Clincal signs of lameness are common in pig herds and lameness is the second most important cause of culling in breeding stock.
Arthritis is a significant cause of lameness and it may be caused by several factors including genetic origin, degenerative disease and infection by microbes. The chief microbial causes of arthritis in pigs are:
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Erysipelas rhusiopathiae
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Haemophilus parasuis
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Streptococcus suis
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Mycoplasma hyorhinis
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Mycoplasma hyosynoviae
When caused by microbes arthritis diagnosis is based on history, clinical signs and pathological changes with confirmation by isolation and identification of the organism.
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