breeding problems

Question
I am asking on behalf of a friend. She has three full grown sows and two boars. One boar is neutered and the other is not. She has a problem with two of the females. The intact male had gotten in with them and gotten them pregnant. She made a new cage for the guinea pigs to live in. It is a large cage divided into four sections. They can't climb over the walls to get to each other.

She left the intact male with the two pregnant sows up until one of the females began delivery.
Then she moved him to one of the other sections by himself.

Seven weeks after the first pig gave birth she had a second litter. The second pig has just given birth to a litter a couple of weeks ago. She is pregnant again. How is this possible?

She has put the neutered male with the females but has not let the intact male anywhere near them.

She did not want to breed her guinea pigs. She needs to find out how these females are stilling getting pregnant so she can prevent it.

She was wondering if it is possible for them to be able to store sperm in their bodies.

Answer
It is very important to take out the intact male from the pregnant sows because they come into heat only minutes after they deliver and are able to get pregnant. It sounds like she didn't get the boar away from the sows soon enough.

Also, baby boars become sexually mature at 3 weeks and thus need to be removed from any sows.

<<Seven weeks after the first pig gave birth she had a second litter>>

It would have had to been 10 weeks, sows are pregnant for 69-72 days.

She should also get the other boar neutered.


Good Luck with the pregnancies and birth!