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Caramel Birmans
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- Caramel Silvertabby BirmanBased on
Blue
- = Indigo Silvertabby
| Introducing the
Silvertabbys and Smokes also led to a pleasant surprice.We got
caramelsilvertabbies out of these breeding lines.Below you can
see photos of some of our caramel babies, and you can read a
very interesting article about caramel from Hetty Berntrop.If
you wish to go there right away..Click
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Caramel is produced by the action of one or two dominant dilute
modifier genes (Dm) on blue, lilac, fawn, and cream. The Dm
gene is carried by seal, chocolate, red and cinnamon and can be
passed along unnoticed, therefore, for many generations, and can
appear when mated with a dilute, the dilute needs to be present
both sides.
Points colour is dark blue/grey with a brown cast (blue, lilac and
fawn based), through to a warmer, lighter brownish blue/grey for
lilac and fawn based, with a soft metallic sheen particularly on
the hocks which is more noticeable with maturity.
In the older cats, there is a slightly yellowish tinge to the
brown/grey colour. Overall the colour has a warm tone appearance.
NB: The Lilac and fawn based caramels (Taupe points) do have
differences, the footpads and nose leathers can be almost without
pigment, the point colours look more brownish, biscuit tinged,
the lilac based caramel points colour is slower to develop, but
faster to assert itself than a "real lilac"
Of course with Birmans there is very little colour on the hocks
unlike a Siamese counterpart, so identification is reliant more on
point colour and nose leather colour in the Dm series.
Who knows how long Dm colours have been in our genepool and gone
unrecognized? It is thought that in the tabbies, it is derived
from Chinchilla/silver matings to acquire tabby pattern, a very
similar source to the original Dm Siamese and Orientals in the
UK (bred by Pat Turner, Scintilla Cattery) who attributed her Dm
to a chinchilla outcross (specifically deriving from a US
Chinchilla import into UK who later ended up in Sydney and was
behind many imports in to NZ).
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- Fancypawz Kist by Snow
- Caramel Tabby point based on
Blue=Indigo point
- Gr Pr Arodelle Athena
- Caramel Silver Tabby
pointbased on Blue
- = Indigo Silver Tabby point
- Gr.Ch.
Fancypawz Polar Bear
- Caramel Silvertabby, based
on Blue
- = Indigo Silver Tabby point
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- Carameltabby
- based on Blue
- Carameltabby
- based on Blue
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This is how Dilute Modifier works.....
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Copyright...http://anabi.free.fr/
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Seal
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Blue
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Caramel based on Blue
= INDIGO
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Chocolate
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Lilac
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Caramel based on Lilac
= TAUPE
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Cinnamon
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Fawn
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Caramel based on Fawn
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Red
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Cream
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Apricot
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Behaviour and Inheritance of Caramel &
Apricot
- © Hetty Berntrop
The colour genes are always present in pairs: BBDD for a black
cat, bbDD for a chocolate cat, BbDd for a black cat carrying
chocolate and dilution(blue). Chocolate and cinnamon take the
same place (locus) on the chromosome.
This means that a black, blue or red cat can have one gene for
chocolate OR one gene for cinnamon.
If this cat had two genes for chocolate he would BE a chocolate
cat. If he had two genes for dilution (blue) he would BE a blue
cat; if he had one gene for chocolate and one gene for cinnamon
he would also be a chocolate cat, because chocolate is dominant
over cinnamon.
- (Although you cannot see thisin the
way the genes are written; they are both recessive to black)
The combination of two genes for dilution (or blue) and two
genes for
chocolate in a black cat produces another colour: lilac (bbdd).
The combination of two genes for dilution (or blue) and two
genes for
cinnamon in a black cat produces the fawn cat (blbldd).
In the red cat two genes for dilution produces the cream cat.
Chocolate
genes have no visible effect in a red cat. Although the late
Persian breederPiet Prosé in Holland is not the only one who
thought that red Persianscarrying chocolate displayed a much
brighter colour red.
The gene that produces caramel cats is a dominant gene on a
different locus:Dm.
This gene is dominant, which means that having one single dilute
modifying gene can alter a cat into a caramel, provided also two
genes for dilution are apparent. This happens to blue, lilac and
fawn cats that carry this gene. In cream cats, which also have
two genes for dilution, the extra Dm gene alters the cream cat
into the apricot cat.
