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Prevention and Treatment of Rheumatic Arthritis in Pigs in Winter

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Rheumatic arthritis in pigs occurs mostly in the more mobile joints such as the shoulder, elbow, hip, and knee, and is often symmetrical, though it can also be migratory. The joints of the spine may also be affected. Acute articular rheumatism presents with symptoms of acute synovitis, with joint swelling, fluid accumulation in the joint cavity, and fluctuation on palpation. When standing, the affected limb is often flexed, and during movement the pig mainly shows lameness, often accompanied by systemic symptoms. When it becomes chronic, symptoms of chronic arthritis appear, with proliferation and thickening of the tissue surrounding the synovium, thickening of the joint, and restricted movement. The affected limb is difficult to lift, movement is slow, the stride is shortened, and the lameness lessens or disappears as the amount of exercise increases.

Rheumatic arthritis in pigs occurs mostly in the more mobile joints such as the shoulder, elbow, hip, and knee, and is often symmetrical, though it can also be migratory. The joints of the spine may also be affected. Acute articular rheumatism presents with symptoms of acute synovitis, with joint swelling, fluid accumulation in the joint cavity, and fluctuation on palpation. When standing, the affected limb is often flexed, and during movement the pig mainly shows lameness, often accompanied by systemic symptoms. When it becomes chronic, symptoms of chronic arthritis appear, with proliferation and thickening of the tissue surrounding the synovium, thickening of the joint, and restricted movement. The affected limb is difficult to lift, movement is slow, the stride is shortened, and the lameness lessens or disappears as the amount of exercise increases. Prevention and treatment measures:

1. Pay attention to cold protection and avoid catching cold: keep the pigpen clean and dry at all times, prevent drafts from striking, and after pigs sweat or get caught in the rain, place them in a sheltered spot to prevent them from being affected by wind and cold.

2. Salicylate therapy: salicylate preparations have obvious anti-rheumatic, anti-inflammatory, and antipyretic-analgesic effects, and are relatively effective for treating acute rheumatism. In addition to oral sodium salicylate, a 10% sodium salicylate solution can also be injected intravenously at 20-100 ml. The use of antipyrine and aminopyrine also has good effects.

3. Cortisone therapy: cortisone has anti-allergic and anti-inflammatory effects, and is also markedly effective for treating rheumatic arthritis. Options include cortisone acetate and hydrocortisone.

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