HD in Genetics - Page 3

HD comes from both genetic and environmental factors.

Puppies that are too fat at a very young age -  (from 2 weeks) can develope HD.
Injuries, incorrect nutrition (too much calcium), slippery flooring, improper exersise.........all of these can help to lead to HD.

If you are the type of person that will stay up nights worrying about your puppy, then I suggest you get a 6+ month puppy that has already had hip and elbow preliminary X-rays that have been checked by a certifying organization.

As far as hip guarantees, they are only worth the paper they're written on. If the breeder isn't fair and just, you won't get compensation.

I'm sorry, I thought the post from the OP was inquiring about HD in relation to bloodlines....was not aware that dogs passed genetically, conditions imposed by environment, I'll let the experts handle this.

I didn't feel I was being negative about anything. just realistic.

Sorry, that canned response "puppies are a crapshoot" is just a huge pet peeve of mine.  Believe me, I spread more than my share of pessimism here, too.

 Daryll, if someone could say they produced a certain numbers free from HD then they must check the dogs for that, not all dogs with HD shows any problem if we aren´t talking about severe types. For the poster, you have a much greater chance to get no HD if you select a pup from a combination where you know the HD-status not only on the parents but also their littermates and relatives. Checking the HD only on the parents a few generations doesn´t tell you much. I guess you also can see what a certain stud or female previously have produced, the more litters checked the greater your odds.  But to do that you also need data on this and if you don´t have acces to that it´s more of a gamble I suppose. Don´t know how it works in other countries but in sweden for example most workingbreeders screen the majority of the offspring and you have databases where you can check HD/ED on dogs and their relatives yourself.

johan, saying "none resulting in HD" is not the same as saying "free from HD".  I never stated that any of my dogs weren't genetic carriers, only that they haven't exhibited any manifestation of the phenotype.  Honestly, I wish some people would learn how to read.

It's wonderful that Europeans test their animals for HD and ED.  I only wish they also tested for a number of other growing problems as well.  Sorry, but here in the U.S. we can't legally mandate that our puppy buyers test and certify their pets, and very few will do so of their own volition.  For example, Nancy only has three "z Westwood" dogs in the OFA database, and she's bred for how many decades?

 OK, but that is splitting words, they still have HD even if they don´t show sign of it, if many dogs have HD C or D but you don´t see it I wouldn´t say my breedings have "none resulting in HD". But yes, as long as the dog should not be breed there is good chances it will work regardless if it has some mild HD or not I suppose, it´s individual how it affects the dog.

There are no legal mandat for puppybuyers to do this, but I guess most breeders want it and most puppybuyers that are intressted in workingdogs will do it.  It would be nice if there were records of more healthaspects than HD/ED, as long as there isn´t I guess the best to do is to really know the dogs/lines you are intressted in.

Nancy R. This is a forum which suppose to help people all over the world to breed better dogs. Feel free to share your "minor grocery list" with us. I know that you have wast knowledge. So please go for it.
Prager Hans. 
http://www.alpinek9.com

HD is a polygenetic genetic problem with irregular pattern. HD is environmentally enhanced  by improper nutrition commercial usually high protein and so called "well balanced" but  "dead" nutrition, lack of sun, shock style exercise, and other influences. 
Dog with  genetically solid hips  is hard to environmentally influence into HD. That is short of physical injury. Also  It's clear that the environmental change can have  a biological effect, but genotype makeup can not be changed by environment. (Short of violent mutations caused by radiation and such) There are studies which seem to support theory that phenotype can be expressed differently  based on environmental influences.  But that is not a change of genotype and these studies  are still being questioned by scientific community.
All lines of all dogs can produce bad hips . Even wolf which in wild will have perfect hips for generations will show  HD if bred in captivity for more then 3 generation. That tells me that mother nature nature continuously eliminates potential producers of bad hips through  selective breeding.
Prager Hans
http://www.alpinek9.com
 

     Prager said,  "but genotype makeup can not be changed by environment."
Thank You Prager!!!
That was all I was saying from the beginning. The outward expression of HD can be influenced by nutrition and environment, I think most worthy breeders KNOW that. But my understanding of the original OP was they wanted some bloodlines that are known for good hips. That to me is dealing with the genotype and not the phenotype. Whew!!