Summer temperatures are high, and the key to breeding and management of laying hens is to prevent heatstroke and cool down, promote appetite and ensure adequate nutrient intake. When the temperature is higher than 25 °C, the chicken drink more water, feed intake decreased, the egg production rate began to decline, eggshell thinning, small eggs and broken eggs increased.
The following measures can be taken: Reduce the radiant heat and heat of reflection in the house, for example, using roofing materials made of heat-insulating materials, painting the sun side of the house, painting the roof white, and installing a hangar; increase ventilation and adopt vertical ventilation When the temperature exceeds 30°C, adopt wet curtain and spray cooling method to install wet curtain in the vent of the chicken house. The air cooled by the wet curtain flows through the chicken house in the longitudinal direction and removes the metabolic waste heat generated by the chickens in the house. Temperature 2 ~ 4 °C, the effect is good.
Adjust the dietary concentration according to the feed intake of the chicken, reduce the feed energy level, increase the protein level, and generally increase the crude protein level by 1% to 2%. Considering the influence of the ambient temperature on the feed intake and eggshell quality, the feed should be increased in summer. The content of medium calcium, available calcium shell powder, feeding at dusk, the general amount of feed is 1% to 1.5% of the diet.
Adequate cool drinking water should be ensured, and sinks or drinking fountains should be cleaned daily.
Timely excrement, because the chicken manure water is generally more than 80%, so that increased humidity within the house, affecting heat.
You can add 0.02% vitamin C or other heat-stress-resistant additives such as electrolytes to feed or drinking water.
Feeding time is best in the morning and evening.
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