However, for this hyperpigmented bird, almost every cell in its body expresses EDN3. In fact, melanoblasts are produced almost ten times as much, making the bones and insides look like they’re soaked in tar.
“It’s a migration error,” Andersson said. ‘Yes [un corps] expresses too much endothelium 3, and in the wrong place the pigment cells migrate to the wrong part [de l’organisme]. »
Fortunately, this mutation does not appear to affect the health of these chickens.
On the contrary: breeders and connoisseurs tend to appreciate this dark-colored species. They felt that the unusual color of the flesh and bones gave them a unique and rich taste.
BENEFITS BENEFITS
Although scientists now understand what makes these chickens so special, the history of this species remains a mystery.
Many believe that Marco Polo wrote the first reference to this black-legged chicken. In 1298, when he traveled to Asia, explorers described a breed of chicken “that has the fur of a cat, is black in color and lays the finest eggs.” No one could be sure, but it turned out to be a description of a sheen.
According to Leif Andersson, this mutation must have spread around the world thanks to breeders who appreciated the unique coloration of this bird. There is even an anecdote that a sailor brought back a black chicken from East Asia, which explains how the Swedish black chicken came to Europe.
“I think it’s pretty clear that people love diversity in pets,” Andersson said. He is also investigating the genetic origin responsible for the species’ plumage type and is currently studying crown formation in chickens.
Although this species has existed for several centuries, their individuals are still rare.
For example, of the four species, standard of perfection associated with syhen only by the American Poultry Association (APA). Therefore, this variety can participate in the competition.
According to John Monaco, president of APA, the process of achieving such a standard could take years.
‘Cemani have appeared recently and people have just started working with them. But syhenne is everywhere. The varieties are numerous and have even been declared champions of various competitions. “
For Mr Andersson, all black chicken breeds are champions because they are highly unlikely, especially genetically.
‘It’s more common to see damaged pigmentation – white depigmented spots – because it’s easier to disrupt genes than to turn them on as is the case here. “
The existence of the black rooster was by chance. However, its reproduction and reproduction worldwide is an option.
“This is really interesting,” Andersson concluded.
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