New Genes: The Black and Blue Roborovski

I’m so proud to have imported agouti pied and possibly blue agouti pied roborovski from Holland and Germany via Houten towards the end of last year. As soon as possible I shared one of these hamsters with Vectis Hamstery for the purposes of exploring the new colours black and blue. Excited because, if it’s the same blue as with other species, you cannot have that without black (blue colour is usually dilute + black).

I’m even more proud to have bred black pieds out of two of these robos. Something that was possible thanks to Tebbe Bonder of Bonder Exotics and Daniella Ringling or Piccoli Amici for letting me import these and thanks to Vectis Hamstery for getting on board with breeding them. I’ve handled breeding new colours by myself and it’s no fun!

So far it looks to be behaving as expected but with new genes it’s important to keep an open mind. I’ve bred mine to make more of the genes available to us. The plan is for one of us to breed unpatterned agouti’s carrying the genes. These agouti hamsters will, hopefully, produce black, or blue (or both) and this will prove it’s recessive. If both parents do not show the colour (the phenotype) but produce it in their offspring then the gene cannot be dominant.

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The Carab litter born here, with mum S’krivva

Unpatterned blue agouti hamsters will suggest it’s a dilute gene and we will also like to see what a self colour looks like without a pattern as no one knows for sure what markings a self roborovski would have. Close examination of the fur would be needed to ensure it’s the same colour to the roots. If it isn’t it will raise more questions that can be answered with more sensible breeding.

Once recognised by the standards committee, then further breeding can be done with other varieties. What does a husky black look like? A husky blue? A dilute husky? But it’s important to take things a step at a time and only use the wild colour (agouti) to prove your case. You can’t have a black agouti, for example. If you don’t produce a blue agouti (the expected phenotype for the dilute gene), it suggests the blue is something else. Like a gene that is only a modifier that affects black.

In any case, it’s very pretty. I’ve been in total love with roborovski since I first started breeding in 2013 and, indeed, they were my very first litter of hamsters. I’m extremely excited to be working with this and it seems far more robust than the blue I have been working with in Syrians. Health can be improved but when the health is good to start with, it makes any project like this much better to work with.

We’re not jumping to many conclusions with this. We’ve only produced a couple of litters so far and there’s a long way to go yet. I’m enjoying the journey though!

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The Carab litter the day they were split up. Two brothers and one sister. One agouti pied and two black pieds.

Photo credits:

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First Babies of 2016 and Black Breeding Plans

Hooray! Lilliput Jocasta and Doric Donnan have had a litter. He’s a short haired golden carrying black and she’s a short haired black rex. She’s had one black pup and the rest look to be golden. Still only around a week old, I’ll have photos soon.

I was asked ‘why don’t you breed black to black and have a whole litter of blacks?’

Well, the first answer to that question is always going to be because I breed for me. I choose my pairs based on what I need and what I’d like to see improved in my lines. Or, like this pairing, there are other motivations. I’ve got a few goldens in the lines now who are unrelated. I’m mating each one to a black partner. Some will already carry black and some only have a chance as I’ve introduced some size and type from cinnamon last year. I’ll be left with keepers that are either black or golden definitely carrying black. Later this year or next year all my litters will capable of producing blacks and then I’ll have a year of solely black to black pairings.

The reason that I’ve not done this yet is due to type. I’ve got nice colour and my blacks are placing or winning classes when entered because of this but I’m not far enough up the table for certificates of merit because they fall down on size and type. Size is something I’ve worked on enough but type is sacrificed with each black to black pairing because of the effect the gene seems to have on head shape. Even nice, broad, chunky headed parents produce narrow, long heads at the moment and those are the genes I’m looking to get rid of.

Have no fear, there is planning here!

Next up are Doric Grenouille and Doric Nebbiolo who are both goldens and will be paired with Doric Mr Black who has come back from Roxy Hams. As both girls are a generation down from blacks it’s anyone’s guess if there’ll be any in these two litters. Watch this space!

Proving you can’t know it all with hamsters

With hamsters, sometimes the only way to truly know what other colours they carry is to mate them with a hamster who is a different colour. To illustrate my point, I mated my black girl Nessie to a cinnamon boy Gadwin. Cinnamon is recessive, so is black. If I get doves, it means that boy parents carry each others colours. i.e. Gadwin carries black and Nessie carries cinnamon as you need two of both of these genes in one hamster to produce this colour.

I was expecting goldens but suspecting cinnamons as Nessies dad Dougal had thrown some funny honey babies before. Lo and behold I got this:-

Nesgad Litter 20-06-15 - Day 25 g

Hmmm, very orange for a golden? I jest, this is a cinnamon girl. This mating proves Nessie does carry cinnamon. Sometimes pedigrees can’t tell you everything and this is why we test mate to prove purity in lines that shouldn’t have anything in them. Recessives can carry a loooong way đŸ˜‰