Cats with two Dm genes are homozygous for caramel, but can only
produce
caramel kittens when mated to blue, lilac, fawn and caramel cats
or cats who carry the dilution gene.
A caramel cat with one Dm gene (a heterozygous caramel) gives
this gene to 50% of its offspring. A caramel cat with two genes
for Dm gives one Dm gene to its entire offspring.
But you cannot see this gene in red, black, brown, seal,
chocolate or
cinnamon cats, because the dilute modifier gene (Dm) is
epistatic to these colours. This simply means that the colours
black (brown), chocolate, cinnamon and red mask the Dm gene and
thus they can carry the gene that produces caramel or apricot
without showing it.
So these red, black, chocolate and cinnamon cats can carry the
Dm gene for caramel or apricot along for generations without
anybody knowing it; as long as there are no genes for dilution
(blue or cream) involved in breeding these cats, it will not
appear.
And it can come as a big surprise when a black cat carrying
caramel,
undetected for generations, and also carrying blue, is mated to
a blue cat and a caramel suddenly appears out of the blue!!
Thus caramel reveals itself only when the cat has also two genes
for blue. This gene modifies the blue (or lilac or fawn) cat
into a caramel cat. Blue changes to have a brownish tinge,
darker than lilac, mud coloured almost. In tabby cats the
caramel pattern gets a distinct metallic overlay. There is
little difference between cats that are blue-based caramels and
lilac-based
caramels. The cats that are fawn-based caramels tend to have a
much warmer ground colour and are very beautiful.
In my opinion the solid coloured caramel cats (and caramel
points too), are a bit dull compared to other colours and by far
not as attractive as tabby caramel cats are. The metallic sheen
of caramel contrasts beautifully with the warm ground colour in
tabbies. I can still remember a gorgeous oriental caramel
classic tabby I had to judge in the U.K.
There is the same variation in caramel colour as there is in
chocolate, blue or lilac coloured cats. So you will see paler
and darker caramels, just as you can see paler and darker
chocolates or lilacs.
The cats that are fawn-based caramels tend to have a much warmer
colour, pale warm brown with silvery metallic overtones. I think
them quite beautiful.
In red cats the dilute modifying Dm gene changes nothing, but it
changes cream cats to apricot: a warm cream with a metallic
sheen instead of the powdered effect of the cream.
Caramel tortie point cats can be easily identified, as apricot
is much
hotter in colour than cream, while the caramel has that metallic
overlay.
Some bodies register cats with the red gene as they appear and
call them all red tabbies. But it is more appropriate to
register them in their genetic colour, i.e. red OR red tabby.
Sometimes parents can be a clue to their genetic make-up.
In a tortie you can easily identify a tortie from a tortie tabby:
the tortie has solid black, chocolate, cinnamon, blue, lilac or
caramel patches of colour, where the red, cream or apricot parts
may be tabby. The tortie tabby MUST have tabby pattern in the
black, chocolate, cinnamon, blue, lilac or caramel parts as well.
If heritage is unclear breeding results from a red cat with a
black,
chocolate etc. cat can give a clue if this cat is red or red
tabby. And
please note the kind of tabby pattern (ticked, classic, mackerel
or
spotted), as that can be helpful when breeding further with this
cat.
Remember: tabbies can only come from cats with at least one
tabby parent;
two solid cats can never have tabby kittens between them.
It is impossible for a caramel cat to appear in a litter of two
blue
parents, two lilac parents or two fawn parents. But sometimes a
cat has not been registered in the right colour (the colour on
its pedigree) and I have seen quite a lot of cats who had lilac,
blue or chocolate spotted as colour on their pedigree but were
in fact caramel coloured cats.
For a caramel to appear in a litter, one of the parents must be
black,
chocolate, cinnamon or red and carry caramel OR be a caramel!
The same rule goes for apricot cats. Two cream cats paired
cannot produce an apricot cat, unless one of the parents is no
cream but apricot.
For apricot to appear one of the parents must be caramel,
apricot or carry the dilute modifying gene.
