Cooling reduces the temperature. Chickens do not have sweat glands. The heat generated in the body can only be lost by breathing, and its ability to adapt to high temperatures is poor. When the temperature exceeds 25°C, a curtain can be installed at the air inlet to allow the hot air to cool before entering the house. This method can reduce the temperature by 5°C and maintain the cooling time by 6~8 hours. When the temperature exceeds 30°C, you can use high and low mist to rotate the nozzle sprayer to directly spray cool water to the room items or chickens every 2~3 hours. Spraying once can reduce the temperature of the house by 8°C.
Lowering energy means reducing feed energy value. Tests have shown that at 25°C or higher, the feed intake of broilers decreases by 1.6% for every 1°C increase in the house, and energy is appropriately reduced to increase protein levels by 10% to 15%. Plant protein can be used instead of animal protein feed. Reduce the greasy taste of chickens and increase the multidimensional factor in the diet by 2 times. At the same time, granular feeds can be exchanged to increase palatability, increase feed intake, and increase total nutrient intake of broilers. During the hot season, it is best to feed at night. From 10 pm to 6 am the next morning is the coolest time for broilers to feed. Method: Increase the brightness of the house properly, increase the excitability of the broiler, feed 4 to 5 times at night, and keep the chicken's strong appetite by vibrating the barrel and driving the flock. In addition, dry and unpolluted river sand can be used as a litter in summer to facilitate heat dissipation in broiler sand baths and chicken bodies, and to enable broilers to consume sand grains, which is beneficial to food digestion.
Drop density reduces stocking density. Suitable density for broiler chickens in summer is 25~30/sq.m. on 7~14 days, and 5~25/sq.m. on 21~28 days. It is advisable to use 300 animals per group, separated by fences.
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