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Three kinds of diseases in cage laying hens and their control

2017-03-24 18:05 Source:
Cage chicken is to raise chickens in cages welded with metal wires, and then design different types of cages according to chicken species, gender and age. There are chicken cages, rearing cages, egg cages, breeding cages and cock cages, which can improve the feeding density and save feed. However, cage hens are generally prone to fatty liver syndrome, egg drop syndrome and fatigue The disease and its prevention and treatment methods are introduced as follows:
 
Fatty liver syndrome
It is more common in high yield layers. However, the egg production rate was gradually shortened, or the egg production rate did not reach the peak. Sometimes some sick chickens die suddenly. Because fatty liver disease is very common in laying hens, it is not easy to be detected under normal conditions, so it is easy to be ignored by farmers. The results of autopsy showed that liver fat deposition was serious in laying hens, and excessive fat was deposited around organs such as liver and kidney, which led to liver hemorrhage and lipid metabolism disorder. Prevention and control methods: 1. Increase the feed protein level by 1% ~ 2%, and add a certain amount of bran, the situation of sporadic death occurred in the late stage of feeding, adding 500g zhuangyou (bile acid powder, aminobutyric acid, xylooligosaccharide) 500 g per 1000 kg of feed for 15-20 days can significantly control the death, and then continue to use the better effect; 2. Limit feeding before laying eggs to control the weight of chickens.
Egg drop syndrome
This disease is more common in laying hens with brown shell eggs. When the egg production rate dropped to 20% ~ 50%, the egg quality also decreased, such as thin shell egg, soft shell egg, colorless egg, kidney drum egg, sand egg and so on. The hatching rate of breeding eggs decreased and the stillbirth rate increased. Even if the chicks were hatched, the vitality was weak and the survival rate was low. The diseased chickens had soft and green feces, and their crowns were blue and purple with neurotic symptoms. Their food intake did not decrease. Methods: 1. Add zhuangyou (bile acid powder, aminobutyric acid, xylooligosaccharide) and vitamin B12 in the diet to protect the liver and regulate the intestinal tract; to control infection, add 0.2% oxytetracycline or 0.2% furazolidone. 2. Increase the protein level of feed and keep it at 18% ~ 19%.
Fatigue in cages
It is mainly due to the deficiency of calcium, phosphorus and vitamin D in the diet of chickens, or the improper proportion of calcium and phosphorus, as well as the long-term lack of exercise, etc., which often occurs shortly after opening or in the early stage of laying eggs. Sick chickens often lie on their side in cages, unable to stand, and then paralyzed; slow reaction, many sick chickens have wing and leg bone fracture, bone wall is thin and brittle. Prevention and control methods: 1. Add appropriate amount of vitamin C or vitamin D in the early stage of laying eggs. The available phosphorus in feed was kept at 0.45%. Vitamin D50 IU was injected intramuscularly to the sick chicken to promote its absorption of calcium. 2. Insist on feeding compound feed. 3. Put sick chickens on the ground and let them move freely.
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