[Determination of the presence of pepsin in the crop of the chicken (white Leghorn)].

The presence of pepsin in the crop of chicken (white Leghorn) with fistula cannula is determined in this research. Methodological conditions and importance of such a determination from a physiological digestion point of view are described. In addition, the effect of histamine on different secretory parameters (volume, total acidity and proteolytic activity) of the crop is analysed. The results obtained indicate that histamine correlatively increases these secretory parameters.