The Effect of Intraperitoneal Injections of Manganese, Zinc, Aluminum, and Iron Salts on the Occurrence of Slipped Tendon in Chicks

Abstract

SLIPPED tendon, a leg disorder of young growing chicks, also known as perosis or hock disease, is characterized by a bowing of the leg at the tibio-metatarsal joint, enlargement with a tendency toward flattening of the joint and finally slipping of the Achilles tendon from its normal position. The tendon may slip to either side of the joint and one or both legs may be affected.This disorder was differentiated from rickets by Hogan and co-workers (1928). Excessive amounts of minerals (Card, 1929–30; Hunter and co-workers, 1930; and Schaible and co-workers, 1933, and others), particularly phosphorus (Milby, 1934; Insko and co-workers, 1934; Hammond, 1936; and others), have been shown to be conducive to this disorder. Several plant products including rice bran (Titus, 1931), wheat by-products (Lee, 1929; Graham and co-workers, 1934; Wilgus and co-workers, 1935; and Sherwood and Couch, 1936), oats, and barley (Branion, 1933; Wilgus and co-workers, 1935; .