Breeding chicken refers to large and medium-sized chicks aged 7 to 20 weeks. The flock rearing period is the stage to complete the bones, weight, fallopian tube and ovarian development. It requires higher energy to ensure the increase of body weight, so as to ensure the survival rate of the chicken and the high egg production rate in the future.
First, crude protein level requirements
At 7 to 12 weeks of age, the crude protein content in the diet is 15 to 17%. At the age of 14 to 17 weeks, the skeletal system is nearly fully developed, so the protein percentage can be reduced by 1% per week until the crude protein level is 13 to 14%.
Second, the level of metabolic energy requirements
Metabolism can easily deposit fat during the rearing period, affecting the performance of future egg production and the fertilization rate of the egg. Therefore, it is also important to control the level of metabolic energy in the feed.
Third, the constant mineral demand in order to improve the calcium storage capacity of hens, the growing hens should be fed diets with lower calcium content, only after laying eggs, then feed the high calcium diet, so that the hens There is a large amount of calcium deposits in the body to take full advantage of the high yield characteristics of good laying hens. However, it is also necessary to pay attention to the proper proportion of calcium, phosphorus, manganese, zinc and other minerals in the feed, because this is an essential nutrient element that ensures the normal growth and development of the broiler chicken. The ratio of calcium to phosphorus in developing chicks should be 1:1.5 or 2:2.1.
4. The demand of multivitamins is to promote the development of digestive organs such as the stomach and intestines of bred chickens, and to enhance their digestive function, ensure the health of chickens, and appropriate amounts of bran and green feeds should be added when gradually increasing the amount of bran feed and green feed. The amount of vitamins used to increase the feed intake of the chicks generally requires that the crude fiber content in the feed be up to 5%, the maximum dose of the bran feed can be up to 15 to 12%, and the green feed can be up to 20 to 30%. The amount of vitamins used ranges from 0.01 to 0.04%.
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