Re: {Chinchilla Longhair Interest Group} Re: Аbout cats

[Alida Delport]

Hi Cris,

I CC this to the Burmilla Group as well - just for their information; Hope you do not mind. 

I am not a genetics expert. I do not breed British SH or LH, so I have no experience there. In Chinchillas and Bumillas, my current understanding is:

1. The colour inhibitor gene is dominant. 
• If absent on both alleles, we get a Golden Chinchilla.
  
• We refer to cats with only one inhibitor gene as "Golden carriers". 
  
• A double silver carrier, if bread to ANY cat, will produce silvers.
2. The longhair gene is recessive - the shorthair gene is dominant. 
• All Chinchillas have two LH genes.
  
• If bred to SH with two SH genes: all kittens will have SH (but carry LH).
• If bred to SH with one SH and one LH gene: 25% will be LH.
3. The dilution gene plays a role it the tip coloring.
• The dilution gene is recessive.
• Must be present on both alleles to give blue hair tips, else: black.
• In Burmillas, other colours apart from black and blue tipping can occur.
4. The wide-band gene plays a role in the tip length (tipped / shaded)
• In some organizations the word "chinchilla" is a synonym for "tipped".
• DNA research still in progress to fully understand the genetics of what causes the band range to vary from tipped (aka chinchilla) to medium shaded to darkly shaded.
5. The tabby gene is present - causes the eye & lip liners to be black.
• Chinchillas carry the agouti (tabby) gene with blotched (aka classic) pattern (number 22 in the FIFE ems code).
• Burmese carry the agouti (tabby) gene with ticked pattern (number 25 in the FIFE ems code).
• The ticked pattern dominates the blotched pattern.
• Smoked cats do not carry the agouti gene. They are solid cats, not tabby. Therefore, no smokes in the Chinchilla or Burmilla gene pools.
  

​I am open to be corrected. This way I can learn. ​

Alida Delport

021 919 9385 / 083 628 2479 
"If you don’t know where you’re going, you might not get there." - Yogi Berra

On Mon, Mar 30, 2015 at 10:40 AM, 'Hristo Simeonov' via Chinchilla Longhair Interest Group <chinchilla-longha...@googlegroups.com> wrote:

Hi Alida,

Thanks for adding me to this group:) I am the guy who recommended Vanya and I am happy that she accepted:)

Regarding your examples - may be you mean that if both parents have the Inhibitor gene (silver or smoke - depending if they are with or without tabby) only than all kittens will be silver/smoke? IF only one parent has the Inhibitor gene, than it might be that none will be silver/smoke... and definitely it is not obligatory all to be such... Practice shows it to be so:)

Best wishes and good luck,

Cris /short from Hristo/

---

From: Alida Delport <alidad...@gmail.com>
To: chinchilla-longha...@googlegroups.com
Sent: Sunday, 29 March 2015, 22:06
Subject: Re: {Chinchilla Longhair Interest Group} Re: Аbout cats

Hello Vanya,

Welcome to the Chinchilla Longhair Interest Group.

I find it amazing that judges decided to change your cat's breed from Traditional Longhair to British Longhair - unless there are British Shorthair in the progeny?  It will be interesting to share with us at which show it happened, and who were the judges were.

In brief, with regards to the TLH (Traditional Longhair), here is the history:

1. In 1996 the SA Cat Council (SACC), who is a member of the WCC (World Cat Council), accepted the motion to allow pure-bred Silver Chinchillas (only black silver tipped and shaded) to be re-classified from Persian as "Chinchilla Longhair" with breed code CHL. Out-crossing to Persian Silver Chinchillas is allowed, but offspring can only be registered as CHL.
   
   
2. In 2010 we in South Africa followed the WCF breed recognition process and submitted a breed recognition proposal for the CHL breed to the WCF. In this, we also requested to include Golden as well as blue tipping. WCF accepted the proposal, but rejected the name "Chinchilla Longhair" and breed code "CHL". In stead, they allocated the name "Traditional Longhair" and breed code "TLH".
   
   
3. In 2012 the WCF opened the TLH standard to all colours found in the Persian breed.
   
   
4. In 2014 the WCF changed the TLH breed name to Original Longhair, but the breed code TLH remained. 

​It is interesting to note from a genetics point of view that the ​British Longhair is a longhaired version of the British Shorthair. Similar out-crossing history and genetic principles apply as to the Longhair Burmilla (aka Chantilly), which is the longhaired version of the Shorthair Burmilla. 

Genetics of the Silver British (LH and SH):

• When you cross a British Shorthair to pure Silver Chinchilla*
  (*I do not want to go into the more complex genetics of the Goldens for now)
• First generation all SH (dominant), all Silver (dominant)
• Take those generation babies and cross: 25% will be LH, 25% will be non-silver.

Compare to genetics ​of the Silver Burmilla (​LH and SH):

• When you cross a Burmese (which is shorthair) to a pure Silver Chinchilla*
  (*I do not want to go into the more complex genetics of the Goldens for now)
• First generation all SH (dominant), all Silver (dominant)
• Take those generation babies and cross: 25% will be LH, 25% will be non-silver.

​Regards.​

Alida Delport

On Sat, Mar 28, 2015 at 10:03 AM, Churchill, The Cat <chinchilla...@gmail.com> wrote:

Hello all,

I am glad that you contacted me.

My cats are registered as Traditional Longhair cats with color silver shaded and chinchilla. This is a breed that WCF recognizes - old type Persians called Traditional Longhair. I have a female that was recognized as British Longhair, but it comes from the Persian blood. Just on one exhibition judges decided that the kitten meets the standard of British cat and changed the breed.

Currently we expect litter Traditional Persians from registered parents as Traditional Longhair breed. 

I accepted the invitation to the group in which invite me. I am not sure however that happens. I have not used up to now google groups.

Regards

Vanya

--
You received this message because you are subscribed to the Google Groups "Chinchilla Longhair Interest Group" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chinchilla-longhair-int...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--
You received this message because you are subscribed to the Google Groups "Chinchilla Longhair Interest Group" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chinchilla-longhair-int...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.