I have made some examples when breeding with caramel Orientals;
just add points when breeding with Siamese:
Caramel (homozygous blue based) x caramel (idem) = blue-based
caramels: 50% homozygous, 50% heterozygous
Caramel (blue based, one Dm gene) x blue = blue-based caramels
50%,
blue cats 50%
Caramel (blue based, one Dm gene0) x lilac = caramel blue-based
50%,
blue 50%, all kittens carrying chocolate
Caramel (lilac based, one Dm gene) x lilac = caramel
lilac-based 50%,
lilac 50%
Caramel (lilac-based, one Dm gene) x fawn = caramel lilac-based
50%,
lilac 50%. all kittens carry cinnamon
Caramel (lilac based + cin. + one Dm gene) x cinnamon (+dilute
gene) = 25%
chocolate, 25% cinnamon, 25% caramel, 12˝ % lilac, 12˝ %fawn.
In theory if
you have 8 kittens 2 will be chocolate, 2 cinnamon, 2 caramel, l
lilac and 1
fawn. Of these cats 1 chocolate and 1 cinnamon will carry Dm; of
the
caramels 1 will be lilac-based and 1 fawn-based caramel.
You cannot see which cats will be the Dm carriers, but you can
be sure the lilac and the fawn will be free of caramel.
So if a caramel and/or apricot cats appears in a litter one of
the cats must carry the dilute modifying gene Or one of the
parents must be a caramel or apricot cat.
In breeding caramel pointed and caramel tabby pointed kittens, I
could not see much colour difference between blue-based and
lilac-based kittens. Each time I got almost the same shade of
caramel. But that was probably due to the fact that I had cats
who carried many polygenes for light and warm. Lilac could be
clearly distinguished from caramel in pointed cats at an early
age, as it develops only slowly.
Caramel pointed kittens develop their colour as quickly as blue
or seal pointed kittens.
Caramel tabby pointed kittens can be tricky if they also carry
many
polygenes for warm and pale colouring and especially if the
cinnamon gene is also involved. Then it often takes more time
for the caramel colour to develop than 3 months.
And the colour in a caramel point changes all the time;
sometimes it is more bluish, a week later it may have changed to
more brownish overtones, which can be very confusing. When
cinnamon is also involved in Siamese you might not know what
colour kitten you have at first but have to wait a little longer.
A good help is the pad- and nose leather colour. Fawn points
have pink nose leather and paw pads, while fawn-based caramel
points have a soft mauve colour. The hairs between their pads
usually give a very good indication of the colour of the cat.
A caramel cat (aaBBddDm) x a homozygous chocolate cat (aabbDD)
gives 100% chocolate kittens with a gene for dilution (blue);
50% of the kittens are caramel carriers (aabbDdDm).
When a caramel point Siamese (aaBBcscsddDm) is mated to a
chocolate point Siamese who carries dilution (blue) (aaBBcscsDd),
you can get the following kittens: caramel point Siamese, SP
Siamese with genes for caramel & dilution (blue), SP Siamese
with gene for dilution (blue) and homozygous BP Siamese,
Although dominant, the Dm gene can only express itself when 2
genes for
dilution (blue) are present.
If this blue-based caramel cat (aaBBddDm) is mated to a blue cat
carrying chocolate (aaBbDD) we can make the following diagram:
Caramel female : aBdDm en aBd
Blue male carrying chocolate: aBd en abd
| aBBdd | aBbddDm |
------------------------------------
| aBbdd | aBBddDm |
aaBBdd = homozygous blue aaBbdd = blue
carrying
chocolate aaBBddDm = caramel aaBbddDm = caramel carrying
chocolate If
the caramel also carries chocolate she is: aaBbddDm. Mated to
homozygous
chocolate (aabbDD) the result will be:
| aBbDd | aBbDdDm |
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| abbDd | abbDdDm |
aabbDd = chocolate with gene for dilution (blue)
aaBbDd = black with genes for chocolate & dilution (blue)
aabbDdDm = chocolate with genes for dilution (blue) & caramel
aaBbDdDm = black with genes for chocolate, dilution (blue) &
caramel
This way you are able to make more diagrams yourself. Just try.
In the seventies I imported a lilac point Siamese to Holland. I
knew the breeder and the kitten's parents. I got pictures and he
looked absolutely beautiful. So I went to pick him up at the age
of 3 months, together with a pure chocolate point Siamese girl
from different parentage. All went well, but it surprised me
that at 6 months his colouring was quite
well developed.
