Preparation of chicks prior to entering the house is an important technical measure for brooding. It relates to the survival rate, health status, and growth rate of the chick during the brooding period. The task of preparation is to create a broiler environment that is clean, free from disease, warm and comfortable, and convenient for drinking. It includes the following tasks: 1. Cleaning In the cycle of production, after each batch of broilers is released, the broiler house shall be thoroughly cleaned, and the excrement, bedding and leftovers shall be cleaned up. Some grass mats that are less contaminated should be exposed to sunlight and sun if they need to be reused. The dust on floors, walls, roofs, appliances, etc. must be cleaned. Second, washing and rinsing is an effective measure to reduce pathogenic microorganisms in large quantities. After cleaning in a poultry house, a thorough flushing should be performed. It not only flushes the ground, but also flushes walls, sheds, fences, feeders, and drinking fountains. If there is a fecal matter stuck to the ground, it should be eradicated when combined with flushing. It is best to use a high-pressure faucet to wash, if no condition should be washed 1 or 2 times. III. Disinfection After cleaning and flushing, the number of pathogenic microorganisms in the house is greatly reduced, but it cannot be completely eliminated. This must be disinfected. Disinfection must be done after washing the floor with water and drying the walls. A 2% aqueous solution of caustic soda, or a 3% aqueous solution of lewis, or an imported agrochemical 0.3% can be used for disinfection of the environment, houses and utensils. If the house has good confined conditions, it is advisable to have a fumigation after the various utensils are ready. Use 25 ml of formalin and 15 g of potassium permanganate per cubic meter of space. When fumigation, the doors and windows should be closed, and 12 hours after fumigation, the doors and windows can be opened and ventilated. Fumigation should be carried out a few days before entering the chicken to avoid fumigating odors on the chicks. Fifth, bedding No matter if it is a ground brood or a brooding on a shed, in order to keep warm, it is usually necessary to lay grass. The quality requirements for grass bedding are not moldy, non-polluting and soft, dry, absorbent, and appropriate in length and length. The types include sawdust, small shavings, corn stalks, rice straw, wheat straw, etc., which can be mixed and used. The litter should be exposed to sunlight before use. Moldy weeds should be picked. The laying thickness should be about 5 cm, but it should be flat and at least 10 cm away from the heat source. 5. When the fence is laying grass, use a brooding fence to divide the brooding room into small circles with the heat source in the center of the circle so as to fix the chicken near the heat source. Chickens less than 2 weeks old are warmed, fed, drinking, and rested in a small circle. The height is about 40 cm. The size of the circle should be determined by the size of the flock and the insulation equipment. If the insulation umbrella is used to keep warm, the fence is 80 to 100 cm away from the edge of the umbrella; if a coal stove is used to increase heating at the entire room temperature, the fence can be circled smaller, with about 200 broilers per lap. Fences are generally removable when chicks are not insulated with heat. Sixth, preheating 48 hours before hatching, insulation equipment should be installed, inspected and repaired, and preheating and warming should be started 24 hours before hatching so that the temperature range of chicks can reach 33°C, or under the umbrella The temperature reached 35 °C. Preheating and warming in advance can, on the one hand, bake indoor humid air, reduce the heat absorption of the walls and floors of the chicken house, and keep the room temperature constant; on the other hand, it can also check in advance whether the temperature can meet the requirements, so that measures can be taken as soon as possible to prevent After taking the baby, the room temperature is too low and it is difficult to handle. Prepare a feed tray and a drinker before entering the chicken. The dwarf pans were used on the 1st to 2nd day of the chicks for the chicks to enter the feed. Both trays and drinkers should be placed in the enclosure and should be placed evenly. 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What to do before the broiler goes in