In addition to the influence of breeds, feed, management techniques, and age, the difference in individual duck yield is also significant. Therefore, identification can be made based on the shape and appearance of laying ducks, and low-yielding ducks can be eliminated in time. Take a look at the first five. The head of the duck is slightly smaller, its mouth is long and narrow, and its eyes are large, convex, and full of spirits. It appears bright and clever, resembling a high-yielding duck with a “snake headâ€, and a duck with large head, small eyes, and a short neck with low neck. 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-yield ducks; otherwise, low-yield ducks. Four to see feathers. The duck feathers are close and meticulous, and the elastic ones are high-yielding ducks; on the contrary, they are low-yielding ducks. Five feet. If the duck neck is stretched downwards but does not move, the high-yielding ducks will be spread out in each toe. When the legs are lifted, the ducks will be low-yielding ducks. Touch the phalanges four times. The high-yield ducks in the laying period have wide toe-bone spacing and can accommodate 3 to 4 fingers, while low-yielding 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 shape and structure of the body are well-proportioned. The ducks are low-yield, small, hard, and full of buttocks. Three touch the skin. The skin is soft and elastic, and there are less subcutaneous fats for high-yield ducks; low-yielding ducks have rough skin, no elasticity, and more subcutaneous fat. Four touch the anus. High-yielding ducks have a large cloacal cavity during the egg production period, and they are semi-open. Low-yielding duck cloacas are tight and shrink, wrinkles, and dry.
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