It is currently Sun Aug 01, 2021 7:50 am

All times are UTC [ DST ]





 Page 1 of 1 [ 2 posts ] 
Author Message
 Post subject: Does Becoming Pregnant Without a Buck
PostPosted: Sat May 12, 2018 10:09 am 
Platinum Member
Platinum Member
User avatar

Joined: Thu Jan 29, 2015 1:26 am
Posts: 436
Location: Maryland, United States
Has thanked: 0 time
Been thanked: 55 times
Share on FacebookShare on Twitter
I have noticed that a few of my does are having second litters soon after their first litter is almost weaned. However, during the time period, they do not come in contact with a buck. I do separate the young buck offspring at 4 weeks or when their testes begin to appear.

There is no chance of a rogue buck getting into their tanks. My only guess is that they have evolved superfetation. This phenomenon has occurred within multiple does in separate tanks and within different generations.

Has anyone else had experience with this behavior? TBH, it is becoming a nuisance because I wanted to breed some of these does to different bucks.


Offline
 Profile  
 

Advertisement

 Post subject: Re: Does Becoming Pregnant Without a Buck
PostPosted: Sat May 12, 2018 6:47 pm 
Forum Addict
Forum Addict

Joined: Mon Aug 15, 2016 3:39 am
Posts: 407
Has thanked: 4 times
Been thanked: 23 times
I haven't experienced exactly what you're describing though I do have one doe that had something similar going on with her. I checked on her in the morning, she was very large, likely going to give birth within the day, I came back from school and no kits were present, she was slim again. No mutilation or killing of her offspring had taken place to my knowledge as I couldn't find any remains, just some blood. I took her out of the nursery cage, assuming she'd cannibalized the litter, and put her in the bin with my nonbreeding does. Then a few days later, she was looking round and had a small amount of blood discharging from her vagina. I left her alone, she got huge again, and birthed a litter of eleven yesterday.

Not quite what is happening with your does, but mine was very clearly pregnant and showed the same signs of carrying, the first time without result and the second time successful, all within a month. Some of my mice, including this one, have your line incorporated into them so it's not too far from the realm of possibility. Have you left these does in with the buck they were mated to while she was giving birth? That could be your answer if yes. I've made this mistake and the doe has another litter around a week before the original litter is weaned. Maybe a doe you thought was female is really male? I'd hate to think certain mice have developed superfetation.


Offline
 Profile  
 
Display posts from previous:  Sort by  
 Page 1 of 1 [ 2 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 6 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

cron
  • Advertisement