A Study of the Cell Content of the Blood of Normal Chickens, with Special Reference to Comparative Differential Leucocyte Counts Made with Supravital and Wright’s Staining Technics
Nele Twisselmann · Poultry Science · 1939
THIS study has been undertaken in an attempt to establish correct values for the various blood cell constituents of the normal chicken and to discover reasons for the conflicting results obtained by other workers. Blood examinations were made every two weeks for approximately seven months. Each examination consisted of total leucocyte and erythrocyte counts and of two differential leucocyte counts made from blood films stained by the supravital method and by Wright’s method, respectively. A careful autopsy was made of each chicken at the conclusion of the experiment to insure the absence of gross pathological lesions. Table 1 summarizes some of the data on blood counts of the chicken that have appeared in the literature. This shows the very conflicting findings, particularly with respect to the proportions of the different types of leucocytes. Some workers have failed to observe the presence of certain types of cells; others have classified the . . .