Pure-bred cats and dogs are the results of inbreeding between cats and dogs. People breed purebred cats and dogs for their selfishness and interests.
However, although cats and dogs are pure through inbreeding, their prevalence and congenital diseases have increased significantly.
Inbreeding has also changed the health of cats and dogs, which has caused non-negligible harm to the health of cats and dogs.
Inbreeding harms dogs:
Inbreeding is when two blood relatives are close to or from the same bloodline of dogs. Inbreeding allows good genes to be passed on, while bad genes and even genetic defects are also passed on. That is to say, the excellent traits of the dog will appear better and better, and the worse will be worse.
There are many disadvantages of dog inbreeding, such as congenital genetic defects. Inbreeding brings a higher risk of illness to dogs, and even that is the fatal point that dogs cannot live longer.
For example, the German Shepherd is the product of inbreeding, and the abnormal hip joint of the German Shepherd is a genetic disease with a high incidence. Therefore, to avoid the disadvantages caused by genetic diseases, the German Shepherd Association stipulates that inbreeding is prohibited within three generations.
In dog inbreeding, if you want to select a good bloodline through inbreeding, you must first have a purebred with excellent good genes Mating dogs. Otherwise, everything will fall short.
Whether the ancestral blood of the dog is pure, the advantages and disadvantages of the external dominant part of the male and female in the breeding plan, the balance of the skeleton structure, the coordination of movements, whether there are defects, etc., need to be considered.
Even if the dog has a minor defect, it has become a factor that must be considered. Generally speaking, if dogs are not facing extinction and other intractable problems, inbreeding for dogs will only do more harm than good.
The harm of inbreeding to cats:
The so-called inbreeding of cats refers to those who have blood relatives within four generations of relationship mating.
From a biological point of view, cat inbreeding is a process of accumulation of advantages and disadvantages, which can further inherit and carry forward the advantages or disadvantages of cat parents in the breeding system so that the advantages Expansion and, at the same time, the shortcomings may also be expanded.
But the proportion of good offspring is less than 5%; that is to say, the negative consequences of the accumulation of shortcomings are far more than the Accumulation of advantages resulting in far more significant outcomes, so even the offspring that survive will mostly suffer from genetic diseases.
For example, if the empty pregnancy rate is high, or even if it is pregnant, but the litter is small, the survival rate is also low, the kittens have a decline in their ability to live, their development is stunted, their body size becomes smaller, they are sickly, or there are phenomena such as abnormal births and stillbirths.
And this shortcoming of inheritance is permanent in the existence of this cat breed bloodline. In addition to special reasons, in terms of cat breeding, we should still follow the prohibition of inbreeding within three generations and try not to choose the way of inbreeding for cats.
