Olli Wuorimaa :
http://www.dogstuff.info/chd_wuorimaa.html
"At birth, the hip bone and the joint are pure cartilage. The quality of nutrition during the pregnancy has already affected the development of cartilages. When a puppy grows, the cartilage becomes bone."
"Nutrition and environment have a much larger part in the development of Hip Dysplasia than previously believed. The genetic concept of heritability's effect is now believed to be around 25 % ONLY, in comparison to previously believe 75-100 %"
"The genes are the reason for Hip Dysplasia. Without the hip displasic genes, there is no Hip Dysplasia. Hip Dysplasia is not what a puppy may get, it either has these genes or doesn't."
"The recent studies have shown the importance of nutrition to the development of puppies. Puppies fed with a lower protein diet during the greatest growth period, were found to have better and stronger hip joints than the ones fed with very high or very low protein diets."
"Proper nutrition is important to your dog’s health. A diet with only one or two meat protein sources may not be enough, three should be minimum, four is ideal. Vegetables have much lower biological values and are not recommended as pure protein sources."
"One of the theses was that the nutrition somehow affected the pH-value of the synovial fluid and this was believed to affect the thickness of the synovial fluid and its lubricating properties."
"The latest studies have shown undisputedly that wrong nutrition is one of the main culprits to hip dysplasia. Lack or excess of nutrients are the reasons that catapult the genes to create the problem."
"The speed of growth it astonishing and this speed sets the demands for the quality of nutrition. When the puppy grows, these demands change. The problem with large breeds is too fast growth. The growth process needs to be supported with heavier nutrition during the first 3-4 months. After this, the nutrition needs to be controlled downwards. We recommend a very strong puppy diet (32 % protein, 20 % fat) for the first 3-4 months. After this a drastic reduction in nutrients (protein 21 %, fat 12 %) for the following 10-14 months. By doing this, we can control the speed of growth and most importantly, do not allow any excess amounts in the nutritional level of the synovial fluids resulting into the mentioned overgrowth of cartilage and through this, bone deformation."