Chow Chow and health

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<p>In the Chow Chow breed, there are some wide spread health problems. The "W.K. Hirschfeld stichting" (a part of the Dutch Kennel Club concerning health in pure bred dogs) researched the health problems in 27 different breeds during 1999. They sent a questionnaire to the owners of all Chow Chows born in the years 1994 - 1997. The results of this survey were published in 2001.</p><p><b>Health problems</b> Health problems were divided in 12 categories. Below follow the category percentage results for Chow Chows followed by the percentage from all 27 breeds that had been researched: <table cols="3" width="400" border="1"><tbody><tr><td>1 - Skin and coat</td><td align="right">21.9 %</td><td align="right">7 %</td></tr><tr><td>2 - Spine</td><td align="right">1.6 %</td><td align="right">1 %</td></tr><tr><td>3 - Limbs</td><td align="right">22.2 %</td><td align="right">3 %</td></tr><tr><td>4 - Teeth</td><td align="right">2.3 %</td><td align="right">1 %</td></tr><tr><td>5 - Nerve system</td><td align="right">1.6 %</td><td align="right">1 %</td></tr><tr><td>6 - Eyes and sight</td><td align="right">30.4 %</td><td align="right">1 %</td></tr><tr><td>7 - Ears and hearing</td><td align="right">3.6 %</td><td align="right">1 %</td></tr><tr><td>8 - Blood and immune system</td><td align="right">0.7 %</td><td align="right">0.5 %</td></tr><tr><td>9 - Cardio vascular system</td><td align="right">0.3 %</td><td align="right">0.5 %</td></tr><tr><td>10 - Lungs and bronchial tubes</td><td align="right">2.6 %</td><td align="right">0.5 %</td></tr><tr><td>11 - Digesting system</td><td align="right">4.6 %</td><td align="right">3 %</td></tr><tr><td>12 - Kidneys and urine tract canal</td><td align="right">3.6 %</td><td align="right">2 %</td></tr></tbody></table>Here we see that the main problems are in "Eyes and sight", "Limbs"quot; and "Skin and coat".</p><p><b>Eyes and sight</b> 30.4 % The largest problem in this field is entropion (the eyelids or eyelashes curl inwards and irritate the eyeball), with a percentage of 27.5 %, so 90% of all eye problems of the Chow! Entropion is not a new problem; some of Chows imported from China in the 19th century had this condition and we continue to see it today. It is a polygenetic inherited disorder (there are multiple genes involved), so it is not easy to select breeding stock simply on clear eyes.. From two entropion free parents can come offspring with entropion and from two parents with entropion can come offspring that are free. It is common in all lines, so a breeder can hardly be expected guarantee to sell an entropion free pup. Entropion can also develop when the dog is older, and I know some cases of Chows that developed this disorder when they were 7 or 8 years old. It is also worth noting that not every tearing eye is the result of entropion. When there is entropion, the affected eye must be corrected. It is not a difficult surgery, but if an affected eye is not treated, the entropion will cause a lot of pain and even possibly loss of sight in the dog. The pain and the lost of sight can also be the cause of behavior problems! So this is a very complex matter, that breeders try to avoid. It seems to become less common in the last few years.</p><p><b>Limbs</b> 22.2 % Knee ligament are the main problem here: 11.3 %, which equate to 51% of the limb problems. Other problems are HD (hip dyplasia), luxating patella, OCD (elbow dysplasia) and arthritis. The Chow-knee is vulnerable because of the straight hind legs. The problem has gotten worse because there is a tendancy to select for straighter and straighter hind legs upon double hocks (the hock bends over to the front). Lately breeders are more aware of this problem and double hocks were no longer an issue in this survey. A knee ligament can tear because of the way the dog is built (genetic hereditary problem), but also be the result of a freak accident. The Dutch Chow Chows Club established breeding rules in March 2003 that all Chow Chows used for breeding should be tested for the knee-ligaments, luxating patellas and hip dysplasia.</p><p><b>Skin and coat</b> 21.9 % Problems with skin and coat are sadly common in many breeds today. The percentage for all researched breeds is 7%. In Chows it is much more: 21.9%. The main proportion of these are allergy related skin problems: 13.3%, which comprises 60% of all skin and coat problems. The researchers say this is a genetic problem.</p><p>However, I have some other thoughts about allergies, because this problem is not only increasing in pets, humans are suffering more and more from allergies too. Environmental pollution could be one of the causes; the yearly repeated vaccinations are an other possible cause, because they stress the immune system; and last (but not least) I want to mention the changes in feeding dogs (and humans). Over the past few decades, commercial produced dog foods have become a major industry. We changed the diet of our Chows a few years ago and feed mainly a B.A.R.F.(‘bones and raw foods’) diet now.</p>等我有时间了为大家翻译，这是一篇关于松狮健康的文章！！

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