Your Guinea Pig’s Pregnancy: The Stages of Pregnancy
Before we talk about the stages of your guinea pig’s pregnancy, let’s make certain that your guinea pig is already pregnant. If she is, then you need to know what to watch for.
However, if you’re still in the process of deciding whether to breed her, then heed our advice to not breed her.
- Pregnancy is very difficult for guinea pigs, with at least 20 percent on average of the mothers dying during birth.
- Many others survive but with complications—costly to you, painful to her.
- You must be prepared to handle the litter of newborns, and remember that males can impregnate their mothers when they are only three weeks old. Plus, brothers must be separated so they don’t fight with one another.
Think twice before you breed your guinea pig! If you’re going to breed your sow, be certain she is young enough, because when they are older than around six months their hip bones grow too closely together to permit easy birthing. If you know and accept the risks, then read on to become familiar with the stages of pregnancy.
The Mating Ritual
Before pregnancy, the two lovebirds must mate. The male will put on a manly display for the female, rumbling, standing upright before her, and approaching her with his head lowered. If the female is receptive to his suggestion, she will signal her acceptance with loud squeals. If she isn’t in the mood—er, if she’s not in heat, that is—she might very well bite him or snap at him. If he persists, she’ll dampen his enthusiasm by urinating on him!
Is She or Isn’t She?
How can you tell if the sow has become pregnant? The best clue might be when they stop the mating ritual—nature’s call has been answered, and they both quiet down. You should be watchful of the sow, because you really won’t notice any difference in her appearance for the first few weeks. If you have been breeding her or if you suspect she has mated, then do not lift her without supporting her hindquarters, in order to safeguard the fetuses.
As soon as you suspect she has mated successfully, you should replace her usual Timothy hay with alfalfa. Alfalfa has extra calcium and protein, both of which she very much needs.
Alfalfa vs Timothy Hay
Those nutrients will nourish her as well as the fetuses and also prevent hair loss. She also needs extra vitamin C; you can give at least 10mg orally. Try giving her green peppers, more broccoli and kale.
A guinea pig’s pregnancy lasts about 9 or 10 weeks. While your sow might bear from one to six pups or even more, the average litter size is 3.
Interesting fact – The largest numbers of pups a sow has given birth to was 14!
If your sow is carrying more pups rather than less, her length of pregnancy will more likely be closer to 60 days than 70.
Middle Stages of Pregnancy
Weigh your sow weekly to be certain she is gaining weight at a regular pace. Avoid over-feeding her, however, because by the time she moves into the latter stages of pregnancy it will be difficult if she’s carrying extra body fat. Don’t restrict her exercise just because she’s pregnant; she needs it to keep her weight down and her strength up. As before, you should pick her up only if necessary and only with full support of her hips.
By the time she reaches the seventh week of pregnancy, the babies will make up about half of her total body weight. You will be able to see the babies’ movement beneath her skin.
The Last Few Weeks
Once she passes the seventh week, you will easily be able to see the babies’ movement and even be able to distinguish by gentle touch what body part you are feeling. If you touch her underbelly a couple of centimeters ahead of the anus, you will be able to feel that the pelvic bones have spread apart. Once they are one to two finger-widths apart, it won’t be long until birth.
You should also provide the sow with a stress-free environment. If the male or other guinea pigs seem to get on her nerves, move them into another cage. Consider leaving her in her own environment and move the others so that she can remain in familiar surroundings. Reducing her stress makes her pregnancy and childbirth easier. Sows do not usually build nests, so provide some soft bedding in the cage. Polar fleece is perfect.
Toxemia and Ketosis
Watch your sow for signs of illness during pregnancy. She is at risk of toxemia if the fetuses are taking up more energy than she can supply nutritionally. You should watch her carefully if she is too fat and moving very little. If her body is metabolizing fat, it will generate ketones, which you can measure with strips for her urine. Have the details of a small animal vet handy – Be prepared.
