From the numerous lists, cocoa waste (husk, cocoa shell) is unconventional for Russian production. The value of the product lies in the content of pectin (10 %), amino acids, protein (27 %), fat (1,5-8,5 %) and dietary fi ber. It is obvious to search for alternative methods in the preparation of this raw material for feeding through the use of chemical and mechanical processing. The purpose of the research was a comparative assessment of the methods of preparation and use of cocoa production waste as part of the diet for the metabolism and productivity of broiler chickens. The experimental part of the work included laboratory experiments and scientifi c and economic experiments, as well as a production check, which was carried out in CJSC “Poultry Farm Orenburg” of the Orenburg region. In the cocoa husk treated with alkali in the amount of 45 g/kg, there was a decrease in the fi ber content from 21,5 to 10,5 % against the background of an increase in the amount of protein from 16,2 to 18,7 % and nitrogen-free extractive substances from 38,6 to 48,5 %, compared with the initial product. The processing did not have a signifi cant eff ect on the content of ash, crude fat and organic matter. Extrusion of cocoa husks treated with alkali had a beneficial effect on the availability of nutrients for digestive enzymes. At the same time, extrusion of processed raw materials with sodium hydroxide in an amount of 45 g/kg on average increased the availability of nutrients by 7–12 abs.%, the content of metabolic energy up to 10 %, compared with chemical processing of cocoa husks. As a result of production tests, the effectiveness of the use of cocoa husks (NaOH treatment 45 g/kg + extrusion) was established when replacing 5,0 % of the grain part in the diet of broiler chickens, which is confirmed by economic calculations and indicators of profitability of production.
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