What is the reason for the decline in egg production of laying hens, and how to prevent and treat it

Management reasons (1) Temperature, humidity, ventilation and other management aspects are unreasonable, resulting in a decline in the egg production rate of laying hens. (2) Frightened by various external stresses such as man-made, resulting in a decrease in egg production rate. (3) Insufficient drinking water or feed intake will also cause a decrease in egg production performance.

4) The nutrient ratio is unreasonable, and feed mildew will also lead to a decrease in the egg production rate of laying hens. (5) The lighting is unreasonable. 2. Causes of disease (1) Some nutritional and metabolic diseases cause a decline in the egg production rate of laying hens.

2) If the laying hen suffers from influenza, Newcastle disease, branching, egg loss syndrome and other diseases, then the egg production rate will also decrease. (4) If the laying hen suffers from nematode, coccidiosis and other parasitic diseases, the egg production rate will decrease to a certain extent. (5) Impaired liver and kidney function of egg shells will also lead to a decrease in egg production rate.

Environmental factors cause a decrease in the egg production rate of laying hens.

Laying hens are very sensitive to changes in the environment during the laying period, such as light, temperature and air quality in the enclosure can affect the laying rate of laying hens. Therefore, it is important for us to provide a quiet and comfortable environment for egg production. In terms of light, we should provide continuous and stable light, if the light is flickering and dimming, and the light intensity is weak, it will affect the laying rate of laying hens.

In terms of temperature, we also need to control it well, because it is too hot in summer or too cold in winter, which is an important factor that affects the egg production rate. In addition, the ventilation of the enclosure is not good, and the strong smell of ammonia can easily induce respiratory diseases and reduce the egg production rate of laying hens.

First, the basis of egg production.

Pay attention to the construction of a shed is to produce more eggs, add Dalong eggs to the mixture, improve the quality of eggshells, increase the egg production rate, prolong the peak of egg production, reduce the dead Tao rate, reduce the feed ratio, provide convenience for our farmers, can provide immunity, more egg production and high income.

Second, heat preservation and heatstroke prevention should be good.

Build a chicken coop to take into account the insulation of the chicken coop and heat prevention two points, if the temperature in winter is lower than 5 degrees, the feed intake of the chicken will increase, resulting in a decrease in feed efficiency, to the summer temperature will increase dramatically, more than the optimal growth temperature of the chicken will have a great impact on its growth, the growth temperature is 10-23 degrees, the overall temperature of the broiler house is 21-26 degrees, in the construction to strengthen the thickness of the north wall bricks, in the roof to install a good roof.

3. Maintain good ventilation.

The ventilation of the chicken coop should be good, the windows on both sides should ensure the convection of the air, and the position of the windows should be cut, the ventilation can be ventilated by natural wind or the use of machines, and there should be a defecation opening.

Fourth, moisture-proof. Keep the chicken house a little drier, if it is too humid, it will cause the chickens to reduce their resistance, and the relative humidity of the general chicken house is below 65%.

The main effects are diseases, liver damage, intestinal imbalance, feed nutrition, feeding management and other reasons, the main drugs of disease prevention and vaccination, do a good job of disinfection, liver function damage can be used to "retrieve a lot of eggs" effect is good, in addition to do a good job in feeding management. Can it solve your problem?One time.

The original cause of the sudden drop in egg production of laying hens

1. Disease ** element:

1. Viral diseases: Viral diseases that make the egg production rate drop suddenly include Newcastle disease, infectious bronchitis, egg production decline syndrome, infectious laryngotracheitis, infectious encephalitis, lymphoid leukemia, chicken pox, etc.

