(1) Establish a strict bio-security system (1) The construction of a chicken farm should meet the social and natural conditions of the farm site selection. (2) It is forbidden for visitors to enter or enter the premises. Workers entering the production area should bathe, change clothes, and sterilize ultraviolet rays. Medical examinations are conducted regularly every year. Infectious diseases patients are not allowed to work on chickens. (3) Strictly perform disinfection procedures. 1 The chicken house is sterilized once every 2 to 3 weeks, and it is sterilized once every 1 to 2 months around the chicken farm and in the pit, sinking pit, and sewer outlet. 2 Disinfection tanks should be set up for chicken farms and poultry houses, and disinfectants should be replaced once a week. 3 Chickens should be sterilized on a regular basis in the chicken house. Normally, they should be taken once a week. If they are sick, they can be taken twice a week. They should not be sterilized before, during or after the immunization. After the henhouse is vacated, thorough cleaning, scrubbing, liquid soaking, and fumigation are required. Allow at least 2 weeks after disinfection to enter the chicken. 5 days before the chicken was fumigated again. 4 Regularly clean and fumigation kits, egg trays, feeders and other utensils. (4) Nets and dirty roads should be set in the chicken farm. The clean road is a passage for the special transportation of feed and products; the dirty road is a passage for chickens, dead chickens and garbage. Net roads and dirty roads cannot cross. Dead chickens are transported incineration or deep-buried in time, and chicken manure is transported to designated locations in a timely manner. Stacked biological heat or dry treatment methods are used as agricultural fertilizers and cannot be used as feed for other animals. (5) Ventilation openings in the house should be provided with screens or barbed wire to prevent birds and beasts from entering. To eradicate rats on a regular basis, rat poisons should be administered at regular intervals and fixed points. Dead rats and rats should be collected promptly and detoxified. (II) Adherence to full-entry, full-out system Feeding Full-entry and full-out system refers to the use of a group of chickens raised in a chicken farm or the same chicken house, using a unified feed, uniform immunization procedures, unified management measures and appearance at the same time. The environment is thoroughly cleaned, cleaned and disinfected. The implementation of this system has completely cut off the epidemic of infectious diseases and eliminated chicken house pathogens, thus ensuring the safe production of the next batch of chickens. Egg farms should keep adult chickens, broilers and chicks in isolation, and their equipment, management, and keeping personnel should also be separated. (3) To purchase high quality chicks (1) The commercial chicks shall come from parental breeder chicken farms or professional hatcheries that have passed the approval of the relevant department to issue the "License for the Production of Livestock and Poultry and Poultry and Poultry". (2) Chicks cannot carry infectious diseases such as chicken psoriasis, avian leukemia and mycoplasma. (3) Do not purchase chicks from the affected area, and strictly control the quality of the chicks. (4) Choose a lively, tidy and healthy chicken. (D) Environmental control in the house The temperature, humidity, light and ventilation in the house should meet the requirements of different physiological stages of the chicken to reduce the chance of disease. (5) Standing Clean Drinking Water (1) Drinking water from chickens must meet national standards. Sensory traits must not have unusual odors, odors, or visible substances; pH 6.4 to 8.0; Bacteriological criteria: E. coli no more than 1/100 ml. Drinking water should be analyzed and tested before use and during use. (2) Wash and disinfect drinking water equipment frequently. Closed water-saving drinking water system should be used. (6) Select high-quality feeds (1) Use compounded feeds that meet pollution-free standards. It is recommended to refer to the nutrition standards provided in the Feeding Breeding Manual. (2) Additional additives should not be added to the feed. (3) Feeds include compound feeds, concentrates, additives, and raw materials. They should have a certain degree of freshness on the sensory surface. They should have the color, smell, taste, and histological features that the species should have, without mold, deterioration, worms, etc. , agglomeration and odor phenomenon. Additive products should obtain product production licenses and product approval numbers. No animal feed additives should be used during the laying period and 5 weeks before the start of production. Pharmaceutical industry by-products should not be used as feed ingredients. When using various feeds, follow the label's usage and dosage. (7) According to the standard medication (1) Layer chickens in the early chickens, chickens for the prevention and treatment of diseases in the early stage of the drug to meet the national standards NY5040 standard, that is, pollution-free food for laying hens allowed to use veterinary drugs. (2) In the later period of broiler rearing (7 to 10 days before egg production), the medication is stopped. (3) It is forbidden to use any medicines including Chinese herbs and antibiotics under normal conditions during the egg laying stage. (4) When the disease is treated with drugs during the egg production stage, the eggs produced must not be sold as commercial eggs during the entire process of drug use. (8) Immunization and disease detection (1) Vaccination. According to the requirements of the "Anti-epidemic Law" and supporting regulations, the prevention and inoculation work will be selectively carried out in light of local conditions. (2) Do regular epidemic disease testing (highly pathogenic avian influenza, Newcastle disease, avian leukemia, ferret and typhoid fever, etc.). (3) Drug prevention. The use of Chinese medicine, biological products, mineral medicines and other pollution-free medicines should be adopted, and the use of antibiotics, hormones and harmful chemicals should be strictly controlled. (9) Egg collection and preservation (1) Egg-laying boxes and egg trays should be sterilized frequently. Workers wash their hands before disassembling eggs. (2) Eggs, soft eggs, extra large eggs, and extra small eggs are stored separately when they are collected, but they are not sold as fresh eggs and can be used for egg processing. (3) The shorter the exposure time of the eggs in the house, the better, and the preservation from the egg output to the egg bank must not exceed 2 hours. (4) Immediately after the eggs are collected, they are fumigated with formalin, disinfected and sent to the egg bank for storage. (5) Eggs must meet hygiene standards. The eggshell is clean, undamaged, the surface of the shell is smooth and glossy, the shape of the egg is normal, and the color of the shell conforms to the characteristics of the breed.
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