Inorganic Phosphorus and Perosis

INVESTIGATION of the cause of perosis, or slipped tendon, has raised many interesting questions in the field of poultry nutrition. Although several tenable answers have been proposed by the various workers, the problem as a whole has not been solved satisfactorily. Hunter and Funk (1930) reported a high incidence of slipped tendon among chicks fed diets containing relatively large quantities of meat and bone scrap or bone meal. Parkhurst and McMurray (1933) found that the occurrence of slipped tendon varied with the relative quantities of meat and bone scrap and bone meal fed. Payne, Hughes, and Leinhardt (1932) showed that a mineral mixture composed of chemically pure calcium phosphate and calcium carbonate produced the same deleterious effects as an equivalent amount of steamed bone meal. Titus (1932) concluded that rice bran contains a factor which is necessary for the normal development of bone in the case of the chicken. Milby . . .