Poultry Disease Management and Control
Varied forms of poultry diseases occurs in all corners of the world. Some have regional impact... View more
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Causes Paralysis in Poultry
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Causes Paralysis in Poultry
*What causes Poultry paralysis?*<div>
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</div><div>*Newcastle disease*</div><div>
</div><div>Sick chickens often have neurological symptoms such as leg paralysis, lameness or instability, and head and neck twisting.</div><div>
</div><div>The disease is easy to diagnose due to the obvious symptoms and anatomical lesions.</div><div>
</div><div>Prevention and treatment are often carried out according to the immunization program and antibody level.</div><div>
</div><div>Emergency immunization after the onset often has a better effect. However, emergency vaccination must also consider whether there is mixed infection of mild influenza virus, and immunization is cautious!</div><div>
</div><div>*Marek’s disease*</div><div>
</div><div>It mostly occurs in chickens from 2 months to 3 months old, but chickens from 1 month to 18 months will all get sick.</div><div>
</div><div>When the neurotype Marek occurs, the sick chicken just walks erratically at first, and gradually develops to paralysis of one or both legs, and in severe cases, the paralysis cannot be afforded.</div><div>
</div><div>The typical symptom is a “big split” position with one leg forward and one leg back. The muscles of the sick chickens are atrophied, and the claws are more bent.</div><div>
</div><div>*Infectious encephalomyelitis*</div><div>
</div><div>Most of the sick chickens developed neurological symptoms at the age of 1-2 weeks, and the initial performance was sluggishness. Then the chicks are unwilling to move and squat on their hocks, or have paralysis of one or both legs, and sometimes obvious paroxysmal tremors can be seen in the legs, wings, and head. Necropsy changes were not obvious, individual chickens had edema of the cerebellum, and there were small gray areas in the muscle layer of the glandular stomach.</div><div>
</div><div>There is no effective treatment for this disease. The sick chickens can be isolated, given a comfortable environment and adequate diet, and pay attention to disinfection.</div><div>
</div><div>*Enterotoxic syndrome*</div><div>
</div><div>The occurrence of enterotoxicity is easy to frighten the group, the legs are paralyzed, the body is large, the head trembles, and it is not that the legs cannot stand. The toxin is absorbed by the broiler, causing paralysis.</div><div>
</div><div>Loss of appetite, fried hair, in severe cases, the feces are white and thin, not shaped, and there is undigested feed in the feces. Before dying, the chickens ran wild, screamed, fell to the ground paralyzed and died. The pathogenesis is more common in viral infection, Clostridium welchii, intestinal coccidiosis, mycotoxins and so on.</div><div>
</div><div>*E. coli (arthritis)*</div><div>
</div><div>Broilers are generally more common in chicks or complicated with Escherichia coli septicemia in the later stage. The incidence of chicks is mostly related to the causes of breeders and hatching contamination. Affected chicks have loose feathers, are afraid of getting together in the cold, are thin, and stand out. Discharge of gray-white loose feces, contamination of white feces around the anus. The wings are drooping, the joints are paralyzed and swollen, and it is difficult to stand up.</div><div>
</div><div>Walking on one leg in many cases can also occur with Salmonella. In the later stage, the symptoms of the pericardial liver appeared, and the joint disorder, and the white rice soup-like loose stools with green in the middle.</div><div>
</div><div>*Mycoplasma synovialis*</div><div>
</div><div>The infected joints and paw pads of the sick chickens are swollen, limp, often accompanied by sternal cysts, and their appetite for food decreases. On autopsy, there was a thick, cheesy white exudate in the affected joint. </div><div>
</div><div>Mold, feed nutrition, poor environmental conditions, etc. can make the disease worse.</div><div>
</div><div>The disease can be transmitted vertically, breeders should be regularly quarantined and vaccinated. At the same time, pay attention to improve the feeding level, there are many Mycoplasma synovialis in laying hens, pay attention to observation and treatment.</div><div>
</div><div>*Viral arthritis*</div><div>
</div><div>Sick chickens showed lameness, swelling of the calf tendons, and some ruptures, accompanied by subcutaneous hemorrhage.</div><div>
</div><div>Necropsy tarsal joints or elbow joints contain yellow or blood-colored exudates. For prevention, inactivated viral arthritis vaccine can be vaccinated before the breeder starts giving birth. There is no effective treatment after the onset of the disease. It is recommended to focus on prevention.</div><div>
</div><div>*Staphylococcus infection (arthritis type)*</div><div>
</div><div>Certain diseases or human factors are the incentives for the occurrence of staphylococcal disease, such as thorn species immunity, trauma, poor feeding and management, etc.</div><div>
</div><div>The joints of the sick chickens are swollen, purple-red or purple-black, and some are ulcerated and form black crusts.</div><div>
</div><div>Some chickens have gangrene and dryness at the tarsal end, and there is serous fluid in the dissecting joint capsule, or yellow purulent or serous fibrinous exudate.</div><div>
</div><div>In fact, staphylococci can be purified from the diseased chickens of Mycoplasma synovialis discovered in the past two years.</div><div>
</div><div>*Insufficient vitamins or calcium and phosphorus*</div><div>
</div><div>Generally, there are more occurrences about 10 days in cages. Generally, it is caused by insufficient activity. Chickens, legs are left, or paralysis, and the femoral head is easily broken every day. This disease is not common in broiler farming today.</div><div>
</div><div>Combined with actual production, all diseases that can cause chicken diarrhea can cause broiler paralysis, such as: enterotoxic syndrome, viral arthritis, gout, Mycoplasma synovialis, coccidiosis, Newcastle disease, etc.</div><div>
</div><div>Diarrhea and discharge-like feces accompany broiler chickens for almost a long time, resulting in malnutrition of chickens, weak legs and inability to stand.</div><div>
</div><div>The main causes are disease infection, hidden mold in feed, excessive harmful gas in the house, poor ventilation, existence of immunosuppression, etc. Therefore, antibiotics cannot be solely relied on to solve the problem of intestinal diarrhea in broilers.</div><div>
</div><div>To find the root cause, symptomatic treatment. That is to improve the environment, but also to protect the physiological function of the intestine. High stocking density, low temperature, wet litter, poor ventilation, uneven net bed, wire or sharp objects on the net bed, stress and other factors provide powerful conditions for trauma infection. </div><div>
</div><div>Therefore, strengthening management and providing comfortable living space for chickens are also effective measures to reduce paralyzed chickens.</div> -
41 Replies
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Bacterial infection
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