With the advent of summer, a sudden increase in temperature often leads to decreased feed intake, decreased egg production, and poor egg quality. What has happened here? In fact, this is a "heat stress" response in laying hens.
First, the pathogenesis chicken without sweat glands, particularly sensitive to high temperatures, "stress" showed mouth breathing, drooping wings, purple crown and even death from collapse. The incidence of chickens is mainly 160 ~ 250 days old chickens, with the increase of age, the incidence decreased. Due to the strong stimulation of heat stress, the immune function is directly impaired, the ability to produce antibodies is inhibited, and the resistance to disease is reduced. In heat stress, the suppression of genital activity is particularly pronounced, resulting in a significant decrease in egg production.
Second, measures to relieve heat stress
1. When the temperature is high, there is a marked increase in the water consumption of laying hens and sufficient drinking water is provided to increase the number of drinking water.
2, spray water cooling. When the temperature of the chicken house exceeds 30°C, appropriate water spray can be used to reduce the temperature of the house from 2°C to 4°C. Spray water every day from 11am to 12am once and then every 2 hours.
3, add drugs for prevention. Add water-soluble compound multidimensional or 0.02% vitamin C in drinking water; supplement vitamin C in diet, that is, add 500 grams of vitamin C per ton of feed; add 0.5% sodium bicarbonate to feed, can significantly increase the egg production rate, Increase the thickness of the egg shell to reduce the diarrhea in laying hens, but not for long-term use, so as not to damage the acid-base balance of the body; 0.05% aspirin may also be added to the feed.
Note: Sodium bicarbonate can not be used together with vitamin C, aspirin, so as not to affect the efficacy.
First, the pathogenesis chicken without sweat glands, particularly sensitive to high temperatures, "stress" showed mouth breathing, drooping wings, purple crown and even death from collapse. The incidence of chickens is mainly 160 ~ 250 days old chickens, with the increase of age, the incidence decreased. Due to the strong stimulation of heat stress, the immune function is directly impaired, the ability to produce antibodies is inhibited, and the resistance to disease is reduced. In heat stress, the suppression of genital activity is particularly pronounced, resulting in a significant decrease in egg production.
Second, measures to relieve heat stress
1. When the temperature is high, there is a marked increase in the water consumption of laying hens and sufficient drinking water is provided to increase the number of drinking water.
2, spray water cooling. When the temperature of the chicken house exceeds 30°C, appropriate water spray can be used to reduce the temperature of the house from 2°C to 4°C. Spray water every day from 11am to 12am once and then every 2 hours.
3, add drugs for prevention. Add water-soluble compound multidimensional or 0.02% vitamin C in drinking water; supplement vitamin C in diet, that is, add 500 grams of vitamin C per ton of feed; add 0.5% sodium bicarbonate to feed, can significantly increase the egg production rate, Increase the thickness of the egg shell to reduce the diarrhea in laying hens, but not for long-term use, so as not to damage the acid-base balance of the body; 0.05% aspirin may also be added to the feed.
Note: Sodium bicarbonate can not be used together with vitamin C, aspirin, so as not to affect the efficacy.
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