Ducks and geese show symptoms of weak feet, paralysis, and swaying walking, which are usually associated with neurological symptoms. Such symptoms are common clinical manifestations of a variety of infectious diseases in livestock and poultry, especially in ducks, and symptoms such as ataxia, head and neck twisting, trembling, leg weakness, and angular arch reflexion can be observed.
1. The types of infectious diseases that cause neurological symptoms in ducks include:
1.Viral infectious diseases: such as duck plague, duckling viral hepatitis, duck influenza, flavivirus disease, adenovirus infection, duckling and duckling parvovirus disease, etc.
2.Bacterial infectious diseases: e.g. infectious serositis in ducks.
3.Nutritional metabolism and drug poisoning: such as vitamin B1 deficiency, sulfonamide poisoning, etc.
2. Methods for differential diagnosis of neurological symptom diseases in ducks include:
1.Depending on the time of onset: different infectious diseases usually occur intensively at specific growth stages of ducks. For example, viral hepatitis in ducks is more common in ducklings between 2 and 12 days of age; Infectious serositis in ducks is more common in ducklings between 15 and 30 days of age; Avian influenza is more common in ducks over 1 month old; Adult ducks are more susceptible to vitamin B1 deficiency, which manifests as sudden paralysis of the leg muscles and a tilted head.
2.According to the characteristics of symptoms: the neurological symptoms caused by different infectious diseases have their own unique manifestations. For example, duck viral hepatitis often causes stiffness and angular arch reflexion; Avian influenza may cause head and neck twisting and stroke-like movements; Infectious seromanitis in ducks may cause depression, head and neck skews, and unsteady gait.
3.Based on other typical symptoms and course of disease: diagnosis should be made with attention to typical symptoms of the disease, such as duck plague that may cause lacrimation, conjunctival edema, eyelid adhesions, and head enlargement; Infectious serositis may cause poor growth, wasting, and prolonged disease.
4.History of combined medications: long-term overdose of certain drugs may lead to acute or cumulative poisoning, such as sulfonamide poisoning, which can cause symptoms such as abnormal body temperature, anorexia, and diarrhea.
5.According to clinical anatomical symptoms: It is a scientific and economical diagnostic method to observe the effects of different infectious diseases on organs by dissecting dead ducks. This requires periodic dissections to accurately characterize the lesion and make a differential diagnosis.
To sum up, for ducks and geese showing neurological symptoms, the onset time, symptom characteristics, other clinical symptoms, drug history and anatomical results should be comprehensively considered to accurately diagnose and take corresponding measures.