Labor and Birth
Most guinea pigs give birth in the daytime hours. She will give out a cry just as she goes into labor, and it will take about five minutes to birth a pup. Each pup will have its own amniotic sac, and usually the mother removes it and eats it. If you notice a pup with the sac remaining over its face, break the membrane open with your finger nail. If labor takes much longer than 20 minutes, she may require emergency medical attention. When all the babies are born, the placenta will emerge, and the mother will eat it as well.
The pups will be fully furred and have their eyes open. They will want to eat solid food within a few hours of birth.
The mother remains at risk for some medical complications for a few days after giving birth, so keep a close eye on her. It takes two or three weeks to wean pups, and remember that the baby males must be separated by the time they are at most three weeks old.
Otherwise, you risk starting an entirely new pregnancy cycle!
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Guinea Pig Reproduction
The single most important breeding consideration is that female guinea pigs should be first bred before 7 months of age. If the first breeding is delayed beyond this time, serious (sometimes life-threatening) problems with delivery are encountered. Females should be first bred between 3 and 7 months of age. Males should be 34 months old at their first breeding. The guinea pig’s heatcycle lasts 16 days. The period during which the female is receptive to the male and will allow breeding lasts about 8 hours. Female guinea pigs can come back into heat 15 hours after giving birth. This is called a “postpartum estrus,” which means that they can be nursing a litter and pregnant at the same time!
The young are born relatively mature. They are unusually large and fully furred, and can walk about. They also have teeth and open eyes at this time. Even though newborn guinea pigs can eat solid food and drink water from a container, they should be allowed to nurse their mother for at least 2 weeks.
Difficulties During Birth
Dystocia: Female guinea pigs intended for breeding must be first bred before 7 months of age. If the first breeding is delayed beyond this time, serious (sometimes life-threatening) problems with delivery are encountered. A portion of the pregnant sow’s pelvis must widen for successful delivery of her young. This separation fails to develop in females bred for the first time after 7 months of age, usually necessitating a cesarean section to deliver the young and save the sow’s life. Signs of dystocia include straining and uterine bleeding. Veterinary help must be sought immediately. The veterinarian will evaluate the pregnant sow by direct exam and by taking x-rays. If a vaginal delivery of the young is not possible, a cesarean section will be necessary.
Pregnancy Toxemia is a serious condition that usually occurs in overweight sows in their first or second pregnancy. Signs are most likely to be noted over 1-5 days during the last 2 weeks of pregnancy or the first week following birth. These include inappetence, depression, weakness, reluctance to move, incoordination, difficulty breathing, coma and death. Some afflicted sows may show no signs and suddenly die. There is no single cause for this condition, but stress and obesity are major predisposing factors. Others include advancing age, lack of exercise, fasting just before the onset of signs, and a large number of developing fetuses. The fundamental underlying problem appears to be inadequate blood flow to the pregnant uterus. Sows showing any of these signs must be seen immediately by a veterinarian. Because treatment is often unsuccessful, prevention of pregnancy toxemia is of paramount importance. Pregnant sows should not be allowed to become obese. Fasting and stress must be avoided, especially in the last several weeks of pregnancy. Pregnant sows must be supplied with fresh water at all times and fed a nutritious diet.
Signs Your Guinea Pig Likes You
3) showing teeth
4) tossing their head up in the air
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The domestic guinea pig (Cavia porcellus), or simply guinea pig, also known as cavy or cuy for livestock term, is a species of rodent belonging to the family Caviidae and the genus Cavia. Despite their common name, these animals are not in the pig family Suidae, nor do they come from Guinea. They originated in the Andes, and earlier studies based on biochemistry and hybridization suggest they are domestic descendants of a closely related species of cavy such as C. aperea, C. fulgida, or C. tschudii and, therefore, do not exist naturally in the wild. Recent studies applying molecular markers, in addition to studying the skull and skeletal morphology of current and mummified animals, revealed that the ancestor is most likely Cavia tschudii.
Guinea pig pregnancy facts! 😀
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