鸡感染大肠杆菌后的症状与治疗方法（Symptoms and treatment of chicken infected with Escherichia coli）

鸡感染大肠杆菌后的症状与治疗方法（Symptoms and treatment of chicken infected with Escherichia coli） 鸡感染大肠杆菌后的症状与治疗方法(Symptoms and treatment of chicken infected with Escherichia coli) Clinical symptoms of chickens infected with Escherichia coli A, pericarditis, parahepatitis, airsacculitis: the disease every day 5 to 12 week old chickens, 6 - 9 weeks of age for the onset of peak. Chang Jifa has a variety of respiratory diseases, cough and dyspnea, white, yellow, green or greenish stools, and feathers around the anus. At necropsy the balloon membrane thickening, with yellow white or grey white caseous exudate, liver surface and epicardial yellow white or grey white fibrinous exudate, the above changes exist at the same time. Sometimes it is seen that the oviduct of the hen is swollen and has caseous exudate. Two, Youchu umbilical cord inflammation: the early death of slender, navel dysraphism, skin irritation around the yolk sac wall, malabsorption, hyperemia and hemorrhage. Three, the ovary and vitelline peritonitis: ovarian egg laying poultry infection, deformation, rupture of follicle, abdominal cavity filled with yolk liquid and peritonitis, resulting in intestinal adhesion, later yolk solidification, prone to corruption in the abdominal cavity, bowel wall, abdominal wall green, smell. Four, Salpingitis: bird in laying the fallopian tube significantly enlarged, the inner product of caseous exudate, sometimes with soft eggs, egg contents, discoloration of corruption. Five, granuloma of subcutaneous connective tissue, muscle, lung and mesenteric and other parts of common yellow granuloma. Six, enteritis: Escherichia coli can also cause serious pigeon gastroenteritis, diarrhea, anal rectal mucosa around the feather by pollution, congestion, hemorrhage, full of green manure Seven, avian cellulitis: avian cellulitis is a chronic skin disease of broiler abdomen, abdomen and thigh lesions seen in the line between the skin redness, damage and hardening of the subcutaneous white arm like stem necrosis, liver swelling, congestion, fibrinous perihepatitis, heart disease. Eight, other: Escherichia coli can cause pneumonia, pulmonary congestion, bleeding, emphysema. Treatment: similar symptoms: acute bleeding can be seen white, yellow, green, thin stool. (with Newcastle disease and infectious bursal disease, histomoniasis in chicken, chicken coccidiosis and necrotic enteritis, chicken streptococcus disease, Pseudomonas aeruginosa disease, fowl typhoid, chicken leukocytozoon disease, ulcerative enteritis, pullorum disease and fowl tuberculosis, avian rotavirus infection have similar symptoms) Distinguish symptoms: can show a variety of symptoms, acute bleeding mainly manifested in fibrinous pericarditis and liver disease, the liver has punctate necrosis. Treatment method: Avian Escherichia coli is a disease caused by pathogenic bacteria, so comprehensive control measures can be effectively controlled. To strengthen management of chickens Through several environmental conditions and improve the health of chicken, chicken coop disinfection with 1210 powerful livestock sterilizing agent regularly, keep the brood care temperature, feed and water, to prevent air pollution, to eliminate various predisposing factors. The fecal pollution control Once the eggs contaminated by feces have become an important means of Chicken Pathogenic Escherichia coli populations spread, so in the egg laying within 2 hours after fumigation, out of eggs broken or fecal contamination of the obvious trace. The preventive administration The 3~5 day old chickens and 4~6 day old chickens were given 2 courses of antibiotics respectively, and better preventive effects were obtained. The injection of vaccine In recent years, inactivated vaccine has been used both at home and abroad to prevent E. coli disease. Currently, the commonly used Escherichia coli polyvalent aluminum hydroxide vaccine and multivalent oil with inactivated vaccine have better effect. Because there are a lot of Escherichia coli serotypes, so the isolates from the local or the chickens, identify the serotypes after processed seedlings will receive better preventive effect. In the whole period of laying hens, colibacillosis was significantly reduced, and the rate of fertilization, hatching rate and the rate of healthy chicks were improved, and the incidence of chicks was decreased. In order to ensure the prophylactic effect of vaccine, two immunization should be carried out, the first time is 4 weeks old chicken, and the second is 18 weeks old chicken. The chickens after the onset of drug treatment Escherichia coli is sensitive to antibiotics, such as gentamicin, chloramphenicol, kanamycin, neomycin, norfloxacin, chain toxin has a good therapeutic effect, but found in the process of prevention and treatment of this disease in recent years, Escherichia coli highly resistant to drugs, such as fruit farms often use these drugs for the prevention of disease is due to Escherichia coli resistant to these drugs and reduce the treatment effect, so it should be treated with drugs, drug sensitivity test of Escherichia coli were isolated in the early stage of infection, choose sensitive drugs or choose the past with less drug administration group. If it is a mixed infection of E. coli and other pathogenic microorganisms, it is still necessary to select a drug that is effective at the same time as another pathogen. Early administration can control the early infection of the sick chicken, which helps to cure it, while preventing the emergence of new sick chickens. In the later stage of colibacillosis, pathological changes such as air sac inflammation, liver inflammation, pericarditis and so on are formed in the diseased chickens, and the therapeutic effect is not good at this time. Chinese medicine treatment: Cork 100 grams, 100 grams of Rhizoma Coptidis, rhubarb 50 grams, 1500 ml of water, microflame Decoction to 1000 ml, take medicine, medicine dregs as method and fry a liquid, with two fry at the ratio of 1:10 diluted in water, and 1000 feather free drink, one dose a day for three days.