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Be wary of egg laying fatigue in summer!

2020-07-08

In the breeding production, the laying rate of laying hens directly determines the economic benefits of our farmers. Most of the egg-producing fatigue diseases are caused by chickens and high-yielding laying hens that are near the beginning of production, and are most likely to occur in summer, so For our chicken farmers, it is very important to prevent egg fatigue in summer.

Egg Fatigue,Also known as osteoporosis or paralysis of cage-laying laying hens, it is one of the most serious diseases of cage-breeding chickens. It is also the most prominent metabolic disease in the production process of laying hens. It is mainly caused by production. Laying hens are paralyzed, dying and egg production is declining.

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1. Popular features

(1) It mainly occurs in laying hens, with the first laying hens and peak laying hens occurring more frequently;

(2) Chicken flocks generally die at night. Sometimes the chicken flocks are very good during the day, but they are often picked out in the morning when they are fed. Dead chickens often have prominent cloacas and more fat chickens;

(3)The paralyzed chickens continue to appear in the flock, if found in time, the paralyzed chickens can be picked out to recover;

(4)It often occurs when the weather suddenly becomes hot.

2. Clinical symptoms

Sick and dead chickens have a larger appearance, fuller muscles, and protruding cloacas. There is no change in eggshell strength, and the egg breakage rate is not high. Feed intake of large groups decreased slightly, drinking water increased, individual chickens breathed open, flesh twitched, but no obvious wheezing.

The stool is a little thin, with a small amount of yellowish white thin stool. Feathers are fluffy, the chicken body becomes hot when touched by hand, the cock comb and chicken feet are hot; the cock comb is purple, and the skin is red.

It is more difficult to stand before laying eggs, the legs are soft, the joints are not flexible, and the body is often supported by the hock joint and the tail. Some chickens lie on the side and are paralyzed.

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3. Cause

(1)Calcium deficiency and poor physical development caused by various reasons are the direct causes of the disease. When egg production rises rapidly or the peak of egg production, chickens need large amounts of calcium and phosphorus, especially in summer when the temperature is high, which will reduce the feed intake of chickens, resulting in insufficient intake of calcium, phosphorus and vitamins.

(2)In summer, chickens drink a lot of water, which accelerates the movement of intestinal contents and causes a large loss of acidic substances, causing metabolic alkalosis. Due to the accelerated respiration rate in summer and the loss of a large amount of CO2, the PH value in the body rises, which leads to respiratory alkalosis.

(3)The disease is prone to occur when the chicken house has poor ventilation and there is no cooling measures. In hot weather, many chicken farmers turn on the fans to cool down during the day and night when they are filled with light, and often turn off the fans after turning off the lights. After the lights are stopped at night, the chickens can not drink normally and are more susceptible to high temperatures.

(4) The stone powder in the chicken feed is too fine, and the stone powder is crushed too fine, so that the absorption is fast and the excretion is fast, and the eggshell formation is mainly at night, so when the eggshell is formed, a large amount of calcium has been excreted and caused calcium deficiency. Bone calcium is used to cause fatigue.

(5) The feeding method is unreasonable. In the high temperature environment in summer, the feeding is too frequent, too many times, and the feeding amount is too large. It will increase the burden of the heart, liver and kidney of the chicken, which will cause the disorder of the chicken's metabolic function and induce the disease.

4. Preventive measures

(1)Before laying, laying hens should increase the nutritional level of the diet and increase the amount of calcium and phosphorus in an appropriate amount. Normally, blood calcium should be monitored. When a soft-shell egg is found, blood calcium should be tested.

(2)Properly reduce the feeding density, improve the ventilation conditions of the chicken house, relieve the heat stress, and avoid high temperature and hypoxia.

(3)Take the sick chicken out of the cage and raise it to let it move freely.

(4)Change the feeding method of chickens, increase the feeding amount and frequency every morning and evening, avoid feeding during the hottest days, to reduce the heart burden of the body and avoid death caused by heart failure.

(5)Improve the health care prevention program. In the hot summer, the chickens are under high heat stress, improve the chicken's overall immunity, and use trace elements to participate in the body's self-regulation, which can greatly enhance the chicken's anti-stress ability and metabolic balance ability. , Thereby reducing the incidence of this disease.

If there is a problem of egg production fatigue in your chicken farm, you can use the above methods to prevent and treat it. We hope that our sharing will bring you some help.

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