DvlshAngel985 | 08-30-2008 09:40 PM | Quote:
Originally Posted by Nancy1999
(Post 2211988)
We had been discussing this on the previous page, if you see what is written there, I had agreed with the statement that says.
"A dog hybrid is the offspring of parents of two different purebred dog breeds, more commonly called a crossbreed or crossbred in animal breeding. Crossbreeding (parents of two different purebred breeds) results in offspring that may be stronger and healthier than either parent, an effect called hybrid vigor, but only if both parents are genetically sound." Some experts do believe there is a phenomenon called hybrid vigor; unfortunately it is not always there, so it is not predictable.
I was originally responding to post 353, so you might want to read that too for further clarification on this issue. |
From what I know about genetics, and trust me I'm no expert but I have learned how to look at certain things like probability, and the probability of this "hybrid vigor" low as they may be might actually have a higher probability of occuring when compared to the negative outcome, that being "the worst of both breeds". Of course if this is done under the watchful eye of a careful breeder.
Let me explain my train of thought.
If a responsible breeder (and my definition of a responsible breeder is one that looks for the best doggies to mate together that are both healthy and have good temperament based on what they want the outcomet to be, and who are also responsible for the puppies that may result in a given crossbreeding) is to pick healthy parents that they themselves have no expression of "bad genes" they have a smaller chance of passing on the bad genes to their offspring, or in other words the chances of getting the worst of both worlds is there but kept to a minimum. This is seen as a positive because in purebreds there is a degree of inbreeding that has been done to keep certain desired characteristics strong. This inbreeding increases the chances of negative recessive traits to be passed on, whether or not they are expressed in the next generation of pups. With more the of recessive genes out there, there is a greater chance of them being espressed (two recessive genes finding each other).
With crossbreeding, there is a bigger variation of genes, and with variation there is a bigger chance of these recessive genes not finding another recessive gene. The pups can appear healthier due to this variation which is where the "hybrid vigor" is seen.
This is just an educated guess that would explain the,... well let's just call it the "Hybrid Vigor Theory" but I do want to emphasize(as I think Nancy 1999 has very well said) that with genetics it's all a game of chance! You can increase your odds but nothing is certain. If this is confusing ask and I'll try to explain it better!:) |