.25 ml or less is delivered by pipette.
* 0.25 ml or less is delivered by pipette.
* 70-75% conception rate is achieved with fresh semen, but only 5-15% with frozen semen due to the site of delivery being so far from the site of [[Fertilisation%2C_Implantation_and_Early_Embryonic_Development_-Fertilisation-_Anatomy_%26_Physiology|fertilization]].
* 70-75% conception rate is achieved with fresh semen, but only 5-15% with frozen semen due to the site of delivery being so far from the site of [[Fertilisation%2C_Implantation_and_Early_Embryonic_Development_-Fertilisation-_Anatomy_%26_Physiology|fertilization]].
* Laparoscopic insemination
** Small numbers of sperm (20 million) are injected into the uterine horns, compared with the 200 million in cervical insemination.
** Achieves good fertility,especially for frozen semen.
** Incise a small hole in the abdominal wall.
** Place the ewe head down, feet up so that the uterine tissue is visible.
** Inject through the uterine wall directly into the uterine horn.
* But, this is expensive and can only be carried out by a vet in the UK under local anaesthesia.
'''SWINE'''
'''SWINE'''
* Minimum volume 25-50ml
* Minimum volume 25-50ml
* Normally 80ml is delivered through the cervix to reach the [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology|uterus]].
* Normally 80ml is delivered through the cervix to reach the [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_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 ejaculate.