How long are guinea pigs pregnant?
69–71 day
A guinea pig's gestation is relatively long, running 69–71 days.
- The 69–71 day gestation makes the guinea pig particularly useful for modeling the effects of moderate to late preterm birth on the offspring.
- In one study, IUGR pregnancies delivered at 65–69 days while control (sham-operated) pregnancies delivered at 62–71 days.
These are the documented figures; individual animals vary and a veterinarian is the right reader of any concern.
Grounded in: pmc.ncbi.nlm.nih.gov. Every figure above appears
verbatim in the linked sources.
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