Chemical composition of barley with different methods of preparation for feeding

Abstract

It is well known that the effectiveness of the use of feed products depends on the method of processing and preparation of feed for feeding. The purpose of the research was to study the chemical composition and nutritional value of barley grain before and after preparation for feeding in diff erent ways. The object of research was the grain of barley of naked barley varieties Nudum 95 and Granal 32 and fi lmy variety Chelyabinsk 99. The research was devoted to the study of the infl uence of diff erent methods of preparing barley for feeding on the chemical composition of the feed. The processing of barley grain in diff erent ways has had a signifi cant infl uence on its chemical composition. Germination of barley grains of the studied varieties led to an increase in the concentration of crude protein and crude fi ber in the dry matter compared with grain without processing. The amount of crude fat, nitrogen-free extractive substances and starch in sprouted grain has been decreased by 18 %, 11 and 15 %, respectively. When grain was extruded, the crude protein content of the fi lmy and naked varieties increased by 16 and 11 %, respectively, compared with grain without processing. There was a decrease in crude fi ber, crude fat and starch. The fl attening of the grain did not have a signifi cant eff ect on the nutrient content. Preparation of barley for feeding by a complex method (germination + extrusion) it contributed to the increase in raw protein in the feed compared to other methods. However, there was a decrease in the grain content of crude fat, nitrogen-free extractive substances and starch.