2. Bacterial diseases: septicaemia mycoplasmosis, infectious rhinitis, avian cholera, colibacillosis, etc.

3. Parasitic disease: lecorona caused by the protozoa carinia biecdo.

4. Poisoning: poisoning caused by mycotoxins.

2. Nutritional factors:

1. Sudden change of feed varieties or ingredients, resulting in the chicken's discomfort.

2. The quality of feed changes, or mildew, or lack of nutrients.

3. The salt content of fishmeal is too high.

3. Environmental factors:

1. Suddenly stop the light, or suddenly shorten the light time.

2. Poor ventilation and high concentration of toxic and harmful gases in the chicken house.

3. Sudden increase or drop in temperature.

Fourth, management factors:

1. Sudden change of breeding personnel or sudden change of breeding management procedures.

2. Abnormal noise, color or disturbance of chickens caused by beasts entering the chicken coop.

3. The sense of responsibility of the breeders is not strong, or the amount of feeding is reduced, or the drinking water is insufficient.

5. Drug factors:

1. Drugs that inhibit the decline in production are applied, such as dysentery, quinethanol, Wumycolin, dysentery, beilimycin, chlortetracycline, chloramphenicol, dexamethasone, chlorproguanidine, coccidia, etc.

2. Emergency vaccination: When a certain infectious disease occurs in chickens, some vaccination measures may be taken, which will cause a sharp decline in egg production for a period, some can rise back to the original egg production rate, and some can not return to the original egg production rate, and even cause a permanent egg production decline. Vaccines that affect the decline in egg production include Newcastle disease, avian cholera, infectious bronchitis, infectious laryngotracheitis and other vaccines.

Measures: add premix in accordance with the standard, strengthen feeding management, improve feed nutrient concentration, especially the metabolic energy level (Hemei enzyme mixture replaces oil), multi-dimensional drinking water, microecological preparations (Yijing Liwei) mixture, adjust the balance of intestinal flora, improve feed conversion rate, Chinese medicine egg Gaole to promote follicle development, if caused by disease, should be treated in time**.

The reason is that when the weather gets colder, the hen's desire to lay eggs will decrease, so just keep warm.

Because of old age. Some chickens are older and can't lay eggs.

There are a number of reasons for a sudden drop in egg production.

First, feed factors.

Laying hens have high requirements for feed nutrition. Problems with the feed often lead to a sudden drop in egg production.

1.Feed quality is poor. Feed mildew or contamination leads to a decrease in feed palatability, a decrease in feed intake of chickens, and a sudden drop in egg production rate due to gastrointestinal diseases.

2.Improper ratio of calcium and phosphorus. The ratio of calcium and phosphorus is out of balance, which affects the formation of eggshells and eggs.

3.Nutritional deficiencies. Insufficient content of vitamins or trace elements is also an important factor, such as vitamin D3, vitamin E, deficiency of trace elements SE and MN.

4.Feed mutations. Sudden change of feed, resulting in the chicken's digestive function can not adapt to the change for a while and indigestion occurs.

Second, environmental factors.

Laying hens are very sensitive to changes in the environment, with changes in light, temperature and ventilation being the most obvious.

1.Lack of light and filial piety. If the chicken coop suddenly stops light, the light time is shortened, and the light intensity is reduced, etc., the egg production can suddenly decline, and some rural areas often have power outages, and the skin width lacks the proper lighting equipment, and the impact is more serious.

2.Sudden changes in temperature. Sudden increases or decreases in temperature, such as continuous hot weather in summer, the formation of a high temperature environment in the house, and a sudden cold snap in winter, will cause a general decline in feed intake and egg production.

3.Poor ventilation. The air in the house is polluted and the smell of ammonia is too strong, which can induce respiratory diseases and cause a sudden drop in egg production.

3. Management factors.

Poor management is also an important factor in the sudden decline in egg production in the flock, mainly in the following ways:

1.Feeding is irregular and not quantitative. For example, one more meal of feed, one less meal, drinking water can not be full of demand, and random rational operating procedures can lead to a sudden drop in egg production.

2.The device is damaged. For example, the water supply pipeline is blocked, the maintenance is not timely and the water supply is blocked, and the ventilation equipment such as electric fans is faulty and not repaired in time.

Fourth, the disease ** element.

