Canine actinomycosis is a chronic zoonotic infectious disease caused by actinomycetes, which is characterized by tissue hyperplasia and chronic pyogenic granulomatous lesions.
Causes of Actinomycosis In Dogs
Actinomycosis is a chronic zoonotic infectious disease caused by actinomycetes, which is characterized by tissue proliferation and chronic pyogenic granulomatous lesions.symptoms of Actinomycosis In Dogs
Canine actinomycosis occurs in the surface skin and subcutaneous tissue, thoracic cavity, vertebral body, followed by abdominal cavity and oral cavity. It can spread from the lesion site to the brain and other tissues and organs through the blood circulation. Cutaneous actinomycosis occurs mostly in the extremities, posterior abdomen, and tail. The affected skin can form sinus after cellulitis, abscess, rupture, and continuously discharge yellow or brown red secretions and have a foul odor.Chest actinomyces infection can cause the lung and chest cavity to occur at the same time. Clinically, there are symptoms of pneumonia and pleurisy, increased body temperature, cough, pleural effusion, sensitive pain to tapping and pressing the chest, dyspnea, chest fluoroscopy can show pleural effusion and different degrees of shadow in the lungs.
Inflammatory actinomycetes of bone marrow usually occur in the second and third lumbar vertebrae and adjacent vertebrae. There was bone hyperplasia. Periostitis, medullary cavity inflammation. Due to bone hyperplasia and compression of bone marrow, movement disorders of the hindquarters are common in clinical practice, which can lead to paralysis of the hindquarters. Inflammation with ascending infection of the spinal cord can lead to encephalomyelitis and meningitis, with systemic neurological symptoms.
Abdominal type of actinomycetes infection, actinomycetes from the gut into the abdominal cavity, causing peritonitis, mesenteritis, mesenteric lymphadenitis, clinical symptoms such as increased body temperature, ascites, weight loss.
Diagnostic criteria for Actinomycosis In Dogs
It is generally difficult to diagnose the disease, and it is difficult to distinguish it from Nocardia. Actinomycetes are Gram positive, acid-resistant, have branched hyphae and can grow and reproduce in the absence of oxygen. Nocardia is usually partially acid-resistant and can only grow and reproduce in the presence of oxygen. In addition to the above characteristics, in order to make a definite diagnosis, the sulphur-colored particles in the pus can be placed on a glass slide, covered with a glass slide, placed under a microscope, and radially arranged, surrounded by a bacterial sheath, the diagnosis can be made.Actinomycosis In Dogs Treatment
Actinomycetes were sensitive to penicillin, streptomycin, tetracycline and sulfonamides. Long-term treatment with the above-mentioned antibiotics and sulfonamides can be used until the symptoms are resolved. The dosage of penicillin and streptomycin was higher than that of other diseases. Penicillin 100 000 units/kg body weight and streptomycin 20 mg/kg body weight were mixed intramuscular injection, twice a day.The ruptured abscess was treated with surgical treatment. The wound was washed with penicillin and streptomycin saline, and then sulfonamide powder was applied into the wound cavity.
