How to eliminate low-yielding chickens

First, according to the appearance of the characteristics of out of low-yield chicken performance in the appearance of the characteristics of two main points: First, the body is thick, thick head, the individual too fat. Second, the body is weak, the head is smaller, and the weight is lighter. The best time to eliminate these chickens is before the end of the breeding period.
Second, according to the quality characteristics of out of low-yield chicken cocks and meat gills rough, cool, lack of elasticity of the abdomen, cloacal can accommodate 1 to 1.5 fingers, and tight and dry. The best time to eliminate these chickens is at the end of the high yield period.
Third, according to the moult state to eliminate the normal moult is very regular, according to the order of the head → neck → chest → back → wing → tail, the wing main feathers 10, 17 to 18 deputy main feathers. Low-yielding chickens have early metamorphic feathers and early production discontinuation. They have long time for main feathers, and they only change one or two for one time. The elimination of these chickens should be carried out at the end of the laying period and when it is planned to keep high-yielding chickens.


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