How to distinguish between healthy and sick chickens

In recent years, the incidence of chickens in China has been severe and the mortality rate is high, causing huge economic losses to the aquaculture industry. Poultry disease is one of the key issues that plague China's poultry industry. For professionals who have been engaged in feeding for a long period of time, it is easy to judge from the anomalies of chickens (groups) whether they have the disease based on their rich theoretical and practical experience, and it is relatively difficult for inexperienced people, generally only on a large scale. The disease has obvious symptoms and even when it is dead, it can be found that the flock is sick. At this time, most of them have entered the middle and late stages of the epidemic. Generally, individuals with weaker and weaker conditions often develop symptoms first. As the number of epidemic increases increases, even timely diagnosis and treatment are difficult to control. How to distinguish between healthy chickens (groups) and diseased chickens (groups), now introduce several identification methods: Appetite and feed intake: Healthy chickens have a strong appetite, consumption of feed and drinking water are relatively stable, and individual There is a certain weight; while the diseased chickens do not eat or eat less, the amount of feed and water consumed by the flock varies greatly, and the individual is also thin and light. Therefore, according to the amount of feed each day (times), grasp the increase or decrease in food intake, to further determine the health of the flock. For example, when the temperature of the rearing environment changes greatly, the feed intake will change; some infectious diseases can cause the loss of appetite or even abolish the chicken's appetite, while the infection of typhoid fever, cholera and Aspergillus are often thirsty. Look at Cloaca and Excretions: Healthy chickens have cleaner feathers around the cloaca, chicken droppings are cylindrical, thin and curved, or rolled into discs, with a white thin layer of urate on the outside; and feces color and shape of diseased chickens are There are changes and often stick around the cloaca. The chicks were white paste or lime-like when they became white; Newcastle disease was yellow, yellow-green or gray-white dilute feces, a bit of bleeding around the anus; Infectious bursal disease, excreted yellow-white water-like dilute feces; Brown brown red stool or bloody stool. In addition may also prompt other diseases such as cholera, Marek's disease and leukemia. Look at body temperature: The normal body temperature of a chicken is 41-43°C. The normal body temperature of chickens is 3°C lower than that of chickens, and the heat preservation capacity is weak. Therefore, the chicks in the low temperature period are easy to “pile up” for heating, so the brooding insulation work must be done well. In general, the temperature of acutely sick chickens rises, they breathe quickly and slowly, and irregular heartbeats are irregular. When suffering from respiratory diseases, it produces runny nose, cough, breathing and snoring, sometimes sneezing, and there are sticky exudates in the upper airway and airbags, swelling of the eyelids, and blindness and other symptoms. Such as low pathogenic avian influenza, body temperature increased significantly, feed intake decreased, egg production decreased significantly, and eggshell white. When watching behaviors and forms dynamics, healthy chickens are full of energy, agile, strong gait, diligent in fast aggression, and feathers clinging to them; while sick chickens are apathetic, arching their necks, slow movements, unstable steps, and lazy Food, feathers loose, wings tail drooping. When healthy, healthy chickens breathe smoothly, do not open their mouths, and their eyes are clean and flexible. The diseased chickens have difficulty in breathing, open their mouths from time to time, have red eyes or unclear eyeballs, turn their necks and eyes closed, secrete their secretions, and respond to external sounds. Insensitive, inflexible head and neck torsion, or head inserted in the wings and so on. At the same time, it can also be judged from the sound. Healthy chickens are long and loud; sick chickens are weak and hoarse. If the exclamation of the "squeaking" sound of pain may be the performance of the chicken whitefly; and coughing and sneezing may be related to Newcastle disease, infectious bronchitis and mycoplasma disease.

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