In large-scale chickens, the chickens are scientifically refueled according to different seasons and different ages. The chickens not only grow fast, but also increase the nutrient reserves in the hens, thus ensuring the balance of hen production and continuous production.
Refueling the chicken should first be carried out according to the standards of the breed. Generally, 19 to 20 weeks old chickens are fed with egg pre-feeds, also called transition materials. The calcium and protein components in the feed should be increased compared with the feed of young chickens. The ratio of calcium is generally 1%, and the crude protein is 16.5. %, when refueling, the refueling process is gradually completed between about half a month. For refueling of laying hens, it is best to change to laying chickens when the egg production rate reaches 2%~5%. The calcium content of laying hens should be 3.4%~3.5%, and the crude protein should reach 18%. When refueling, if it is a young chicken cultivated by natural light after summer, it tends to start late, and it can be refueled at 18 weeks of age; if it is a reserve chicken or early-maturing breed chicken cultivated by natural light after winter, it often starts production. Earlier, it can be refueled at 17 weeks of age.
Refueling young chickens, can not be directly replaced with laying hens, nor suddenly refueling. If you are eager to complete the refueling at one time, the composition of calcium and crude protein will suddenly increase, especially the protein will increase, the amount of drinking water will increase, and the body of the chicken will often cause diarrhea due to poor digestion and absorption. Therefore, the young chickens are refueled, the feed contains calcium at about 0.8%, and the crude protein at around 15.5%.
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