Brahman chicken generally refers to Brahman chicken. The largest chicken in the world is Brahman chicken, also called Brahman chicken. It is said that an American crossed Huang with Bengal chicken and bred a huge new breed called Brahma chicken, which is also the largest chicken in the world. The head of this Brahma chicken looks not much different from that of an ordinary chicken, but it gets bigger as you look down, with a thick neck, huge wings and very rich feathers. When you walk, you are covered with feathers, but it is also a good thing to have more feathers. These cultured Brahma chicken feathers can be used to make badminton or shuttlecock, just like sheep, if it is hairy, it will be shaved off. This kind of chicken is tender and has high protein content, so it is a kind of broiler with high nutritional value. The eggs laid by this kind of chicken are also very large, and the nutritional value is much higher than that of ordinary eggs, so this kind of chicken is very popular abroad.

Beijing Oil Chicken is a specialty of Fangshan District, Huairou District and other nine districts in Beijing, and it is a geographical symbol of national agricultural products. Beijing has a relatively flat ground, a mild climate in front of the mountain, abundant surface water and fertile soil, which provides a breeding environment for Beijing oil chickens. Beijing Fatty Chicken is a kind of chicken with both meat and eggs. It is of medium size and has the characteristics of yellow feathers, yellow beak and yellow shin. Its meat quality is excellent, with intramuscular fat in chest muscle and fatty acid in eggs. Beijing oil chicken has a peculiar appearance, tender meat and rich egg fragrance, which are the appearance and sensory characteristics of local yellow-feather chicken breeds in China. The appearance of this kind of chicken has the following characteristics: medium size, with "three yellows" characteristics of yellow feather, yellow beak and yellow shin, and crown hair, whiskers and hairy legs (shin hair and toe hair). It also features five toes. 16 weeks old, the tibia length of Beijing oil chicken is more than 8.5cm (cock) and more than 7.0cm (hen). The intramuscular fat (dry matter basis) of Beijing Fatty Chicken is 3.30 ~ 5.09g/100g, the fat content (edible part of egg) is 9.21~14.00g/100g, and the fatty acid content (edible part of egg) is 0