The reason why purebred dogs are prone to carry genetic diseases is that the majority of purebred dogs have only a few or dozens of initial breeding samples at the beginning of their existence. Once the genes for certain genetic diseases are carried in the original ancestors of the breed, it is inevitable that these genetic diseases will still appear from time to time today, hundreds of years after the development of the breed, because they are genes from the original ancestors, and because of the repeated inbreeding during the development process, it is inevitable that the situation has come to the present day. If the genetic disease is from the initial ancestral generation, then even if the puppy’s grandparents grandparents and parents and other generations are diagnosed without genetic disease, the puppy still has the probability of getting, but the probability will be much lower. The parents already have genetic disease problems, and then take the offspring to breed, the puppy will have a much higher probability of getting. Theoretically, if a single parent has a problem, the puppy has a 50% chance of getting the disease (but not in practice, it varies according to the genetic strength of each parent), and if both parents have the same genetic disease problem, it is a sin to take the child. Therefore, in countries with developed breed associations, they have health checks for genetic problems before breeding dogs, and only those who pass can have offspring, and even stipulate that certain breeds with a certain appearance cannot be used to breed offspring. For example, we know that the meteorite color border shepherd, foreign countries are prohibited from breeding offspring of the same meteorite color, because the meteorite color is the external manifestation of the genetic problems carried by the breed, once the parents are meteorite color, the puppy is very likely to have a variety of genetic diseases. Of course, in the country, there are many people who do not know, so the probability of hereditary diseases has been raised again and again until now it is terrible. Comparing the appearance of each breed now and a hundred years ago, we can see a big difference in the appearance of bulldogs, which have the most genetic diseases. And this artificial selection evolution process has led to a number of genetic diseases all over the place. Take a typical example, pit bulls! Nowadays, bullfighting is very hot and can cost tens of thousands of dollars. But did you know that bullfighting is a typical genetic disease syndrome, basically all kinds of genetic diseases accounted for all over the place. For example, hip dysplasia (CHD) is a problem that can be found in any pit bull, and because of its size, it is difficult to mate naturally, so it is basically artificial. The advantages of purebred dogs ①Stable personalitiesEach breed has its own personality characteristics. For example, the Golden Retriever, a breed most known to Peaceful Moms, is a great family companion, but also an excellent breed for guide dogs, medical dogs, and search and rescue dogs. The typical personality of this breed is calm and quiet, friendly and gentle, loves children, is obedient and has an extremely high IQ. After all, as a guide dog, if the personality of a fighting dog like a Kaslo Pitbull to take charge, in the street when you encounter other dogs first leave the blind owner to fight, encounter unhappy people do not like or be angry with people first bite then, I guess the blind would rather go out alone or do not want to take such a “guide dog” it ~ and for example this The guide dog’s personality is as easy to excite as the Pomeranian Teddy small dogs, and when the dog leads the blind on the street, it rushes to drag the owner along with it, and then “woof woof woof” yells loudly to fight the enemy dog, and does not relent. Even if the blind owner is lucky enough not to be dragged to the ground, the “woof, woof, woof” noise will probably cause a lot of damage to his eardrums, which are more sensitive than normal. Therefore, personality is one of the typical characteristics of each dog breed and one of the purposes of breeding working dogs. Different breeds with different personalities can take on different duties. And such a stable personality is beyond the reach of mixed breed dogs. Many people mistakenly believe that all breeds are consolidated because of their appearance repeatedly bred from inbreeding hundreds of years ago, but they are not. Initially, the breed was primarily for working purposes, and only later did the development of appearance emerge. ② Shape stability was mentioned in the previous point about shape, this side will mainly talk about the shape of purebred dogs. The actual fact is that you can find a lot of people who are not able to get a good deal on this. First of all, we exclude the “Golden Hair” created by the bad dog dealers in China, not to mention the Golden Hair that has too many generations in the country and has an unclear pedigree. The only comparison of those with clear pedigree, ancestral generations can be found in the pure-blooded Golden Retriever. For example, the pedigree is extremely close to the introduction of foreign breeders of golden hair, or directly look at the old American breed racing golden hair, those are clear not to join the pedigree of other breeds of blood golden hair, is not a big difference in appearance? In addition to the insiders can immediately see the difference between each dog, laymen look at the estimate really can not be distinguished. This is the advantage of the stable appearance of purebred dogs. When parents choose a purebred puppy, they can basically predict what the puppy will look like as an adult. In the case of mixed breed dogs, the growth process has more surprises from the appearance, so that the owner has been curious, what will grow into later? ③ According to the need to choose such as intended to raise a watchman, certainly not to choose a Golden Retriever such as people familiar with, encounter thieves patronizing also help to move things breed; if you intend to raise with the children when woof nanny, certainly not to choose Tibetan mastiff such a security risk breed; if you intend to raise a variety of skills training, you must choose a high obedience breed. Purebred dogs themselves have been breed characteristics clear, suitable for different duties, according to the need to choose, it is easier to choose the right dog. The disadvantages of purebred dogs genetic disease problems, arguably the biggest disadvantage of purebred dogs. Various breeds have their own high probability of genetic diseases. Some breeds are prone to CHD, some are prone to exophthalmia, some are prone to inverted eyelashes, some have a high incidence of tumors, some are prone to spinal disease, and some can have the more dreaded spinal cord cavitation ……
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