1, summer cooling measures

Insulation cooling. A low-cost asbestos tile is placed on the roof of the chicken house to prevent rain and have good heat insulation. Lid water around the walls of the house can effectively disinfect and reduce the temperature of the house.

Do a good job of greening. Plan to grow tall broad-leaved trees 2 to 3 meters away from the house, avoid direct sunlight in the houses, and plant cane climbing plants such as ivy and morning glory to absorb sunlight. The effect of shade and summer heat can also increase oxygen production, reduce dust, and improve the microclimate environment of the house.

Increase ventilation. Good ventilation is an important measure to ensure the environment inside the house. In the summer, under the premise of ensuring safety, all doors and windows will be opened, ventilating devices such as exhaust fans and ceiling fans will be activated, and facilities and obstacles that obstruct air circulation will be removed to maximize the flow of air in the houses to reduce the temperature. Vertical ventilation can also be used conditionally, that is, ventilation along the vertical axis of the house, cooling effect can reach 5 °C - 8 °C.

Hair cutting heat dissipation. Rich feathers on the chicken body, no sweat glands on the skin, strong thermal performance and poor heat dissipation, timely shearing of laying hens in summer, can increase egg production rate. It is usually done in the evening. The wings of the layer, the chest and abdomen, the back and the neck are cut off, and the long hair on the tail and wing tips is not cut, which is conducive to the heat dissipation of the layers and the elimination of mosquitoes. When the shearing action is both light and fast, it is advisable to cut the hair length so as not to damage the skin and the large capillaries.

Spray water to cool down. Can often be cold water to cool, when the temperature exceeds 32 °C, where conditions can be used rotary sprayer, spray cold water to the top of the house or wall or cold temperature spray to the chicken body, generally reduce the temperature 5 °C -10 °C .

2, adjust the diet

In order to ensure adequate intake of nutrients for high-calorie chickens, keepers must adjust the diet structure in a timely manner.

Nutrition formula. During the hot season, the feed intake of chickens decreased, and insufficient nutrient intake directly hinders egg production. In order to better meet the nutritional needs of chickens during the various stages of egg production, feeds with higher protein content should be fed in the morning and at night, and green and juicy feeds should be fed at noon to diversify feed varieties.

Intake of calcium and phosphorus. Calcium is the main component of the formation of egg shells, so try to increase dietary calcium and phosphorus intake, such as adding more shells and eggshell powder in the feed. It should be noted that these two sources of calcium are added Must be disinfected before, only increasing calcium in feed is not enough, but also add sodium bicarbonate. Experience has shown that when the temperature reaches 27°C, feeding 0.3-0.5g of sodium bicarbonate per 100 chickens in the diet can significantly increase the egg production rate.

Increase vitamins. Heat stress in laying hens in summer is particularly prone to vitamin deficiency, so the vitamin content in the diet should be increased. Generally in the hot summer, the amount of multivitamins can be increased by 2 to 3 times, especially vitamin C, which can significantly relieve heat stress. According to reports, adding 0.02% of vitamin C to the diet can increase the egg production rate by 9%, or add 0.5% sodium bicarbonate to the diet, which can significantly reduce heat stress, increase egg production and shell thickness. , Reduce mortality and increase feed conversion.

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