Interesting Cross Breed on Craigslist
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Forum Discussion
How would you test for health without putting stress on the body? For example, if a dog is never fed food that it is allergic to how would you know the dog has allergies before you bred it? Or are you proposing to test for everything possible and only breed those dogs that are not carriers or affected in any test?
What if there is no test for the disease?
For example in Border Collies there is a recently identified genetic mutation that causes deafness between 3-5 years of age. We know the chromosomal region where the mutation is but not the exact site of the mutation. Carriers do not go deaf. How would you propose to select against this disease before we get a test; stop breeding all dogs from lines that have produced deaf dogs? How far back in those lines do we go, 2 generations, 5, 10; what do you do with the offspring from the previous generations?
Cancer in Greyhounds is another good example. Lets say a male Greyhound dies of cancer. Does that mean all of its offspring and subsequent generations should no longer be bred? What about the other offspring of the sire or dam that produced the Greyhound with Cancer?
What if no test is possible for a genetically linked disease because there are too many genes involved? For example epilepsy.
What happens to the diversity in the gene pool when entire lines and offshoots are removed? The COI goes way up and more genetic mutations are seen because carriers get bred to carriers.
What if there is no test for the disease?
For example in Border Collies there is a recently identified genetic mutation that causes deafness between 3-5 years of age. We know the chromosomal region where the mutation is but not the exact site of the mutation. Carriers do not go deaf. How would you propose to select against this disease before we get a test; stop breeding all dogs from lines that have produced deaf dogs? How far back in those lines do we go, 2 generations, 5, 10; what do you do with the offspring from the previous generations?
Cancer in Greyhounds is another good example. Lets say a male Greyhound dies of cancer. Does that mean all of its offspring and subsequent generations should no longer be bred? What about the other offspring of the sire or dam that produced the Greyhound with Cancer?
What if no test is possible for a genetically linked disease because there are too many genes involved? For example epilepsy.
What happens to the diversity in the gene pool when entire lines and offshoots are removed? The COI goes way up and more genetic mutations are seen because carriers get bred to carriers.
