Difference between revisions of "Guinea Pig Reproduction - Anatomy & Physiology"
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= Male = | = Male = | ||
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* Known as the Boar. | * Known as the Boar. | ||
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== Penis == | == Penis == | ||
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* Os penis | * Os penis | ||
* Caudoventral to the urethral opening is a pouch containing two horny '''styles''' (projections). | * Caudoventral to the urethral opening is a pouch containing two horny '''styles''' (projections). | ||
** Evert externally during erection of the penis. | ** Evert externally during erection of the penis. | ||
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== Testes == | == Testes == | ||
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* Two testes | * Two testes | ||
* Inguinal canal remains open throughout life. | * Inguinal canal remains open throughout life. | ||
* 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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== Accessory Glands == | == Accessory Glands == | ||
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* Several accessory glands | * Several accessory glands | ||
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** '''Coagulating glands''' | ** '''Coagulating glands''' | ||
** '''Bulbourethral glands''' | ** '''Bulbourethral glands''' | ||
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== Mammary Gland == | == Mammary Gland == | ||
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* Pair of long inguinal nipples. | * Pair of long inguinal nipples. | ||
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= Female = | = Female = | ||
* Known as the Sow | * Known as the Sow | ||
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== Reproductive Tract == | == Reproductive Tract == | ||
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** Single [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vagina]] | ** 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]]. | *** 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 == | == Oestrous Cyclicity == | ||
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* 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 | ||
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== Gestation and Offspring == | == Gestation and Offspring == | ||
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*** Weaned at 3 weeks. | *** Weaned at 3 weeks. | ||
* No nest | * No nest | ||
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== Mammary Gland == | == Mammary Gland == | ||
Revision as of 11:15, 21 July 2008
Male
- Known as the Boar.
Penis
- Os penis
- Caudoventral to the urethral opening is a pouch containing two horny styles (projections).
- Evert externally during erection of the penis.
Testes
- Two testes
- Inguinal canal remains open throughout life.
- In mature, breeding boars the large testes lie in the scrotum either side of the genital opening.
Accessory Glands
- Several accessory glands
- Vesicular glands: long and coiled
- Prostate gland
- Coagulating glands
- Bulbourethral glands
Mammary Gland
- Pair of long inguinal nipples.
Female
- Known as the Sow
Reproductive Tract
- Bicornate uterus
- Two uterine horns
- Single cervix
- Single vagina
- Membrane covers vaginal opening except at oestrus and during parturition.
Oestrous Cyclicity
- Polyoestrous
- Spontaneous ovulator
- Oestrous cycle length:15-16 days
Gestation and Offspring
- Long 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.
- Precocious offspring
- No nest
Mammary Gland
- Pair of long inguinal nipples.