Large liver and spleen disease: natural infection is mainly seen in chickens over 18 weeks old, especially in 30-72 weeks old laying hens are the most susceptible, 40-50 weeks old laying hens have the highest incidence, mortality increased by about 1%. Infected chickens have poor breeding, large individual differences, delayed laying hens, no peak egg production or laying hen egg production rate decreased by 20%-40%, egg quality declined, eggshells faded and thinned, and the volume became smaller.

Dalong Daganning can be used to treat the enlargement of the spleen and glandular stomach caused by the large liver and spleen of broilers, and the egg production of broilers can be reduced, and the egg production rate of broiler hens can be improved.

The main factors caused by the sudden non-laying of eggs by domestic chickens are not given to chickens to drink water, or heat stroke in the hot season, or hens hugging the nest, if the chickens are sick or lack of food, or the light is insufficient or the temperature is reduced, the temperature rises, and the chicken egg production is not suddenly stopped, but gradually decreased. It turns out that it is not so easy to breed a good local chicken, especially for novice breeders, many problems are encountered for the first time, and they don't know how to solve the problems.

There is also a situation where you are suddenly frightened by something, and then your physical disorder suddenly stops laying eggs! Is there anything sick about? The chicken is uncomfortable and can't lay eggs?

Haha, please ignore the last one! If large-scale farmed chickens don't lay eggs, ask the animal husbandry veterinarian! Now it is winter, the sunshine in winter is shorter than the sunshine time in summer, and the weather is not very good this winter, it is often a rainy day, the light time is shorter, the light affects the secretion of sex hormones in the chicken, so it is normal to lay less eggs.

The hen will not lay eggs at a certain age, and you can observe the feathers and body of the hen to know that the old hen is already a retired worker. Then no matter how hard you try, it won't lay eggs, you can kill her and stew her or raise her.

21 gold vita 250 grams, multivitamin 100 grams. The chicken coop is also very important, and the windows should be covered with plastic sheets to keep warm, and the windows should be opened for ventilation during the day! Finally, if the native chickens have laid eggs for more than one year, it is recommended to phase them out, because the hens at this time have passed the peak egg-laying period.

If the above situation is the case, take measures to heat up and keep the chicken house warm, but the effective air circulation must be ensured; At the same time, adjust the feed ratio to increase energy. In fact, not only in winter, but also on hot days, some hens will stop laying eggs. The temperature suitable for hen laying eggs is around 15 to 20 degrees.

If the winter is cold, you can buckle a plastic shed for the hen, so that it will not affect the hen's winter egg production.

First of all, check the environment of the chicken house, whether it is caused by the sudden change of environmental temperature, and whether there is a change of feed in the near future, whether it is caused by intolerance to the feed, and make up the feed in a reasonable way. Also check for disease in the flock, which may also stop laying eggs abruptly.

Because of the change of temperature or feed, so it will drop suddenly, you can increase the temperature appropriately, and add some nutritious feed when feeding, which can improve this problem.

It is very likely that it is too cold in the winter. Then there is the malnutrition of chickens. The ventilation of the coop is not particularly good. There is no good exposure to the sun. All of this can lead to a decrease in production.

In normal feeding.

Under the condition of breeding management, there is a certain regularity in the laying hens of improved breeds. After seeing eggs, the egg laying rate rises rapidly; Within 3 to 4 weeks after the egg production rate reaches 50% (i.e. the group starts to lay), the peak of egg production begins; After a certain amount of time, it slowly declines. In actual production, often due to improper feeding, disease infection and other factors, the egg production of chickens suddenly declines, resulting in large economic losses.

To avoid this from happening, it is important for breeders to understand the various causes of a sudden drop in egg production and to take precautions as early as possible. There are many reasons for the decline in egg laying rate, which are summarized in Table 21.

Table 21 Causes and prevention of declining egg laying rate.

Table 21 Causes and prevention of declining egg laying rate (continued)-1

Table 21 Causes and prevention of declining egg laying rate (continued)-2