An owner in the United States kept a duck as a pet. The breed of this duck is Peking Crested Duck. It has a very outstanding hair style. Adds a bit of a distinctive vibe.

Because of its unique appearance, this duck has become a star since hatching. Not only does it often appear in newspapers and magazines, but it also receives advertising endorsements and visits nursing homes around the world as an emotional support animal.

Since this duck has Beijing in its name, it means that it has nothing to do with our country.

Beijing crested duck is actually a variant of the domestic duck we are most familiar with. Its unique hair style comes from a gene. The original crested duck may have been produced by natural genetic variation. result.

Genes that affect the hair style of the crested duck, if it is a combination of Aa, it will make the crested duck look like a crown, if it is a combination of AA, the crested duck will look like It is no different from ordinary ducks, and if it is a combination of aa, it is very dangerous. This genetic combination will produce ducks with deformed skull development, which may die before hatching.

In principle, it is best to use ordinary ducks and crested ducks for breeding crested ducks, so that it is easy to give birth to healthy ducks with crested heads.

The white ducks we eat are domesticated from two wild ducks, mallards and spot-billed ducks. On the basis of domestication, when ducks have some special appearances due to natural genetic variation, these special appearances will be retained after artificial selection and breeding.

The crested duck was a rare breed that could only be raised in imperial gardens during the Ming and Qing Dynasties in my country. Although it was actually a meat duck, it was only because of a genetic mutation that this unkempt hair became a species. Get precious.

The Emperor Kangxi of the Qing Dynasty especially liked crested ducks. Compared with the yellow-billed crested ducks, there is a black-billed species that is even more rare. White Crested Duck can be said to be the treasure of the town garden in the park.

We Chinese keep ducks as ornamental pets, and prefer to build a garden, in which a pond is designed and the ducks are kept in the pond. While Europeans and Americans keep ducks as pets, they like to dress them up like individuals and usually keep them in the house.

There are even diapers for poultry, which are convenient for owners who like to keep poultry as pets to keep indoor health, after all, birds are rectal...

But the crested duck is not a healthy breed, its head It's not just a bunch of messy hair on it. In fact, the skull of the crested duck cannot be closed, and some adipose tissue is exposed in the crevice of the skull, and these messy hairs grow on the adipose tissue.

This defect makes crested ducks, especially male crested ducks, very aggressive; in addition, it may cause epilepsy; some ducks have neurological problems, walking crooked; some crested ducks may die within a few years.

If you want to talk about the danger of the crested gene to ducks, it may be more serious than the folded ear gene of the folded cat.

So although this kind of duck looks cute, there are not many people who actually breed them. Claws hope that when you understand the interesting appearance of crested ducks, you should also understand these appearances The cruel truth behind it.