First, reduce the density. There should be no more than 8 breeding hens per square meter. Generally about 5 or so, the density is very easy to cause chicken disease. Second, increase ventilation. The area of ​​the window is large and the convection effect is better. In large breeding houses, exhaust fans should be installed to eliminate bad gases in time. Third, reduce the temperature. On the one hand, avoid outdoor temperature entering the room. On the other hand, try to keep the water from flowing to the ground when providing drinking water, and prevent rainwater from pouring back into the room during rainy days. When the weather is getting windy, try to open the windows to ventilate the indoor vents and harmful gases to the outside. Fourth, cover curtain cooling. Cover the straw curtain to isolate the temperature, or coat the white paint. Fifth, supplement nutrition. Add 1 gram of vitamin C and 0.03% of sodium salicylate per kilogram of drinking water. Sixth, feed increase feed. Improve feed nutrient concentration. Add about 1% fat to the feed, and increase the vitamin nutrition. Seven, increase sodium bicarbonate. Add 0.1%-0.5% sodium bicarbonate to the feed to reduce egg storage and improve feed efficiency. 8. Increase the number of feedings. The number of feedings will be increased each morning and evening to meet the nutritional needs of the flock. Nine, do a good sand bath. Give the chicken a proper amount of dry sand and let it have a sand bath. X. Strengthen disinfection. Kill pathogens and protect the health of chickens.
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