THE EFFECTIVE METHOD OF INCREASING THE NUTRITIONAL VALUE OF OAT AND BARLEY GRAIN
Introduction. The aim of this study was to determine the nutritive value of products that were obtained as a result of oat and barley grain treatment on a pilot device of the company «Open world». The main function of this pilot set is removing of grain hulls with high content of cellulose. Grain was fractionated after crushing for effective using in the cattle feeding. Materials and methods. Barley grain of 2016 yield and oat grain of 2015 and 2016 yield was used for industrial trials. The obtained grain fractions were analyzed for determination of basic nutrients content in accordance to standardized procedures. Starch, neutral detergent fiber, lignin content and metabolizable energy were determined in the samples additionally. Results. Grain of oat and barley was crushed and separated by air on the hummer mill with obtaining the light and heavy fractions. These fractions are differed on the degree of milling as well as nutrients content. At the next step the light fraction was sifted and husking bran and hulls were obtained as the end-products. Grits, as the component of heavy fraction, is characterized by increased crude protein, fat, nitrogen-free substances, high starch content and energy nutritiousness (12.5-12.7 MJ per 1 kg of natural feed). We recommend using grits in feeding of lactic cows during ration. Husking bran is differed by less nutritiousness in comparison to grits (11.4-11.6 MJ), that why it recommended for using in the diets of dry cows and young animals. Discussion. It is better to remove the separated filmy husks after grain milling, because of poor energy nutritiousness (7.1-7.5 MJ) and low nutrient digestibility due of high content of cellulose and lignin. Conclusion. The study has shown that pilot device, which was developed by specialists of company «Open world», provides crushing of oat and barley grain with removing of 65-85 percents of grain husks. As a result the value products - grits and husking bran - were obtained for using in the diets of lactating cows and young animals.