Генетика

[Yulja c Dizelem]

Первоначальное сообщение от Yuina
Юля, афганка лёжа отдавалась!

самое интересное, что СТОЯЛА!!
МНЕ В ПОДРОБНОСТЯХ ОПИСАЛИ, ЧТО ТАМ ПРОИСХОДИЛО!!
это хозяева у своей афганки- мультичемпионки так проверяли плодные дни, а они(афган и бассет) смотались до ближайшей скамейки, где все и произошло!!


Жень фото в студию, уж очень хочется такое чудо увидеть.

[Eugenia]

Фоток нет к сожалению, но у меня было три таких клиента... а сейчас я не стригу. Размером с той-пуделя, морда разной длины но длинноватая, глазки приличные, шерсть шелковистая малость как у йорков, но более упруая скорее как у пуделя, но не настолько, достаточно густая и вьется, подшерстка немного. Сохнет моментально - 15 минут все удовольствие! (это обычным собачьим феном, а не фаст драером). Уши скорее как у пуделя, но тоже разброс в поставе и размере ушного полотна. По корпусу сказать ничего не могу, так как со стандартом йорков не знакома. Все три были насыщенного коричневого оркаса. Очень приятные по темпераменту, суетливые правда малость :)

[Lissa]

я вот вообще не понимаю,зачем заводить йорка или мальтеза ,а потом каждый месяц ко мне на суперкороткую стрижку водить. не проще ли тогда сразу гладкошёрстного щена приобретать? многое в психологии влдельцев для мя загадочно.

[Eugenia]

Да? А тогда скажи мне зачем к нам приводили ротвейлеров брить..... Вот это загадка так загадка... На йорке хоть есть что стричь...

Eugenia добавил(а) [date]1122132172[/date]:

А так... Хотелось наверное красоту, но оказалось что не потянуть с уходом, или просто порода по хакартеру нравится.

[Lissa]

я сама некогда собственную ротвейлершу в период линьки брила. помогало. шерсть не лезла пару месяцев.
и собственного кота сиама щас раз в 2 месяца обриваю. но опять-таки,если бы мне хотелось длинношёрстика,я бы просто вычёсывала.

[Yulja c Dizelem]

а я своего басюку побрила месяц назад, получилось классно, только колюий очень.

Study re: Cryptorchidism @ Cornell


Here is the article from Dr Meyer-Wallen

In the laboratories at the Baker Institute for Animal Health, Cornell
University, Dr. Vicki Meyers-Wallen focuses upon inherited disorders that
affect canine reproduction. Our goal is to identify genes that have a
negative impact upon reproduction, with the final goal of producing
practical tests to identify those carrying harmful mutations. The long term
goals are to reduce, and eventually remove, such deleterious genes from
purebred dog populations, thus improving the reproductive soundness of
purebred dogs.

We are asking for breeders and owners to participate in our study by
allowing us to collect blood samples from their dogs and related dogs.
Those interested can e-mail Dr. Meyers-Wallen at vnm1@cornell.edu. We are
studying the DNA to find the gene mutations that cause cryptorchidism
(undescended testicles). Since this is the most prevalent inherited disorder
of the canine reproductive system, it would be very helpful to have a test
to detect carriers of these genes. Then breeders could plan matings in which
no cryptorchid offspring would be produced, while allowing the offspring to
receive other desirable genes that such carriers may have.

To this end, we have recently initiated studies of canine cryptorchidism,
which is the failure of one or both testes to descend into the scrotum.
Unilaterally cryptorchid dogs have only one testis in the scrotum.
Bilaterally cryptorchid dogs have no testes in the scrotum. The undescended
testes may lie within the inguinal area or within the abdomen. This is an
inherited disorder, and is inherited as a recessive trait. In the dog, both
testes normally descend into the scrotum by 2 weeks after birth (even though
one can not really feel them there at the time), but should be detectable in
the scrotum by 6 weeks of age.

Based on the few pedigree studies in dogs and experimental studies in other
animals, testis descent in the dog is thought to be controlled by at least 3
genes, the identity of which are unknown. Recessive mutations in such genes
result in cryptorchidism. Delayed descent of the testes may be a similarly
inherited trait, as there is evidence in mice that mutations in 1 or 2 of
the genes controlling testis descent in that species can result in delayed
testis descent. It has been shown in other animals, such as pigs and goats,
that the prevalence of cryptorchidism in herds can be reduced over time by
selecting against this trait. That is, cryptorchid animals and male and
female parents of cryptorchid animals were not used as breeding stock. This
approach has not been used extensively in purebred dogs. However, if both
male and female carriers could be identified by a practical test, then
matings of carriers could be more easily avoided.

The recently published canine genome sequence allows us to study dog genes
more effectively. Using this information, we and our collaborators studying
human and mouse cryptorchidism, have performed pilot studies in dogs. We
have not yet found mutations causing cryptorchidism, but we need to examine
many more dogs, their related family members, and dogs of several breeds. In
further studies, we plan to include dogs from family lines that have this
problem, as well as a few lines that do not. All participants are purebred
dogs, but their identity and that of their owners is held in confidence.
That is, the identity of dogs and owners will be not be revealed by the
researchers at any time. Using DNA markers and linkage analysis techniques,
as we have in other projects, we plan to examine DNA for markers that allow
us to identify the chromosome location of genes responsible for
cryptorchidism. Once the locations are identified, the DNA sequence of those
regions is examined more closely to find specific genes and their mutations.

An example of another project in our lab in which this type of analysis is
being used is our studies of inherited hermaphroditism (Sry-negative XX sex
reversal, visit our website at
http://bakerinstitute.vet.cornell.ed...ers_wallen.htm
l

Our final goal in this project will be to produce practical tests to easily
identify male and female carriers of this trait. In the end, it would be
very helpful to have a test to detect carriers of these genes so that the
breeder could plan matings in which no cryptorchid dogs would be produced,
and still have the benefit of other desirable genes that such carriers may
have. We hope that our research will benefit purebred dogs by facilitating
the production of reproductively sound lines of all breeds. Cryptorchid dogs
with a single testis descended, while of lower fertility, can reproduce.
However, like begets like. The use of affected dogs as breeding stock will
eventually lead to increasing numbers of unilaterally and bilaterally
cryptorchid dogs. The American Veterinary Medical Association states that it
is unethical for a veterinarian to surgically correct this condition without
also neutering the animal, to prevent treated cryptorchid dogs from being
deceptively presented as reproductively normal. Although medical treatments
have been proposed for this condition in the dog, there is no evidence that
any are efficacious. Neither surgery nor medical treatment will alter the
affected dog's genetic makeup. Thus, reproduction from affected dogs and
treatment of affected dogs may not be in the long term best interest of the
breeder, or the breed. Breeding of animals with late descending testes is
likely to produce more animals with this condition, and worse, dogs in which
the testes fail to descend at all. In the end, a test to detect carriers of
these genes should lead to fewer cryptorchid dogs and improve reproductive
soundness in all breeds.

[russgaja]

[russgaja]

и ето все пудел

[russgaja]

ето с коричневымi paty-color

[russgaja]

[russgaja]

.

[mayfieldtoys]

обалдеть! Такого тигрового окраса я ещё не встречалв
У нас в Кливленде много экзотики,но это - ваще...

[mayfieldtoys]

Это мой ДоМажорик с мамой 5 лет назад.

[mayfieldtoys]

Здесь ему 3 года