perosis


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perosis

a disease of young birds caused by a nutritional deficiency of manganese and characterized by a deformity of the leg bones. There is gross enlargement of the tibiotarsal joint and deformity of the bones above and below the joint, and slipping of the gastrocnemius tendon from the condyles. The birds are crippled and usually die of starvation.
References in periodicals archive ?
Poor growth, hepatic fatty infiltration, and perosis were all observed in choline-deficient Pekin ducks (Bernard and Demers, 1949; Wen et al.
However, ad libitum feeding has been implicated in mortality and health problems such as ascites, tibial dyschondroplasia, necrosis of the femoral head, angular and torsional long bone deformities, perosis, spinal deformities, obesity and Sudden Death Syndrome [1, 3, 4].
In the chicken, a choline deficiency leads to perosis and impaired reproductive function.
Mrs Jenkinson suffers from osteo arthritis and osteo perosis.
1961), encephalomalacia, exudative diathesis for vitamin E, polyneuritis, curled toe paralysis, perosis, impairment of food utilization for selenium (Swain, 1996).