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Rat Reproduction - Anatomy & Physiology (view source)
Revision as of 11:51, 21 July 2008
, 11:51, 21 July 2008no edit summary
<big><center>[[Reproductive_System#Small_Domestic_Mammals|'''BACK TO SMALL DOMESTIC MAMMALS''']]</center></big>
<big><center>[[Reproductive_System#Small_Domestic_Mammals|'''BACK TO SMALL DOMESTIC MAMMALS''']]</center></big>
* Teats are absent.
* Teats are absent.
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= Female =
== Reproductive tract ==
* [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology#Anatomical_Types_of_Uteri|Bicornate uterus]]
** Short uterine body
** Single [[Female_Reproductive_Tract_-The_Cervix_-_Anatomy_%26_Physiology|cervix]]
== Oestrous Cyclicity ==
* Non-seasonal polyoestrus
* [[Female_Reproductive_Tract_-Oestrous_Cycle_-_Anatomy_%26_Physiology|Oestrus cycle]] 4-5 days.
* Duration of oestrus is ~14 hours.
== Copulation ==
* Evidence that mating has occured is the 'copulatory plug'
** Forms in the vagina.
== Gestation and Offspring ==
* [[Reproductive_System#Gestation|Gestation]] length is 20-22 days.
* Litter size 6-16
* Altricial young
** Eyes open at 12-14 days.
* Earliest weaning age 21 days.
* Care not to stress mother or she may cannibalise the young.
== Mammary Gland ==
* 5 pairs of teats.