The microstructure of the broiler feather differs in each chemical process. In the present work an increase in the hydration, brightness and softness was observed in the different types of hair after the treatment with 10% of keratin peptides obtained by the enzymatic hydrolysis process. The composition of the BFC products was dominated by the compounds of SO3, SiO2, and Al2O3. If you have a supply of wet feathers you want to process into higher-value feed meal, the Haarslev Horizontal Hydrolyzer is the most advanced, easy-to-operate way to do it, by injecting both direct and indirect steam into a heavily compressed plug of feathers. Given the above, at this stage of work, parameters of enzymatic hydrolysis of feather-and-down raw materials in the Acid hydrolysis [two parallel hydrolysis (50 g milled feathers and 75 mL of 6 N H 2 SO 4 or HCl) at 70 °C for 24 h, then 130 °C for 4 h; after neutralization, the two hydrolysates were mixed] Addition of feather hydrolysate to medium enhanced the production of … In the first stage, feathers were mixed with a 0.1 or 0.3% KOH water solution in a 1 : 50 ratio and were incubated at 70°C for 24 h. The present study dealt with the processing of poultry feathers through a two-stage alkaline-enzymatic hydrolysis. The selection and optimization of process parameters of alkaline hydrolysis of waste feathers was the aim of the study. Size varies between species. Method of chemical hydrolysis of feathers proposed in the project reduces the temperature, pressure and shortens the time of process. Moreover, it The feather is composed of keratin, a protein that is only digestible if previously hydrolyzed with moisture, pressure, and temperature. Feathers and hair contain a protein called keratin, which is edible only after a hydrolysis process. Hydrolysis of the feather carried out as reported by earlier investigators ( Akpor et al., 2018a). For hydrolysis, approximately 400 g of dried chicken feathers were placed in 10-l plastic container, after which 2000 ml 1 M NaOH was added. Feather hydrolysis. The feather-NaOH mixture was stirred vigorously and left to stand for 10 h. With the Continuous Hydrolysis System, steam is injected directly into the feathers, which subsequently go through a drying process. An application of the chemical hydrolysis process to the BFC increases the value of the water and the ash content, but it decreases the fat and fiber content. In addition, the most important parameter of the fermented feather-and-down raw material is fineness degree (particle size). The hydrolysis system consists in breaking the peptide links of different amino acids which make up the protein, which is possible when the raw material is subjected to pressure using water vapor at a temperature between 120°C and 180°C. process of enzymatic hydrolysis of feather-and-down raw material require clarification. Introduction.