First, the replacement of the transition material to the 20-week-old hen for feed before laying eggs, also known as the transition material, the material of calcium content of 1%, crude protein was 16.5%. To gradually replace, in case of causing diarrhea, when the egg production rate reaches 2% to 6%, the calcium content of the feed should be 3.4% to 3.5%, with crude protein should reach 18%.
Second, to control the condition of the chickens, while changing the transitional materials, it is necessary to grasp the evenness of the development of the chicken groups. It is best to keep the large, medium, and small reserve broilers separately, so that the effect can be expressed after 3 weeks. Do not rush. . The weight of light-weight chickens should not exceed the medium and large chickens, so as to avoid affecting sexual maturity due to fat deposition.
Third, strictly control the temperature of the chicken house The optimum temperature for egg production is 18°C. The temperature is too high or too low. The nutrients needed to maintain the need increase. When the temperature is lower than 13 °C, it will affect the growth and production of laying hens, so the broiler house temperature is too low, and not feeding in time, the chicken will be delayed due to lack of energy production. In the fall of high temperatures, the feed intake of laying hens is reduced. If the proportion of protein in the diet is not increased in time, it will affect the development of the chicken's reproductive system and delay the opening date.
Fourth, adjust the relative humidity and ventilation The relative humidity of the chicken house is required to be 55% to 65%. After 4 weeks of age, the relative humidity can be reduced to about 50%. The humidity should not be too high. Otherwise, the chicks will lose appetite and become frail and sick, thus delaying sexual maturity and postponing opening. Production. If the ventilation is poor, harmful gases in the air will increase, the humidity will increase, and the oxygen content will decrease, which will cause the reserve hens to stunt and postpone the opening date.
5. Control and adjustment of light illumination Reserve hens generally enter the sexual maturity stage at 15 weeks of age. During this period, natural lighting should be gradually shortened. The shorter the illumination time, the longer the time for reaching sexual maturity. Therefore, supplemental lighting should be started after 15 weeks of age. To meet the needs of sexual maturity in chickens. The light should not be too strong to prevent the occurrence of embarrassment such as chicken feathers and licking. The initial illumination time of laying hens is 13-17 hours.
6. Drinking water for cleanliness The hens are in great need of drinking water. Generally, a hen needs about 100 grams of water per day. Therefore, laying hens must not be short of water every day. It is best to use a flowing water tank for water supply, and 2 to 3 times of dilute salt water can also be supplied each week to improve the hen's constitution and increase its intake. You can also feed carrots or greens to increase protein levels.
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At present, to promote energy saving and emission reduction, the development of low-carbon economy has become the main theme of the development of the world economy, especially for China which is a relative shortage of resources per capita, serious ecological damage power development, in the huge pressure of energy and environment, promote energy-saving emission reduction, it is imperative to develop low carbon economy. In the Copenhagen world climate conference held in December 2009, the Chinese government commitment to the 2020 unit of GDP carbon emissions than in 2005 decreased by 40% ~ 45%. In the future, all walks of life will move towards low energy consumption, low pollution and low emission direction, the development of flexible packaging industry can not be contrarian. Soft packaging industry as one of the more serious energy consumption and pollution, in the face of increasingly prominent energy and environmental problems, should assume more social responsibility, to contribute to energy saving and emission reduction.
In China to use a large number of organic solvents, emissions of a large number of high concentration of organic waste gas is an important cause of environmental pollution caused by the soft packaging industry. At the same time, the evaporation of organic solvent in the process of use also caused the problem of indoor pollution and safety. With the increase of people's awareness of environmental protection and national environmental protection, organic emission problem of the soft packaging industry has aroused social attention, soft packaging enterprises also obviously feel the increasing pressure of environmental protection, high discharge mode used by now has been difficult to project eia. Moreover, the future of national legislation in the field of environmental protection will be more stringent, flexible packaging enterprises must be a pressing matter of the moment to take effective measures to reduce emissions and energy consumption of organic waste gas, in accordance with the national energy-saving emission reduction targets
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