1, the management of temperature
(1) Optimal temperature for adult flock: Between 18 and 23 degrees Celsius, high temperatures can easily cause heat stress.
(2) Look at chicken Shi Wen: Pay attention to the humidity of the chicken house. Use body temperature during the day and try to cool down so that the birds reach a comfortable temperature; use the indicated temperature at night.
2, high temperature and heat stress
Heat stress index = Relative humidity (RH%) + Fahrenheit (OF) 160. 160 Decreased intake, increased drinking water, and decreased production performance. 165 The flock began to die, causing serious damage to the lungs and cardiovascular system. 170 Masses of death. When the temperature exceeds 28 degrees Celsius, the gasping temperature begins to exceed 30 degrees Celsius, and the mouth is open to pant. Feed intake drops and drinking water increases. At temperatures above 32 degrees Celsius, flea, hypoxia, rapid increase in respiratory rate, snoring, and screaming occur, followed by severe death.
3, heat stress is the control measures:
Use cooling equipment: fan + wet curtain, first open the fan that can be used, use the wind speed to reach the appropriate body temperature to produce air cooling effect.
Secondly, use a wet curtain: the temperature exceeds 30 degrees Celsius, and the humidity is as low as 75%. Gradually use it, ranging from small to large; use both sides of the wall first, and finally use a gable wet curtain. In the last house, a windshield was installed to reduce the cross-sectional area of ​​the house and increase the wind speed.
4, no density
The density of flock in summer should be reduced, and 24 to 25 animals per group should be suitable. The flocks should maintain a reasonable density, and conditions should be grouped as soon as possible. The first grouping should be 8-13 days old, and the second grouping should be 21-22 days old. Grouping in the summer should be in the morning or late evening to reduce heat stress in the flock.
5, feeding management
Feed Feeding: Adjust the feeding time and feed it at a cooler time. In the morning or evening, avoid the high temperature period, and do not focus on feeding before 6 pm; pay attention to moldy mildew to prevent poisoning or intestinal diseases, daily net Slots and limited light once.
6, drinking water management
Provide fresh and clean drinking water to ensure adequate water. Safeguard intestinal health. Water quality standard: the standard of total bacteria: less than 100 per milliliter; 0, and no more than 50 per milliliter. The water line should be regularly cleaned.
During the rearing period, the height of the water line is adjusted every two days according to the age of the flock, so that the birds can only be lifted through the waterline. Every day, check whether the nipples of the water line are out of the water, and replace the nipples of the water outlet or the leaking water line in time to avoid the disease caused by lack of water in the flock.
7, chicken group management
When the outside temperature is higher than 26 degrees Celsius, the chickens are slaughtered. After the cage is loaded, it is necessary to draw water to cool down. When the water is fetched, it must be thoroughly smashed. During the slaughterhouse waiting for slaughter, it is necessary to draw water in a timely manner to reduce the temperature and prevent chicken fever. Radical death.
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