Prevention of respiratory diseases in winter (2)

The weather is getting colder in autumn and winter, and the temperature difference between morning and evening is bigger. most farmers only pay attention to the warmth of the chicken house and ignore the ventilation in the chicken house, resulting in the high incidence and prevalence of respiratory diseases in autumn and winter. Poultry prone to respiratory diseases is not only related to the special physiological structure of poultry, but also closely related to management factors (non-disease factors) and non-management factors (disease factors). The following is about these aspects! First, the particularity of poultry respiratory system: 1, poultry respiratory system is different from breastfeeding-with 9 air bags 2, no diaphragm! The respiratory tract is connected to the abdominal cavity-peritonitis 3, lung position fixation is poor compared to mammals 4, respiratory tract is relatively long 5, the end point of breathing is not alveoli-the air bag wall has no blood vessels-drugs cannot be reached through blood circulation-abdominal air bags and abdominal cavity combine closely! (difficult to treat) 2. Management factors 1. The change of ambient temperature when the external ambient temperature drops, the chicken coop cannot be heated in time, causing chills outside the chicken flock and inducing respiratory system diseases; when the chicken house temperature is too low, the humidity is too high, poor ventilation, harmful gases exceed the standard, chickens are prone to cough, tracheal rales and breathing difficulties and other respiratory diseases. In winter, the feeding density was increased, only paying attention to the heat preservation work, while neglecting the ventilation and ventilation of the chicken house, resulting in turbid air, hypoxia, harmful gases seriously exceeding the standard, excessive feeding density and malnutrition of the chicken flock, leading to the decline of respiratory mucosal resistance and respiratory diseases. 2. Vaccination stress to immunize chickens is to simulate the mild pathogenesis of the disease, so it will bring high or low immune response. For example, commercial broilers are generally immunized with IBD at 14 days, and mild IBD symptoms and respiratory symptoms will appear after immunization. Generally speaking, chickens are prone to respiratory symptoms such as nose flick on the second day after immunization, which is a normal vaccine stress reaction. if the body has strong resistance without pathogen infection, the symptoms disappear automatically after 2-3 days, and there is a large temperature difference in the morning and evening in autumn and winter. cold and heat stress is easy to cause respiratory diseases. 3. Irritant disinfectants such as laisu water can stimulate respiratory mucosa, destroy the integrity of respiratory mucosal epithelial cells, and cause a series of respiratory symptoms such as nose flick, sneezing, coughing and so on. The above stress factors can destroy the integrity of respiratory mucosa, thus cause respiratory symptoms, and reduce the protective power of respiratory mucosa, leading to the entry of pathogenic microorganisms, causing serious respiratory diseases. In the treatment of this kind of respiratory diseases, we should mainly start with management. 1) maintain ventilation while keeping the temperature of the chicken coop. 2) reasonably plan the number of chickens. 3) at an interval of 3 days before and after immunization, it is suggested that stilbene should be used to fill the immune blank period, rapidly improve the antibody level of the body, reduce the vaccine stress response and enhance the immune effect. 4) in ordinary times, the main thing is to do a good job in the environment of the chicken house, pay attention to ventilation, reduce the concentration of ammonia in the house, and strengthen disinfection. It is recommended that you disinfect with 40 ℃ of water (iodine trioxide) once a day. Third, non-management factors in a narrow sense, poultry respiratory disease is the symptom of a kind of disease. In a broad sense, poultry respiratory disease is the general name of symptoms caused by a kind of disease. If seen in clinical: nose flick, sneeze, snoring, asthma, cough, etc., is only a symptom; such as Newcastle disease, transmission, larynx, slow breathing (mycoplasma), nasal transmission, airbag colibacillosis and other diseases cause respiratory symptoms. Therefore, we should analyze the etiology in time, carry out symptomatic treatment, and not cause side effects by using drugs blindly. Prevention and treatment measures first and foremost, the most important thing is to prevent mycoplasma disease and protect respiratory mucosal epithelial cells When you open your mouth, you should choose drugs that are sensitive to mycoplasma disease and intestinal diseases: Haiwangxin (1) listening to the classification of sound diagnosis: common diseases such as cough, snore in the early stage of gurgling virus disease, cry virus disease of frogs + Escherichia coli + mycoplasma screaming coccidia, enteritis or strange throat barking, dog barking virulent virus disease (such as avian influenza) wheezing, no obvious sound nephritis or mycosis dry cough in the early stage of Newcastle disease, Mycoplasma nose swinging, spray vaccine reaction, mycoplasma (2) preventive measures key day prevention program Shuanghuanglian series: huduqing Ursa Major is mainly used to prevent various respiratory symptoms caused by mycoplasma, influenza, environmental stress and so on. The preventive dose is used continuously for 1-2 weeks. Broiler prevention is mainly used for five hours after immunization, twice in the morning and evening every day. Note: this scheme is generally caused by respiratory symptoms caused by mold or Newcastle disease, but the effect is not good, so it needs to be paid attention to in clinical diagnosis. (3) ideas for the treatment of respiratory diseases-symptomatic treatment: 1. Puerxing (Baihuqing, puerarin) + Shengtaiqiang 2, coughing, sneezing, barking, etc., or chicken flock Yinhuang Oral liquid + Poultry Kangning 3 after 21 days. When it is difficult to judge, Puerxing + Yinhuang Oral liquid + Shengtaiqiang can be used in combination-except mold, chlamydia, typhoid, etc. The respiratory symptoms caused can basically be cured. Medication according to the location of the lesion and mucus 1, upper respiratory tract infection-Ganshenkang + Qiangtai 2, lower respiratory tract infection-Shuanghuanglian + bird Kangning or feeling good 3, mucus in the tube, snoring dull-Ganshenkang + Shengtaiqiang 4, lung infection: lung necrosis, there is yellow cheese-feeling fast + Yi Meikang lung purple hyperemia-Dachuan + astragalus 5, airbag infection, airbag turbidity There is yellow and white cheese-feeling good + astragalus flavin (4) conventional adjuvant treatment measures 1, repair respiratory tract damage mucosa, anti-septicemia-VA, VC2, increase temperature, increase ventilation so that chickens can breathe heartily 3, strengthen disinfection with chickens to reduce the content of microorganisms in the house. Note: respiratory symptoms are mostly viral diseases, don't forget to add antiviral drugs when the condition is serious, you can choose aerosol administration, spray administration saves time and effort. Drug inhalation is accurate, uniform and effective. Aerosol administration is especially suitable for chickens with severe mixed infection, dying, not eating or drinking, and severe pneumonitis. Aerosol administration can quickly control death, quickly relieve respiratory symptoms, reduce stress reaction of chickens, and is conducive to disease recovery. Usage and precautions 1 spray every corner of the chicken house with warm water and disinfectant before aerosol administration The aim is to first eliminate the dust in the house and reduce the content of pathogenic microorganisms in the air. 2 the spray head is about 80 cm away from the chicken head, the aerosol treatment group is Pulxing + azithromycin (tylosin, tyramycin, neomycin sulfate, penicillin streptomycin, etc.) Ursa Major + azithromycin (Tylosin, tyramycin, neomycin sulfate, etc.) Penicillin streptomycin, etc.) + ammonium chloride-Thank you for sharing! -- Oh, stop it. I was so miserable by this disease that I threw away more than 10 piglets. At the end of this post, the editor of Xiao Hua Tuo replied at 13:16 on 2009-12-6, "Liu Kaihua take medicine and find someone to treat it immediately!" It's too serious! What are the symptoms?