Lvkedanji growth rate and egg production rate is required. Captivity 
 Peak of the chicken egg, dietary available phosphorus content of 0.45% - 0.5% (total phosphorus 0.65% - 0.75%), the old 
 Available phosphorus in chicken diets gradually reduced to 0.4% (total phosphorus 0.75%), chicken available phosphorus in the whole growing season diets containing 
 Remains at 0.5%. Supplement a variety of enzymes in the amount of zinc, can increase the chicken liver, egg production rate mentioned in the layers of dry feed 
 High in the feed to add the right amount of manganese, can significantly reduce the number of laying hens producing soft shell eggs. 
 The timely Duanhui. The time of the chicken beak three better period :6 - 9 weeks of age, 10 - 14 weeks of age, 18 - 20 weeks of age, 
 Combined with transfer group, the beak on the cage. Or repair before beak the chickens beak, which can drain will cut a long beak, the beak tip 
 Or deformation of the complement of cutting or trimming. 
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