The composition of dried nutrient broth, prepared on the basis of the fermentative hydrolysate of waste chick embryos, has been studied with the use of physicochemical analytical methods. The parameters of total and amino nitrogen, the content of amino acids, peptides, lipids, carbohydrates and microelements have been determined. The qualitative analysis of the peptide composition of the broth has been made. The heterogeneity of peptides with respect to their molecular weights (200--15,000 D and over) has been noted. As regards its physico-chemical composition, the broth is a valid medium, suitable for the cultivation of a wide spectrum of microorganisms.