Зарегистрирован: 30.10.2020 Сообщения: 159 Откуда: Nor
Вообще мне нравится такой тип в Сококе, который однозначно выделяет животное среди других пород. То есть про которого с первого взгляда скажешь, что это Сококе. Это касается и снежных
Скрытый текст +
Snow Sokoke
We have investigated the genes of the snow colour because there are different theories about the gene that gives the Snow Sokoke this specific colour.
Genetics
Click the image to view a large pictureIllustration of genetic affinity. In 2008 a research study on cats' genetic origin was published. The study, "The Cat Genome Project" was based on DNA tests (swabs) done on a large number of cats/cat breeds. They grouped the breeds into a few groups that are genetically related to each other. The study showed that the Sokoke is closest related to the Asian Group of cats even though it itself has its own branch, the East African branch. Sokoke also has Arabian Wildcat genetic origins. The affinities of the Sokokes to the Asian populations ... ... are apparent and are in agreement with the STRUCTURE results. Arabian wildcats (F.s. tristami) associate with East African populations...
It is likely, given the Sokoke origin and affinity to the Asian branch, that some (maybe all) Sokoke cats brought from Kenya carry the recessive "snow" gene.
Heredity in cats
DNA helix with proteins Every cell contains a nucleus containing 38 chromosomes or 19 pairs. Each chromosome consists in turn of a spiral that is made up of four different proteins. It is the combination of these proteins that give information about everything in the cat's life. This spiral is called DNA helix and contains thousands of genes. At fertilization, the egg's 19 chromosomes unite with the 19 chromosomes in the sperm. This way the kittens get a complete set of genes from both their mother and father. Specific genetic information is placed in the same location and each chromosome pair that is formed is called allele. Some of the genes are dominant ie. dominates over a receding, recessive gene. Dominant genes only need one edition, next to the recessive, to give it effect. It is usually the primitive properties that are dominant. For a recessive gene to have effect it requires two copies ie. the kitten need the same recessive gene from both its mother and father. New mutations are usually recessive.
Mutation
Mutation is due to a genetic "fault" and is usually negative or neutral, but can also be positive and promote development. There are natural mutations amongst breeds, for example: Turkish Angora, Europe and Maine Coon. Some mutant gene features have been taken care of by people and bred on, for example: Manx, different types of Rex cats, Munchkin and American Curl. For many breeds, it's a mutation of genes that have been used to breed on and that has given the cats their pedigree-specific look.
Pigment
Although cats can have a large variety of colours, there are only two kinds of pigments, red and black. They are called melanin and it's the appearance and distribution in the hair that gives it the large variety of colours. Red melanin, makes red and cream colour. Black melanin, makes black, blue, chocolate, cinnamon, lilac and fawn colour.
Dilution D
The dilute gene causes clumping and uneven distribution of pigment granules in the hair shaft, producing dilution of all coat colors. The dilute gene is recessive and it requires two of these for the kitten to get a diluted colour. A cat with black pigmentation will get a blue colour. A cat with red pigmentation will get a cream colour. Black is recessive to Red.
Genetic series C - Siamese, Burma and Tonkinese This gene is called the "Himalayan gene" or "Lynxpoint" and is an albinism gene in the genetic series C. Typical of this gene is that these cats are born pure white but will soon get colour in the colder parts of the body. There are two types of C, Cs and Cb, which can be varied:
2 st. Cs ("Siamese" - 2 genes gives blue eyes) 2 st. Cb ("Burma colour" - 2 genes gives eyes the golden-brown and green) 1 st. Cs och 1 st. Cb ("Tonkinese" - often provide a special green colour with blue crosses)
The white gene - W The white gene gives completely white cats and prevent any other colours to appear.
Snow Sokoke Appearance
Sokoke is normally the colour "African tabby" or black tabby, which is the dominant gene for this breed. Although colour variation known as "snow" occurs from recessive genes. The "snow" gene is something that Sokoke can carry but it's extremely rare since the kitten must have the recessive gene from both parents. If both parents are black tabby, they can get kittens who have either black tabby or the snow colour, usually black tabby since it's the dominant colour. If both parents are snow Sokokes they can only get snow-coloured kittens. A kitten with snow colour is pure white at birth but begins in a few days receive their suit. The colour is temperature sensitive, which means that the colour is lighter in warmer parts of the body and darker in colder parts of the body. They are pure white when they are born because they have lived in a constant warm temperature in the mother's stomach and after a few days you can see the edge of the ears become darker. As the kittens grow into themselves, the stronger the colour at the tip of the tail, at the bottom of the legs, the ears and around the nose. They have left their classic tabby that go from light brown to gray to cream base. The colour variant "snow" has not yet been approved by any of the cat associations when it comes to the Sokoke breed. You can show a snow Sokoke but the colour makes it impossible to get more than Ex. We are a few breeders that are working on getting the snow coloured approved.
Our Conclusion
The appearance of Snow Sokoke suggests that the "snow" gene is the same gene that Siamese and other masked cats have. The fact that they are born completely white, and get a masked colour in colder parts of the body and get blue eyes suggest this. Sokokes can be carriers of the gene Cs, the same as Siamese cats, so called lynxpoint. Two of these recessive genes will produce a Snow Sokoke. An occasional Sokoke has been born with a lighter brown/pale colour or blue (so called dilution) and one Sokoke was completely black, missing the pattern gene, these are even more rare than the snow Sokokes. It does not mean that snow Sokokes has the same diluted colour variant (dilution). There are thousands of genes that determine the cat's appearance and behavior. Some have the "snow" gene (Seal Lynxpoint) and other colours are exceptional and not typical, suggesting that it's dilution or a mutation of the genes. We have also been in contact with FIFe (SVERAK) who confirmed our conclusion. They argue that snow Sokoke is a masked cat with the same gene as ex. Siamese where both parents carry the recessive gene. That dilution is not the gene that makes the colour of snow Sokoke.
