HIP DYSPLASIA

 

DEFINITION AND CAUSES OF THE PROBLEM

Hip dysplasia is a defective development of the hip and femur (hip joint) and a degenerative process of the same. Dysplasia is a multifactorial disease. It has a strong genetic component, with a very high rate of heritability, as well as a number of environmental factors, such us nutrition or behavior. It seems to be demonstrated that an over-activity when pups, been accommodated on slippery floors or a diet promoting a too quick growth may be also involved in causing this health problem.

Thus, taking care of the food, looking for a balanced feed (minerals and vitamins) is very important to reach a balanced growth of the bones and soft tissues (muscles). Bad habits with our puppy may cause problems and dangerous exercises at an early stage of the life of our dog, such as jumping, climbing stairs, slips etc. must be avoided.

We must learn monitoring and controlling our young companion. The puppy will always be ready to run, jump, climb up and down ... but too much of these activities, that our young puppy enjoys so much, can maybe harmful to his health, if not properly controlled.

SYMPTOMS

A dog suffering of dysplasia means, in fact, that the his joints are badly developed.  The head of the femur does not fit properly in the cavity of the acetabulum, or hip. Thus, the hip is unstable and causes inflammation, pain and weakness.

Symptoms can be misleading, since, in some cases, the animal shows no sign of it until the problem is already in an advanced stage. When it appears, the signs we can see go from small anomalies in the movement when walking to severe lameness. Although these symptoms may indicate the existence of the disease the only truly reliable way to detect it is by radiography.

DIAGNOSIS

Nowadays, there is no genetic method showing individuals that are prone to disease, so the best monitoring method is radiology. However, by controlling the dogs to be mated, selecting individuals with good hips, you’ll probably get puppies free of dysplasia.

Radiographs should be carried out by a veterinarian, and usually under general anesthesia of the dog, as the best position to get up radiographs is rather uncomfortable for them, and need to be as still as possible.

Radiology allows breeders to establish a selection program and to avoid using as breeding animals those that are not considered suitable according to their degree of dysplasia. It is to the breeders to inform future owners of our puppies about their parents health issues, and to give advice of the most appropriate measures to be adopted with the puppy. Good advice can prevent serious future problems!



Cadera afectada Primera operación Segunda operación

Sample of an affected hip dysplasia, as well as subsequent treatments to correct the anomalous position of the bones. As it can be seen, it is an invasive treatment, expensive and involves anesthesia of the animal. Photos released by Marie-Pierre, Moselle (France), your dog tricolor. -G (gauche, izquierda) y D (droite, derecha)-. -G (left, left) and D (right, right) -.

 

Cadera libre de displasia

Hip free of dysplasia .

At Bleu Perle Border Collie we look for having healthy dogs, free of genetic diseases, and we carry out the appropriate tests.

 

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Cadera libre de la enfermedad

The hip of one of our males, healthy, and with normal bone development.

 

CL

The Neuronal Ceroid lipofuscinosis (CL) is a kind of epilepsy causing the degeneration of some cells and the eye. Affected individuals may show the first symptoms when they are about one year old: loss of motor ability, lack of vision, etc.

 The CL is a deadly disease in most of the cases as there is no treatment. Nowadays, the available genetic tests may show us whether a dog is normal, carrier or affected, so breeders can improve mates in order not to lose good genes and avoiding producing affected puppies. From a genetic point of view, dogs can be:

- NORMAL: Normal individuals never suffer from the disease nor transmit it to their descendants.

- CARRIER: Individuals carrying the disease never suffer it. A carrier should only be mated with a Normal individual. Thus none of their descendants will suffer the disease.

- AFFECTED:  Affected specimens have the genetic mutation and it is expected that throughout his life they will develop the disease, more or less severe. These individuals should only be mated, as appropriate, with normal individuals. Thus none of their descendants will have the disease.

Herein below we can see the different outcomes resulting from mating, according to the results of DNA tests. It is important to note that you should always avoid mates resulting on affected puppies.

 

AFFECTED FEMALE CARRIER FEMALE NORMAL FEMALE
AFFECTED MALE
All puppies affected
50% carrier
50% affected
All puppies carrier
CARRIER MALE
50% carrier
50% affected
25% normal
50% carrier and 25% affected
50% normal
50% carrier
NORMALMALE
All puppies carrier
50% normal
50% carrier

All puppies normal

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THE COLLIE EYE ANOMALY (CEA)

The Collie Eye Anomaly (CEA) is a congenital alteration of hereditary nature which affects the eye. It is also known as scleral ectasia syndrome. It is believed that the pathogenesis is based on a distinction that triggers abnormal mesodermal defects of variable importante.

Diagnosis is difficult, as is manifested in four types of lesions, whose presentation is so variable, and its recessive character. However, it is possible to diagnose about 6 or 7 weeks, which allows the control of the disease. The older, more difficult it is to make the diagnosis.

Nowadays, the available genetic tests may show us whether a dog is normal, carrier or affected, so breeders can improve mates in order not to lose good genes and avoiding producing affected puppies. From a genetic point of view, dogs can be:

- NORMAL: Normal individuals never suffer from the disease nor transmit it to their descendants.

- CARRIER: Individuals carrying the disease never suffer it. A carrier should only be mated with a Normal individual. Thus none of their descendants will suffer the disease.

- AFFECTED:  Affected specimens have the genetic mutation and it is expected that throughout his life they will develop the disease, more or less severe. These individuals should only be mated, as appropriate, with normal individuals. Thus none of their descendants will have the disease.

Herein below we can see the different outcomes resulting from mating, according to the results of DNA tests. It is important to note that you should always avoid mates resulting on affected puppies.

AFFECTED FEMALE CARRIER FEMALE NORMAL FEMALE
AFFECTED MALE
All puppies affected
50% carrier
50% affected
All puppies carrier
CARRIER MALE
50% carrier
50% affected
25% normal
50% carrier and 25% affected
50% normal
50% carrier
NORMALMALE
All puppies carrier
50% normal
50% carrier

All puppies normal

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TRAPPED NEUTROPHIL SYNDROME (TNS)

TNS is a lethal hereditary disease, and individuals that suffer rarely reaches the age of one year. TNS causes the degeneration of the immune system of the animal, depriving it of the necessary defenses against diseases that healthy individuals overcome without much difficulties.


TNS usually becomes apparent, with fatal consequences, after the first vaccination. It is therefore very important to control this deadly disease through genetic testing.

 

AFFECTED FEMALE CARRIER FEMALE NORMAL FEMALE
AFFECTED MALE
All puppies affected
50% carrier
50% affected
All puppies carrier
CARRIER MALE
50% carrier
50% affected
25% normal
50% carrier and 25% affected
50% normal
50% carrier
NORMALMALE
All puppies carrier
50% normal
50% carrier

All puppies normal

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