By Nanna M. Andersen | Published: 14.12.20 | Edited: 17.02.24
The myth was most likely adopted from the guinea pig community, where the pelvis does fuse with age. However, in the case of rats, this is not true. At 30 months of age, rats do not have a fully fused pelvis. While some cartilage may have been replaced with bone, they are still capable of giving birth. The pups can pass through the birth canal with little difficulty. It's important to remember that birthing complications can occur in females of all ages, with the most common issue being a pup getting stuck in the birth canal or the older doe getting too weak to birth the entire litter, causing contractions to cease. In such cases, the doe will need to be taken to a vet to restart the contractions, usually through the administration of oxytocin. So regarding the myth of pelvic fusion, it is important to acknowledge that breeding older females still carries risks but none related to the pelvis. Complications during pregnancy can arise regardless of the female's age. While geriatric pregnancies are generally considered high-risk, rats are usually capable of carrying the pregnancy to term without many issues. As breeders and pet owners, we form strong bonds with our rats, and sometimes it is advisable to refrain from breeding our favorite females to avoid the risk of losing them during birth. Thank you for reading! I hope you find this informativ.
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