First, to maintain the stability of the rules and preferences of laying hens, once disturbed or destroyed, growth and production will be affected. To achieve high and stable yields, it is necessary to control the conditions of chicken farming and the orderliness of operations. This is the best measure to reduce stress.
Second, adding vitamins under the influence of certain stress factors can cause metabolic disorders in chickens, which may also affect the use of vitamins. When stressed, vitamin A, vitamin D3, vitamin K, vitamin B2, vitamin C, niacin, and folic acid are particularly prone to cause deficiency. Adding a certain amount of vitamins not only compensates for the consumption of vitamins in the tissues, but also adjusts the metabolic process of chickens and stimulates the production of steroid hormones. Supplementing vitamin E that is 3-6 times higher than required in the diet can increase humoral immunity and stimulate phagocytosis, thereby stimulating the disease resistance mechanism.
Third, the need to be cautious medication Chicks particularly sensitive to nitrofurazone, according to the amount of 0.04% mix this drug even fed more than 10 days, that there is sluggish, feather fluffy, anorexia, until the excitement, convulsions, death.
D. Ventilation and dust reduction At present, attention has been paid to the potential infection of this stress factor by microorganisms, with particular attention to the frequently occurring non-pathogenic microorganism infections. Many infectious diseases are transmitted through the air by dust as a medium. Long-term living in dusty environment, in addition to induced respiratory diseases, chicken metabolism will be affected. If the environmental conditions suddenly change or worsen and the resistance of the flock weakens, there may be an outbreak of disease. This disease is called spontaneous infection. Diseases caused by E. coli, Staphylococcus, Salmonella, etc. are largely caused by Stress induced. Therefore, in order to reduce the incidence of chickens, in addition to the prevention of stress, there should be enough fresh air in the hen house environment.
Fifth, less stress when the use of drugs Sulfa drugs have a strong bactericidal effect, poultry is commonly used drugs. If sulfa drugs are administered to laying hens, the activity of carbonic anhydrase will be inhibited, and the production of calcium carbonate necessary for the formation of eggshells will be hindered. The hens will therefore produce softer eggs or thin eggshells; Due to the inhibition of microorganisms that synthesize vitamin B1 and vitamin K, multiple neuritis and systemic hemorrhagic changes are caused.
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