She should be at least more than 5 month old.
Less than six months
A guinea pig can be just 1 month old before they fall pregnent. But the ideal age to start your female guinea pig breeding is at 3-4 months and no earlier. You should stop breeding her when she reaches the age of 1 year old.Breeding can effect the lifespan of your friend and is not always the best thing to do.
about one year old
male g/pigs can breed as soon as they are 4 weeks old but its good to wait until they are 6-7weeks before starting. Same with females they can breed as soon as they are 5-6weeks old but again wait until they are 7-8weeks old before breeding with them.
NO NO Guinea pigs should not be bred so dont do it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:(
Yes, I would say that eight weeks is a bit too young to start breeding your guinea pig. I would suggest waiting until your guinea pig is about four months old to start the breeding process. Otherwise, if you start breeding your guinea pig too early, there are multiple complications that could arrise that might affect the health of the mother of fetus(s).
At least 15 months of age.
It is best to wait until the female guinea pig is at least 4-6 months old before breeding to ensure she is fully mature and ready for pregnancy. Breeding too early can lead to health issues for the female and her offspring. Make sure both guinea pigs are healthy and the mating process is supervised by a veterinarian or experienced breeder.
At least 15 months of age.
about 13 through 15
It is recommended to breed females during their second heat. She should be at least two years old also.
around 5, because the dog will get old, and the hips on the dog aren't that good for breeding, and mounting! you should wait before 1-4 for breeding!