Breeding guinea pigs
It all seems very cute and cute. You buy two guinea pigs and after two months you have five. Your children will cuddle with it all day long and absolutely love it. Unfortunately, the babies grow up and they will also start reproducing. The question then is: Do you want this? Where should you take the little guinea pigs?
Guinea pigs can reproduce quickly and are also precocious. The females are already fertile at 28-35 days, there have even been cases of 20 days that have already become pregnant. Males are on average fertile a little later between 35-50 days, if your baby male starts to growl and follow the females, he has to leave immediately. When a guinea pig is between 250-300 grams, this is already possible.
If you do not want small guinea pigs yourself, you will have to separate the guinea pigs in time. The rapid multiplication in guinea pigs is not only due to the fact that guinea pigs ripen so early, but also due to the fact that the mother can be mated about 2 hours after birth. Never put an unneutered boar with a heavily pregnant sow !! It is very simple to calculate that a bunch of two guinea pigs from the pet store can become a group of more than a hundred guinea pigs within a year.
To prevent guinea pigs from reproducing, you can have the male neutered by the vet. You will spend between 30-100 euros for this. The female can also be sterilized. However, this is a much more severe intervention for the animal.
If you still want to breed, use sows of about six or seven months old. At the first litter, guinea pigs should never be younger than six months and never older than a year. The chance of complications is then very high. If you want to breed several litters with the same sow, you should try never to have more than eight months between two different litters. The pelvis stiffens after a long time, which can cause problems at birth.
Gestation and birth
After an average gestation period of 69 days, a litter of guinea pigs is born. There are one to six guinea pig pups per litter, sometimes there are outliers of seven or eight, but often not all survive. At the first litter of a sow, often only two or three young are born. After five to six weeks after mating, you can already feel a little guinea pig bodies in the mother’s abdomen. Two weeks before the birth you will be able to feel them move very well.
With a guinea pig you will never be able to see very well when the guinea pig will give birth. One minute she may be walking around and beeping for food and the next moment when you are going to make a cup of coffee.
There is one thing you can tell if the guinea pig is at the end of her pregnancy. This is the symphysis of the pelvis. It is located in the lower center of the pelvis, slightly above the genitals, and is closed until a few days before birth. Then it slowly starts to open (it feels like two bones sliding apart. If an index finger fits between them, the young will be born within a week.
At birth, the mother squats down. After the fruit has come out, the mother pulls the baby still in an amniotic membrane out with her beak, she opens the membrane, eats the membrane and then usually immediately eats the placenta. Normally, you will not find anything bloody after a delivery. After she has done these things she will start licking the young. In multiple births, the second young follows very quickly after the first.
Guinea pigs are nest flyers. You should not be surprised if they run through the cage an hour after birth and eat the cucumber.
Risky hereditary traits
The hereditary traits of dalmatin and fungal markings are linked to lethal traits. This means that youngsters who get this gene from both parents will often not be viable or weak. So always cross Dalmatiner or fungi with other monolithic animals that do not contain the gene!
Inbreeding is when two animals are crossed that have a very close family relationship. This may therefore concern mother + son, brother + sister, etc. When there is a first degree inbreeding, this will normally not cause many problems. Sometimes it happens that generations have been inbreeding. This can go wrong. Often small, weak young are born and the litters get smaller. Birth defects can also occur.