Double Homozygous Rat?

[Taceas]

I don't know of any other way to explain this. =P

I produced a litter of rats by breeding my seal point male, Digit, back to his seal-point daughter. Based on the quality of the local "pet" rats, I thought it best to utilize my own stock rather than risk bringing something home.

Anyway...the father-daughter pairing yielded some interesting results. All of them ended up being albino, based on the red eyes. But some had cream colored hoods that are barely visible now in adulthood. Except for one male, his hood stayed the same color and got a tad bit more tan. And as time went on, he started to display the nose. Although, his nose is turning out to be darker than his dad's or mom's.

What do you call this? Would it be correct in assuming this is a double homo trait? Also, the mother of the daughter is a grey/blue hooded rat. And in just about every litter she has, I'll end up with a couple seal pointed offspring. Is the sealpoint dominant or recessive?

At any rate, I thought it was interesting. =)

 

[breedingcolors]

I don't know rats neither the different kind of mice or rats. But I have a mouse that has red eye and pale brown fur too. I always taught only mice with white fur could had red eye :shrugs:

Sorry, can't help you more. I could make a pic if you would want.

 

[JM :o)]

I'm no expert on Rat genetics~ there might be one here~ but my limited exp breeding these colors~ think the seal point is a simple recessive. Your Blue female would be het for the seal point in that case.

I think the Hooded/stripe in black or beige is a Co-dominant. If the animals are homozygous for it the hood/stripe is darker than if the they are only heterozygous for it (that faded hood/stripe on your little seal point is what I think the het for hood/stripe looks like)

BUT~ Do not take any of that for gospel truth~ I haven't done any breeding specifically to test either of those theories~ it's just what I speculate from observing my colonies.

~oh~ and a lot of rodents will have the red and ruby eyes even with color~ it's more odd to get a solid true white with black eyes!

 

[Taceas]

Thanks for the pseudo-help Cheryl. A lof of the babies came with the darker white hoods, you could clearly see them. But now that they've aged and as with rats, their whites yellow...the hoods and stripes on the rump is hard to see unless you have an indirect light.

I had someone who was looking to start some rats from me, so I guess I'll save this one back. He's pretty outgoing and not nippy at all, so thats always good.


Caroline, I've had several mice that weren't white have red/pink eyes. I don't know how they manage it. Maybe Sasheena will weigh in on this for a further definitive explanation.

Here are a few of mine that defy the typical albinism principle: Most seem to be that dove color (turtle dove, not dove chocolate). But I do have two strains of 'red'. One is a lighter orange that has red eyes, the other is a more burnt orange that has black eyes.

*Pictures removed*

 

[Tammy Jenkins]

That is a very handsome rat you have there. Looks like breeding is going very well for you. Is you hubby still mad at me for Digit? Think I remember him saying something about me getting something started. *LOL*

I saw in another post that you have a new cage you love. Any chance you have a pic of it and price? I'm looking for a different housing idea for my next try at rat breeding.

 

[Taceas]

Tammy,

Nah, he's not mad. And if he was, he doesn't stay mad for long.

The cage actually isn't new. I got it when I bred rats at the old house, and now Winston (the ferret) is in it. But I loved it for rats. Easy to clean, they could climb around, and go up the ramp to another level and provided a lot of room. And the spaces in the wire is small enough to keep babies in. I even kept my gerbils in it for a time, and their babies.

I did order it through the internet. I can't remember if I ordered it directly from Martin's Cages or through a ferret website. But I think I ordered it direct through Martin's. It's the Rat Retreat (R-685).

Here's a picture of it:



The top wire part comes off to clean out the tray and after 4 years, its still holding up. The top also lifts for easy access to critters on the top floor. And considering the prices for smaller, cheaper looking cages at Petsmart or Harps, this one isn't too bad off for price.

 

[Hjorrdis]

I have white, grey, and orange mice with red eyes..... who knows how it happens :/

 

[rhinecat]

A siamese of any color with a pattern is called a "trimese". It's considered a fault if you want to show them, but I gather that's not your interest.

 

[Taceas]

Nope, I'm not really a fan of "pure-breed" shows and such. They're just bred for snake food mainly, and this particular one turned out interesting enough to keep back.

The seal-point on him is actually darker than the other seals I've produced, so perhaps having a pattern in there somewhere increases it. Either way, he's a darn nifty looking thing and has a nice calmness about him I wish my female rats had.

Here are a couple updated mug-shots taken tonight:

And I just keep singing this darn song in my head.."We are Siamese if you please.."

 

[lockshockbarrel]

Hooded: hh
Berkshire (white belly): Hh
Self (no markings): HH
Siamese: c(h)c(h)
Himilayan (like Siamese, only white, and with pink eyes, not red): c(h)c
Albino: cc

I'm not sure what is causing the variation of the coat, usually just the general color is noted.