He went to shows and became an international champion but was
refused
further titles because his colour changed so much. You must
already know what happened: he was not a lilac but a caramel
point.
My "lilac" point mated the CP girl and the result was 1 SP and 3
CP kittens! I could not believe my eyes! Later I repeated the
mating with the same result, again 1 SP and 3 CP kittens. They
were all looked at by experienced judges and were really SP and
CP. But then the father could not be a lilac! My cats all lived
in the house and the stud cats had their apartments outside in
the cattery, so the matings were all controlled.
I sent 7-generation pedigrees from both cats and a lot of hair I
clipped from my studs tail base, (I could not show him any
longer because of his strange colour) to Roy Robinson and
Patricia Turner with the question what colour cat I had.
The answer from Roy Robinson was:" He is most probably a blue
based
caramel", otherwise he could not have sired these kittens. He
was then
re-registered as a caramel point.
I had a lovely caramel tabby point from him; with my caramel
tabby point I bred many caramel point and caramel tabby point
kittens. She came from a pale coloured line from Springfield's
Bambuli (a real milk chocolate line from the famous CP Ch.
Kimoki Dagmar) and she carried many polygenes for light and warm
and her kittens always looked pale caramel.
In her litter I could always see the difference between caramel
and lilac point kittens at about 6 weeks of age. Tabby point
kittens proved to be more difficult, but when I looked at the
hairs between their paw pads that colour almost always gave me
the right indication of their true colour.
I have seen the caramel colour for the first time many years ago
when
visiting the English breeder and geneticist Patricia Turner, in
the South of England. They were called Oriental "Pastels" at the
time. Pat Turner told me that the American geneticist Don Shaw
called the caramel colour "Barrington Brown".
He saw this colour first in the USA in Chinchilla Persians. Pat
Turner used American chinchilla's imported to England in her
breeding program to develop silver in her Oriental cats. Then
this colour showed up unexpectedly. Pat Turner and her friends
carried out a lot of matings to understand the natureof this
gene.
In some Tai-Bagheera cats in Germany, also bred with the help of
American chinchilla cats (Jemari chinchilla's if I am not
mistaken) to get silver Orientals; caramel popped up there as
well.
At a meeting about caramel, organized by one of the independent
Cat clubs in
Holland in the early nineties with Pat Turner and many
independent judges in Rotterdam, Pat Turner told us more about
caramel and we discussed caramel intensively. There also the
name "taupe" was used for the first time for the blue-based
caramels. One of the Dutch breeders invented this name for her
caramels as she thought it fitted the colour of her cats better
than caramel. She had rather dark toned caramel cats (originating
from the German Tai-Bagheera lines) and the meeting agreed that
it was a good idea to call the blue-based cats with the Dm gene
taupe and to keep the name caramel for the lilac-based cats with
the Dm gene. We saw caramel, lilac, blue and taupe cats in
solid and tabby Oriental and Siamese on this meeting.
Pat Turner promised to give the information about taupe and
caramel to Roy Robinson, as she did. In Roy Robinson 3rd edition
of Genetics for Cat Breeders he referred to taupe, but for the
lilac-based caramels instead!When I bought the 4th ed. of
Genetics for Cat Breeders this year, with very interesting new
facts about many things, I discovered that taupe was still named
for lilac-based caramel, which was never the intention.
Fortunately the GCCF in the UK never used the name taupe, but
kept using caramel for the modified diluted cats.
The caramel gene has been carried by many of the first tabby
point Siamese, as a silver tabby Moggie has been used to breed
Tabby points. She must have had some Chinchilla's in her
forebears, otherwise it cannot be explained.
The only thing we know is that there lived a Chinchilla breeder
in the samestreet where the Moggie has been found. And in the
early days of catbreeding many cats were allowed to roam free.
It took a long time before the caramels where recognized by the
GCCF in the United Kingdom. They were registered as lilac point,
lilac tabby point and lilac oriental (and sometimes blue or
chocolate point) although they looked quite different. At some
point you had to look hard to find a real beautiful old
fashioned lilac coloured Siamese!
Some lilac tabby points looked like they were carrying cinnamon,
and that is what we thought in the beginning. We have some
dedicated breeders to thankfor the recognition of the caramels.
- Now we can try to breed the real
lilac coloured cats again.
© Hetty Berntrop
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