Why should salt be added to the chicken diet?
Chlorine and sodium elements exist in the body fluids, soft tissues and eggs of chickens, which maintain the acid-base balance of chickens, maintain the balance between osmotic pressure between cells and blood, and maintain a certain amount of moisture in chicken tissues. In addition, they are raw materials for the formation of gastric juice and gastric acid, which can promote the activities of digestive enzymes and play an important role in the digestion and absorption of fat and protein. Salt can improve the palatability of diet, stimulate appetite and improve feed utilization.
Therefore, salt is both an essential nutrient and a condiment. If there is insufficient salt in the chicken diet, it will cause loss of appetite and digestive disorders, chicken growth retardation, pecking addiction, laying hen weight, egg weight loss, egg production rate decreased. The salt content in chicken diet should be 0.37%~0.5%, and the dosage must be accurate. The salt content of animal feed should be considered when formulating diets, and then the amount of supplementary salt should be determined. If salted fish powder is used in the diet, its salt content must be analyzed first, otherwise salt poisoning is often caused by excessive consumption of salted fish powder.
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Prevention and control of acariasis in chicken knee
Chicken knee acariasis is a disease caused by scabies, which is often characterized by pruritus and limestone leg disease. The main results are as follows: 1 the pathogen of chicken pruritus is chicken knee mite, which is round or oval, about 0.3mm, which often invades the skin along the feather and parasites on the root of the feather, causing inflammation. Lesions are more common in the back, wings, buttocks, thigh and other parts of the chicken, local itching, unfeathering, so it is called pruritus. The diseased chicken pecks its feathers, causing them to fall off, turn red and form on the skin.
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Prevention and treatment of common diseases in chickens-selenium deficiency (exudative diathesis)
Selenium deficiency is one of the common trace element deficiency in young chickens, and meat type and dual-purpose type are common. With chest and abdomen, thigh, subjaw, neck subcutaneous loose parts of serous exudation as the main feature, so it is also called exudative quality disease. 1. Lack of selenium in etiological feed is the main cause of this disease. The incidence of the disease was significantly different among breeds. The incidence of the early fast-growing and fast-growing meat type and dual-purpose type was much higher than that of the egg type. The age of the disease was from 14 to 70 days old.
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