Duck is a kind of bird belonging to the genus Duckling. Ducks are full of feathers, with a big round head, no crown, drooping meat and ear leaves; The beak is long and flat, and the edges of upper and lower palates are serrated and keratinized; Long neck and free movement; The body is wide and long, boat-shaped, with bulging forequarters, plump feathers, small wings and long aileron feathers; Short legs, webbed toes, toes and webbed parts exposed, which is beneficial to swimming; Drakes have hooked feathers, short tails and developed caudate sebaceous glands. Moreover, the penis is developed, extended and spiral.

Ducks are distributed in most parts of China and are good at foraging, frolicking and courtship. Ducks are docile, timid and easily frightened. As long as there are suitable feeding conditions, regardless of the age of ducks, mixed culture can be harmonious and the fighting phenomenon is not obvious. The adaptive age of drakes varies according to different breeds, generally 5-8 months old. During this period, the male duck is full of energy and the female duck is fertile, and the incubation period is 26-28 days. ?

Duck meat has the functions of tonifying deficiency, clearing away heat, harmonizing viscera, and making body fluid circulation smooth. Can be used for treating infantile convulsion, erysipelas, dysentery due to heat, and wound healing. China is the first country in the world to domesticate wild ducks into ducks, and many varieties have been cultivated under domestic conditions. For example, an excellent breed was cultivated in Beijing in the Ming Dynasty, named "Beijing Duck".

Sex identification method of ducks

1, shape recognition method: generally, the head is large, the nostril is narrow, and it is straight along the concha, and the body is round. The tail is pointed by the male duck, but the head is smaller, the nostrils are roughly round and the body is flat, and the tail is scattered by the female duck. ?

2, the identification method of the sound tube: the sound tube is also called the lower throat, located at the top of the tracheal bifurcation. The male duck here has an enlarged spherical tympanum with a diameter of 3 ~ 4 mm, which can be felt from the chest in vitro, while the female duck does not have such a sound tube.

3. Anal touch identification method: hold the newborn duckling with the left hand, so that its back is facing the sky and its abdomen is facing down, gently clamp the neck with the thumb and forefinger, and gently lift the lower part of the anus with the thumb and forefinger of the right hand, first press forward and then press backward. If you feel something the size of hemp or rapeseed protruding, it is a male duck, otherwise it is a female duck.