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Moscow cattery of the Petersburg Sphynxes - Peterbalds   «RUSSI MYSTIC»

Genetics and type of a wool

The first peterbalds of an author's line the Muscat and the Mandarine had the short millimetric wool which has almost missed to one-year-old age. Their type of quantity of a wool in the subsequent has been named "flock" as the wool remaining on a body reminded a fabric for a sofa a flock. Heterozygotic cats have very much a different woolen covering: from the easiest velvet a dust without moustaches and eyebrowes, up to velour - a short wool on a body and longer on a tail and paws, different density. To foresee, how to undress by two years velour of a cat very difficultly. They can remove a wool completely, and there can be absolutely naked on a body, but with a residual wool on paws, a muzzle and a tail (brushes - points).Since the second generation, from heterozygotic parents (that is,carrying a gene of a normal wool), kittens completely naked to the touch have started to be born. Near at hand their skin not suede, and lasts, as rubber. Such bald kittens from a birth (homozygous on a prepotent gene), that is, not having in a genotype of a gene of a normal wool, appeared enough problem for unprepared the breeder. At overdue type of development in the first weeks of a life they demand the maximal participation of the person in their cultivation. In the best way they themselves feel at long natural milk with early feeding and constant heating. If on the average a Litter from five kittens one is born in a wool or a brush, two heterozygotic "flock" or "velour", and two homozygous bald from a birth more often these kids have not enough chances to survive without the round-the-clock help of the factory owner. It is possible to explain it that fact, that at a birth naked kittens much less than the dressed colleagues, and not always can independently make the way to dummies of mother. Therefore the competent breeder should undertake in time function of second mum and bring up such kids together with cat - mum, constantly observing for their health. Very dangerously and cooling of such kittens as their skin in infancy cannot protect them from differences of external temperature. However naked kittens, safely living lives first month, do active, viable and catch up in development of the with a wool of colleagues. As against naked from a birth, "velour" and "brush" kittens since a birth differ high ability to live, usually, do not deliver to factory owners of additional efforts.
The gene bald operates not only on a wool, but also on moustaches and eyebrowes-у heterozygotic peterbalds they strongly wavy, and from first minutes after a birth it is possible to define the carrier of a gene without a wool (it especially important as at sphynxes the kittens who are not carrying a gene bald) can be born and a direct wool. At homozygous peterbalds moustaches or are absent or strongly thin and are broken off. Now the breeders, engaged selection of the Russian sphynxes, have started to be declined to idea about plurality of the genes influencing display naked. Most likely, it is necessary to speak about conditional (or incomplete) domination of a gene naked together with action of some genes - modifiers. And it, perhaps, one of the main secrets of mysterious Russian sphynxes!. If we have suggested, that naked the Russian sphynxes is caused by one prepotent gene at crossing naked individuals and cats with a normal wool kittens only two types - woolless and with a usual direct wool should be born. However, as practice shows, it does not occur. Kittens are born absolutely different types by quantity of a wool: kittens with a normal wool, with a curly wool, "velour" or "flock", completely woolless. In turn, the kittens who have been born with a "curly" wool, it is possible to divide too into some types by quantity of a wool: Undressing in full or in part with the years, not undressing kittens sites partial bald with a curly wool and with a soft wavy wool. It would be difficult to explain such variety in types of quantity of a wool presence only two genes responsible for formation of a wool. Probably, it is necessary to consider a gene Russian ласый Hr as conditionally prepotent, in relation to a gene hr (presence of a wool). It is logical to assume, that there is a number of genes - modifiers of a gene bald under which influence action of gene Hr either amplifies, or weakens. From this point of view all rises on the places, and to become clear, such variety whence undertakes as quantity of a wool at sphynxes and why from two naked (not bald from a birth, and undressed with the years) cats kittens with a usual wool and why the present bald sphynxes from a birth are born extremely seldom can be born both kittens a brush, and. And, the main thing, this theory can give a solution how from two parents - a brush bald children can appear on light.

It is written at participation of materials of article Aleny Isaeva. Cattery peterbald " Horochiy Troll"

In photos kittens of different type of a wool of a cover are submitted:

1. The tortie kitten a brush has a rigid curly wool on all body (probably partial bald with the years, it becomes possible becomes a brush - point) a photo 2 in 4,5 year - female brush

Velour the kitten has the smallest a flock of wool on a body and a short wool on paws (probably full bald about age, small "socks" on paws are probable) a photo 2 in 1 year

Black tabby the kitten has no wool, but a skin to the touch velvet, a root of hair are kept because of what a kitten is brightly painted. Has no moustaches and eyebrowes. A flock a kitten. a photo 2 in 1,5 year

A kitten bald from a birth, "rubber", homozygous.

COMMENTS

1. BRUSH- the kitten is covered with a wool: short or long, soft or rigid. The adult animal remains same. Or on a back and a neck there are sites partial bald.

2. BRUSH - POINT a kitten practically does not differ from a brush, can have shorter wool on a back and a head, a tail in a wool. Adult peterbalds has a dense wool only on a muzzle, paws and, probably a tail, that is on "points". A body bald completely or it is covered with a thin flock.

3. VELOUR - the kitten has a short wool on all a body, longer and dense on paws and a tail. The adult animal can have a short wool on paws and a tail, can become bald, having remained in "socks" or "golfs", extremely seldom to become absolutely bald, but such cases not exception.

4.FLOCK - the kitten, as against three ahead of going types, has "gummanoid" features of a muzzle and increased a wrinkle, that is has the type approached to a naked animal. As a rule, has no moustaches and eyebrowes. A wool if she can so be named, no more than 2 mm on all body. A kitten to the touch silk, very pleasant, similar to a good velvet. Such kitten cannot be mixed with removal of hair a kitten (that happens at the unfair factory owners trying thus to raise the price to a kitten).

Also there is still a set as though transitive types of a wool, frequently it happens to guess difficultly what the kitten in an adult condition becomes. But only at bald and the flock of kittens is a lot of wrinkles and "cocmic" a muzzle.

Photos and comments Anna Panina.Text translation is made the electronic dictionary,excuse !

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