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| | <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> |
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| − | * [[Guinea Pig -Male- Anatomy & Physiology|Male]]
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| − | * [[Guinea Pig -Female- Anatomy & Physiology|Female]]
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| | ** Evert externally during erection of the penis. | | ** Evert externally during erection of the penis. |
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| | * In mature, breeding boars the large testes lie in the scrotum either side of the genital opening. | | * In mature, breeding boars the large testes lie in the scrotum either side of the genital opening. |
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| | ** '''Coagulating glands''' | | ** '''Coagulating glands''' |
| | ** '''Bulbourethral glands''' | | ** '''Bulbourethral glands''' |
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| | + | == Mammary Gland == |
| | + | |
| | + | |
| | + | * Pair of long inguinal nipples. |
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| | ---- | | ---- |
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| | + | = Female = |
| | + | |
| | + | * Known as the Sow |
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| | + | == Reproductive Tract == |
| | + | |
| | + | * [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology#Anatomical_Types_of_Uteri|Bicornate uterus]] |
| | + | ** Two uterine horns |
| | + | ** Single [[Female_Reproductive_Tract_-The_Cervix_-_Anatomy_%26_Physiology|cervix]] |
| | + | ** Single [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vagina]] |
| | + | *** Membrane covers [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vaginal]] opening except at oestrus and during [[Reproductive_System#Parturition|parturition]]. |
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| | + | == Oestrous Cyclicity == |
| | + | |
| | + | * Polyoestrous |
| | + | * Spontaneous [[The_Ovary_-_Ovulation_-_Anatomy_%26_Physiology|ovulator]] |
| | + | * [[Female_Reproductive_Tract_-Oestrous_Cycle_-_Anatomy_%26_Physiology|Oestrous cycle]] length:15-16 days |
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| | + | |
| | + | == Gestation and Offspring == |
| | + | |
| | + | * Long [[Reproductive_System#Gestation|gestation]] period: 59-72 days (depending on litter size) |
| | + | * Litter size: 1-6 |
| | + | ** Precocious offspring |
| | + | *** Fully furred at birth |
| | + | *** Eyes open |
| | + | *** Able to eat solid food as well as suckle from the mother. |
| | + | *** Weaned at 3 weeks. |
| | + | * No nest |
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| | == Mammary Gland == | | == Mammary Gland == |
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| | + | * Pair of long inguinal nipples. |
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| − | * Pair of long inguinal nipples.
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| | ---- | | ---- |