Rat Reproduction - Anatomy & Physiology
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BACK TO REPRODUCTIVE SYSTEM
BACK TO SMALL DOMESTIC MAMMALS
Male
- Sexually mature at 6-8 weeks
Female
- Non-seasonal polyoestrus
- Oestrus cycle 4-5 days.
- Duration of oestrus is ~14 hours.
- Ejaculate plug forms in the vagina.
- 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.