An Abnormality of the Proventriculus and Gizzard of Chicks

NEWBERNE et al. (1956) reported that chicks, fed on purified diets, showed gross distension of the proventric-uli and adjacent areas. In the affected birds the area between the proventriculus and the gizzard was dilated and the mas-culature thinner than normal. O'Dell et al. (1959) also reported that a large propor-tion of chicks, fed a purified diet, devel-oped an enlarged proventriculus, with failure in growth and development of the gizzard. Although the gizzards were smaller in the affected birds, the mascula-ture appeared normal, but the lining of the gizzards was thicker than normal. The affected birds also had enlarged proven