Improving the Effectiveness of Layer Chicken Breeding to Prevent "Three Symptoms"
The disease occurred in the early laying hens. Most of the onset time was from 2 am to 2 pm the same day. The chicken squeaked. Cause frightened chickens. The body temperature of the diseased chicken increased, his legs stretched straight back, his body was paralyzed, and his breathing was difficult. His hands touched the cloaca to touch the eggs. If the midwife was not promptly removed, the laying hens died quickly. After laying eggs, the affected chickens could not afford to lie down or shed, and the milky white egg whites were loose stools or white, green and yellow sticky loose stools. Egg production decreased, and soft shell eggs and shelled eggs increased. The main causes of morbidity are premature bred chicken cages, lack of exercise, and weight loss, which are caused by the invasion of E. coli and cause salpingitis; followed by high levels of protein in feed and lack of essential vitamins and trace elements. Its prevention measures are:
It is not too early to lay the laying hens in the cage. Usually, they will start production around the age of 150 days. The cage should be carried out 2 weeks before the start of production.
The protein content of laying hens should not be too high. The precrude egg protein content was 12%, and each chicken had to add 1 ml to 2 ml of cod liver oil daily. For each 100 kg feed, 0.22 g of sodium selenite and 10 ml to 25 ml of vitamin E are added.
Egg laying hens can inject 2 ml to 5 ml of vegetable oil or paraffin oil into the cloaca, and then use both hands to squeeze them up and out to remove the eggs.
Mixed with chloramphenicol. The dose was 0.3% of the feed for 5 days, and each chicken was intramuscularly injected with gentamicin 20,000 to 40,000 units twice a day for 3 days.
Egg Drop Syndrome This disease is a chicken infectious disease caused by adenovirus. The main feature is the decrease in egg production rate of laying hens. The hens that produce brown shell eggs are most susceptible, and the prevalence of laying hens that produce white shell eggs is lower, and chickens that are above 35 weeks old are less likely to develop disease. Mild dyspnea, sparse stools, and purple crown appeared between the first week and the second week of illness. The typical symptom is the sudden emergence of egg production in diseased chickens. The egg production rate is 10%~30% or even 50% lower than normal in 2 weeks to 3 weeks. It is accompanied by soft shelled eggs, shellless eggs, and shell eggs. Decolorizing eggs, rough surface of eggs, protein quality, egg yellow, protein thin as water, egg breakage rate is high. Its prevention measures are:
Can be added to every 10 kg of dietary oxytetracycline and 0.5 to 0.7 grams of furazolidide mix, treatment should be added to 2 grams, and in the diet to increase vitamins, minerals, protein, vitamin B12 and The content of vitamin E can prevent the occurrence of egg drop syndrome.
Treatment can be combined with traditional Chinese medicine and Western medicine, Chen Pi San (Chenpi, Codonopsis, Radix Astragali, Radix Rehmanniae, Phellodendron, Magnolia Officinalis, Motherwort equal parts for a total of 40 grams, oxytetracycline 2.5 grams, bone powder and auxin 100 grams, after treatment, the egg quality began to improve, the egg production rate rose, 7 days after the stop feeding furazolidone, 10 days to 14 days of egg production rate can be restored to normal.
Vitamin D deficiency is mainly due to the lack of vitamin D in layer feeds. When vitamin D is deficient, thin shell eggs and soft shell eggs begin to appear in 2 months to 3 months. The quantity increases, then the egg production drops, and the final production of eggs is complete. It stopped and the laying hens had the same skeletal deformation as those of young chickens. The claws and keels became soft, and the later long bones were prone to fractures. The joints were swollen and the legs were weak, showing a squat posture and unable to stand. Its prevention measures are:
For high-production laying hens, attention should be paid to supplementing diets rich in vitamin D, such as hay, cod liver oil, and fish oil, in order to prevent the occurrence of this disease. At the same time, let the layer of chicken more sun, promote the synthesis of vitamin D, as long as the ratio of calcium and phosphorus in the feed is reasonable, the general production of layer chicken feed containing 260 international units of vitamin D per kilogram is to meet the requirements.
For laying hens presenting vitamin D deficiency, feed 3 to 5 drops of cod liver oil three times daily.
It is not too early to lay the laying hens in the cage. Usually, they will start production around the age of 150 days. The cage should be carried out 2 weeks before the start of production.
The protein content of laying hens should not be too high. The precrude egg protein content was 12%, and each chicken had to add 1 ml to 2 ml of cod liver oil daily. For each 100 kg feed, 0.22 g of sodium selenite and 10 ml to 25 ml of vitamin E are added.
Egg laying hens can inject 2 ml to 5 ml of vegetable oil or paraffin oil into the cloaca, and then use both hands to squeeze them up and out to remove the eggs.
Mixed with chloramphenicol. The dose was 0.3% of the feed for 5 days, and each chicken was intramuscularly injected with gentamicin 20,000 to 40,000 units twice a day for 3 days.
Egg Drop Syndrome This disease is a chicken infectious disease caused by adenovirus. The main feature is the decrease in egg production rate of laying hens. The hens that produce brown shell eggs are most susceptible, and the prevalence of laying hens that produce white shell eggs is lower, and chickens that are above 35 weeks old are less likely to develop disease. Mild dyspnea, sparse stools, and purple crown appeared between the first week and the second week of illness. The typical symptom is the sudden emergence of egg production in diseased chickens. The egg production rate is 10%~30% or even 50% lower than normal in 2 weeks to 3 weeks. It is accompanied by soft shelled eggs, shellless eggs, and shell eggs. Decolorizing eggs, rough surface of eggs, protein quality, egg yellow, protein thin as water, egg breakage rate is high. Its prevention measures are:
Can be added to every 10 kg of dietary oxytetracycline and 0.5 to 0.7 grams of furazolidide mix, treatment should be added to 2 grams, and in the diet to increase vitamins, minerals, protein, vitamin B12 and The content of vitamin E can prevent the occurrence of egg drop syndrome.
Treatment can be combined with traditional Chinese medicine and Western medicine, Chen Pi San (Chenpi, Codonopsis, Radix Astragali, Radix Rehmanniae, Phellodendron, Magnolia Officinalis, Motherwort equal parts for a total of 40 grams, oxytetracycline 2.5 grams, bone powder and auxin 100 grams, after treatment, the egg quality began to improve, the egg production rate rose, 7 days after the stop feeding furazolidone, 10 days to 14 days of egg production rate can be restored to normal.
Vitamin D deficiency is mainly due to the lack of vitamin D in layer feeds. When vitamin D is deficient, thin shell eggs and soft shell eggs begin to appear in 2 months to 3 months. The quantity increases, then the egg production drops, and the final production of eggs is complete. It stopped and the laying hens had the same skeletal deformation as those of young chickens. The claws and keels became soft, and the later long bones were prone to fractures. The joints were swollen and the legs were weak, showing a squat posture and unable to stand. Its prevention measures are:
For high-production laying hens, attention should be paid to supplementing diets rich in vitamin D, such as hay, cod liver oil, and fish oil, in order to prevent the occurrence of this disease. At the same time, let the layer of chicken more sun, promote the synthesis of vitamin D, as long as the ratio of calcium and phosphorus in the feed is reasonable, the general production of layer chicken feed containing 260 international units of vitamin D per kilogram is to meet the requirements.
For laying hens presenting vitamin D deficiency, feed 3 to 5 drops of cod liver oil three times daily.
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