Hematocrit of Chickens; with Special Reference to Visceral Lymphomatosis
Koji Sato · Poultry Science · 1960
RELATIVE volumes of blood cells and plasma have been determined after centrifugation in a hematocrit tube. In such a separation of cells and plasma, the platelets (thrombocytes) and leucocytes, being less dense than the erythrocytes, appear as a separate layer above the erythrocytes. The color of the separate layer is reddish gray in human and chickens. Wintrobe (1956) stated that thickness of the reddish gray layer which is a mixture of platelets (thrombocytes) and leucocytes (M), increase in cases of human leukemia, and is a useful guide to the diagnosis of leukemia. As the number of leucocytes in leukemic patients increases, the increase in the relative volume of M would be readily conceivable. The prominent increase in M was found in chicken granuloblastosis (Jungherr, 1952). The present paper is concerned with the observations of chicken hematocrit. An increase in the relative volume of M was observed in cases of visceral …