The "five sees" and "four touches" methods can be used to identify high and low laying ducks. "five see" look at the head. The head of the duck is slightly smaller, the mouth is long and narrow, eyes are large, and there is a prominent god. It looks bright and clever. It seems that the “snake head†is a high-produced duck; the head of the duck is small, the eyes are small, and the neck is short and the neck is short. Duck. Second look back. Ducks with wide backs are high-yielding ducks; ducks with narrower backs are low-yielding ducks. Three look at the body. Body length and width are high-producing ducks; conversely, low-producing ducks. Four to see feathers. The duck feathers are tight and flexible, but they are low-producing ducks. Five feet. The neck of a portable duck, if it stretches downwards but does not move, the high-yielding ducks are spread out in each toe; the legs are curled up, and the low-yielding ducks are close to each other. "Four touch" touched the phalanges. The high spawning ducks have a wide phalanx spacing during the laying period and can accommodate 3 to 4 fingers, while the low spawning ducks can only accommodate 2 to 2.5 fingers. Second touch the abdomen. The abdomen is large and soft, full and sagging buttocks, and the body structure is well-proportioned. The quail-like hens are high-producing ducks. The low-producing hens are small, relatively hard, and their hips are not full. Three touch the skin. The skin is soft and elastic, and there are less subcutaneous fats for high-producing laying ducks; low-producing laying ducks have rough skin, no elasticity, and more subcutaneous fat. Four touch the anus. High-producing ducks have a large cloacal cavity during the egg production period, and the semi-opening state of the low-producing laying duck cloac is tight and wrinkles, and is relatively dry.
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