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Yesterday, a chicken friend took a few pictures of chicken liver bleeding ** and sent it, saying that the chicken had fatty liver, went to the corn to replace it with bran, removed the oil, added choline, no effect, damn it, and asked me what's the matter?
Let's take a look at the causes and methods of liver rupture in laying hens:
Caged laying hens are prone to liver rupture, especially in the egg-laying stage, resulting in sporadic injuries to chickens. In many cases, chicken farmers find that the liver is ruptured and there is oil in the abdominal cavity, and they generally suspect the problem of fatty liver.
So, how can you tell if liver rupture is caused by fatty liver?
1. Fatty liver in laying hens.
Most of the laying hens that are overly obese begin to die sporadically after 300 days.
Symptoms: excessive obesity, a large amount of fat in the abdominal cavity, enlarged liver, yellow and greasy, extremely brittle and brittle like mud.
Fatty liver in laying hens, yellowing of the liver, and increased abdominal fat.
**: Caged laying hens have little space to move around, plus too much energy intake. Long-term feeding of high-energy and low-protein feed, insufficient protein.
Choline, methionine, vitamin B12, vitamin E, etc. are involved in the synthesis of proteins, and the lack of these nutrients in the feed affects the transport of fat. Mold and toxins can easily damage the liver and cause liver dysfunction.
**Method: Dalong Daganning can be used for hepatosplenomegaly, liver rupture and bleeding caused by drugs, toxins and other reasons in egg poultry or breeding birds, effective in 1 day, and death in 2 days.
In fact, in addition to fatty liver, the following 4 reasons can also cause liver rupture and bleeding:
2. Inclusion body hepatitis.
Laying hens mostly occur after 18 weeks, and the death is severe 3-4 days after infection, and the death decreases after 5 days, and the course of the disease is 10-14 days.
Symptoms: discharge of white stool, pale comb, swollen liver, discoloration, brittleness, mottled bleeding on the liver. The kidneys and spleen are swollen and have bleeding spots.
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What should I do if the laying hens lay fewer eggs and the yield is low? In the case of laying hens laying fewer eggs and low yield, you can choose to sell the chickens, in addition, and then accompany the laying hens.
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What should I do if the laying hens lay fewer eggs and the yield is low? First feed him well, and then have the right temperature to keep him in the house, especially in winter. He would. The environment in which the eggs lay is fine.
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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.
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The decrease in egg production may be due to environmental factors such as light and temperature, or it may be due to insufficient nutritional supplementation.
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It is that the ratio of feed is not very reasonable, it may be a lack of protein, it may be that the management is not in place, or it may be that the feeding is unbalanced.
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Because the feed ratio is unreasonable, the protein can be insufficient, and the management can not be in place, and the feeding is unbalanced.
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1. Reasonably increase nutrition.
When the summer temperature reaches 25, the diet of the chickens should be adjusted reasonably, otherwise it will seriously lead to a decrease in the feed intake of the chickens, which in turn will lead to a decrease in the egg production of the flock. Therefore, in the summer high temperature season, digestible nutrients with crude protein content should be appropriately added to the chicken diet, and the utilization rate of amino acids should be improved.
2. Adjust the feeding time.
The hot weather has led to a decrease in feed intake in the flock. In summer, due to the low temperature in the morning and evening, the feed intake of the flock is relatively large. Therefore, the feeding time of the flock should be adjusted appropriately in the summer.
3. Appropriate addition of vitamin C
Vitamins can improve the ability of chickens to resist stress, in the summer can be added to the diet of laying hens, or added to the drinking water of vitamin C, or in the feed at high temperature to add 100 150mg kg of VC can significantly increase the thickness of the eggshell, improve the color of the eggshell. This not only maintains and increases the egg production of the chickens, but also increases the resistance of the chickens to bacterial and viral diseases.
4. Sufficient, fresh and cool drinking water.
Water accounts for about 70% of the body composition of chickens, participates in many biochemical reactions in the body, and plays a vital role in regulating body temperature. Providing the hens with sufficient, guarded, cool drinking water in summer is essential to ensure the health and production of the flock.
5. Reduce the feeding density.
Flock density should be based on ambient temperature, humidity and type of house. In the hot summer, it is of great significance in production practice to minimize the feeding density of chicken houses, which can reduce the generation of undesirable gases in the house and maximize its production performance.
The above five points are the problems that layer farmers must pay attention to in summer, only in this way can we ensure that the whole chicken house creates the greatest economic benefits for farmers.
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