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Guinea Pig Reproduction - Anatomy & Physiology (view source)
Revision as of 13:30, 22 July 2008
, 13:30, 22 July 2008no edit summary
* Pair of long inguinal nipples.
* Pair of long inguinal nipples.
* Mammary glands rudimentary.
== Reproductive Tract ==
== Reproductive Tract ==
* Ovaries are located caudolateral to the kidneys supported by a short mesovarium.
** Main blood supply to the ovary is via the uterine artery.
* Oviduct lies in close contact with the ovarian bursa.
* [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology#Anatomical_Types_of_Uteri|Bicornate uterus]]
* [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology#Anatomical_Types_of_Uteri|Bicornate uterus]]
*** Membrane covers [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vaginal]] opening except at oestrus and during [[Reproductive_System#Parturition|parturition]].
*** Membrane covers [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vaginal]] opening except at oestrus and during [[Reproductive_System#Parturition|parturition]].
* Broad ligament (mesovarium, mesosalpinx and mesometrium) contains a lot of fat.
* Anastamoses between the uterine and ovarian arteries occurs in the mesentry.
== Sexual Maturity ==
* Puberty occurs at 3 months.
* However, pregnancy has been known to occur at as early as 4-5 weeks.
== Oestrous Cyclicity ==
== Oestrous Cyclicity ==
* Polyoestrous
* Polyoestrous
* Spontaneous [[The_Ovary_-_Ovulation_-_Anatomy_%26_Physiology|ovulator]]
* Spontaneous [[The_Ovary_-_Ovulation_-_Anatomy_%26_Physiology|ovulator]]
* [[Female_Reproductive_Tract_-Oestrous_Cycle_-_Anatomy_%26_Physiology|Oestrous cycle]] length:15-16 days
* [[Female_Reproductive_Tract_-Oestrous_Cycle_-_Anatomy_%26_Physiology|Oestrous cycle]] length:15-16 days
* Long [[Reproductive_System#Gestation|gestation]] period: 59-72 days (depending on litter size)
* Long [[Reproductive_System#Gestation|gestation]] period: 59-72 days (depending on litter size)
* Placenta is haemochorial
* Receive all maternal antibodies through the placenta, not the colostrum.
* Placenta eaten by the dam and other guinea pigs after parturition.
* Litter size: 1-6
* Litter size: 1-6
** Precocious offspring
** Precocious offspring
== Mammary Gland ==
== Mammary Gland and Lactation ==
* Pair of long inguinal nipples.
* Pair of long inguinal nipples.
* Divided into fine lobules, which open via a number of small ducts into one large duct to the exterior.
* Two teats
* Composition: 4% Fat, 8% Protein, 3% Lactose