Зарегистрирован: 30.10.2020 Сообщения: 159 Откуда: Nor
Развитие снежного окраса у Сококе
Сначала котенок рождается белым, затем начинают проступать отметины. Окрас такой же мраморный "африканский табби", только на белом или бежевом фоне светло коричневый, бежевый или серо бежевый рисунок. Кончик хвоста всегда черный. Глаза голубые, светло голубые или серо голубые
Зарегистрирован: 30.10.2020 Сообщения: 159 Откуда: Nor
Кажется, пока только GCCF зарегистрировала снежный окрас в породе Сококе. На сайте FIFe в стандарте только классический мраморный "африканский табби"
Надеюсь что в скором времени и снежные Сококе получат признание и их станет больше
Скрытый текст +
The rarest breed of domestic cat in the world – the Sokoke is a lean, medium sized, ticked modified classic tabby cat. It is found as a naturally occurring native breed inthe greater Arabuko-Sokoke Forest Preserve area in the coastal zone of Kenya, Africa. A peace-loving, keenly aware and intelligent shorthaired breed, the Sokoke is playful and family oriented, forming close bonds with both feline and human family members. The Sokoke is unique in that it has a see-through ticked tabby pattern, with ticking in both the ground color and pattern itself, even including the tail tip. This camouflaged pattern can also include outlining over the shoulders and below the spine. They have a tip-toe gait in the rear that becomes more pronounced when they are excited. Leggy, with large upright ears and lithe, graceful movements, they are moderately active and easy to keep.
History
The Sokoke gets its name from the Arabuko Sokoke rain forest in Kenya, very near to Mombassa. The local tribe called the cats Kadzonzo which means “looks like tree bark”, because of the distinctive ring patterns on the sides of the cats. This unique pattern has been naturally developed and is now being preserved by human intervention. The cats are almost extinct now in the wild.
In 1978 horse-breeder and wildlife artist Jeni Slater found a litter of these domestic type cats in her garden on her coconut plantation. She realised that they were unusual, so she took a pair from the litter and with the help of her staff she hand reared them. As the kittens grew they remained very different from other cats. She decided to take a pair to Europe and then she imported 3 more Sokokes forming the foundation of the breed outside Kenya. Additional cats were brought to Europe from Kenya in the early 1990s to strengthen the breed-lines.
Preliminary Recognition was granted by GCCF in 2015.
Appearance and Colours
The Sokoke is first and foremost a tabby cat. Most Sokokes are a modified Brown Tabby – with well defined classic tabby markings. The distinguishing feature of a Sokoke is that the tabby marking should be muted by ticking throughout the patterned areas. A few Snow Sokokes exist – which have a much paler body colour, with the darker markings restricted to their points, but still retaining clearly visible tabby markings throughout.
The head is a modified wedge, appearing small in relation to the body. The top of the head should be almost flat in profile, and the length of the head should be slightly longer than the width at the temples. The cheek bones should be high and well defined. The nose is broad with a relatively abrupt end to the tip. The profile shows a softly curved bridge with a straight nose of medium length. The whisker pads are well defined and not pinched. There may be more definition to the rear of the whisker pads, giving the frontal view a smooth look with gently rounded contours. The chin should be strong & broad, in line with the tip of the nose in profile. The ears are medium to moderately large. The eyes are moderately large, set wide apart, slightly slanted towards the base of the ears. Slightly almond in shape. Brilliant and expressive. The colour varies from greenish amber in the Sokoke to blue in the Snow Sokoke.
The body is medium long, slender, lithe and graceful, with well-developed chest, level back and rounded rib cage. The neck is slender, medium to slightly long in length, yet strong & muscular. These cats look fine and delicate, but, when lifted should be surprisingly solid and give the feel of strength. Males can be significantly larger than females.
The legs are long and slender with medium or fine boning. The position of the hind legs gives a “tip-toe” gait that is very characteristic of the breed. The feet are oval and medium to small in size. The tail is medium to long, and with a firm, muscular feel. Tapers, whip-like to a narrow pointed tip.
The coat is very short, close-lying and glossy, but not silky. There is little or no undercoat.
Personality
Sokokes do not show much personality change when entering a new home. They should adapt within a few days to their newliving space. They go out of their way to meet new people. Owners find it very cute that the cat will interrupt whatever it is doing to greet new visitors at the door. Owners that are looking for a best friend will love this breed. The Sokoke loves to spend all the time it can with its owner! Sokokes are good for homes with children, or for owners who already have a dog or two. Owners have said that their Sokoke will often comfort them after a bad day. They are extremely playful – and are ready to play at almost any moment in the day. Energy is not a problem for the Sokoke - at times it can appear to have an endless amount! Not many cats are as smart as this one. The Sokoke is one of the most intelligent cats in the world.
Health
Sokokes are healthy cats, strong and athletic. ICC reports no known health problems with the breed.
Зарегистрирован: 30.10.2020 Сообщения: 159 Откуда: Nor
Снежный окрас рецессивный. Оба родителя должны быть его носителями. Как я поняла, этот окрас был присущ Сококе изначально, так как эта порода является смесью африканских, арабских и азиатских кошек. И малочисленный он из за рецессивности и вообще небольшого поголовья самих Сококе
Сейчас этот форум просматривают: нет зарегистрированных пользователей и гости: 18
Вы не можете начинать темы Вы не можете отвечать на сообщения Вы не можете редактировать свои сообщения Вы не можете удалять свои сообщения Вы не можете добавлять вложения