? Black-bone chickens generally have five toes, three in front and two in the back, a total of five. The four toes of common birds are actually the result of the loss of the fifth toe. Black-bone chicken did not recover the fifth toe because of the difference of heredity and growth environment, but grew an extra toe. Therefore, many black-bone chickens on the market are five-toed or even six-toed, which is normal.
Characteristics of black-bone chicken:
Black-bone chicken, also known as black-bone chicken, is very different from ordinary chicken in appearance. Not only their beaks, eyes and feet are black, but also their skin, muscles, bones and most internal organs are black.
Their blackness is mainly due to the deposition of melanin in the body, not any special structure. Black-bone chicken is rich in 18 amino acids, 18 protein, B vitamins and other trace elements, among which nicotinic acid, vitamin E, phosphorus, iron, potassium and sodium are high, but cholesterol and fat are low.
Because the growth cycle of black-bone chicken is longer than that of ordinary broilers, and the content of collagen and elastin in muscle is indeed higher than that of ordinary broilers, black-bone chicken has better toughness and tastes more "gluten".
At the same time, because the growth period of black-bone chicken is long and there are many flavor nucleotides accumulated, it will affect the taste of chicken, so the soup stewed by black-bone chicken will indeed be more delicious.