Effect of the mass rate of germinated rape seeds in mixture on the nutritional value of extrudates

The aim of the study is to determine the effect of the mass fraction of germinated rapeseed in the mixture on the nutritional value of extruded feed. Studies on the germination of rapeseed Trapper B4 2018 with their subsequent extrusion in a mixture with wheat grain were carried out at the Engineering Center of the Krasnoyarsk State Agrarian University. Raw materials for obtaining mixtures and seedlings, sprouted rapeseed and finished extrudates were analyzed for the content of basic nutrients and the content of heavy metals at the Research and Testing Center of the Krasnoyarsk State Agrarian University. The number of sprouted rapeseed was 10; 15; 20 and 25 % of the total mass of the mixture. With an increase in the mass fraction of germinated rapeseeds in the mixture in the resulting extrudates, the content of crude protein, crude fiber, sugar, starch and carotene increases, while the amount of nitrogen-free extractives decreases. The calcium content in the finished feed increases by 271.3 mg/kg, phosphorus - by 36.1 %. The extrudate obtained from a mixture containing 25% of sprouted rapeseed, the maximum content of protein (16.18 %), fiber (10.15 %), sugar (5.05 %) and calcium (823.97 mg/kg) was noted. The highest starch content (41.06 %) was observed in extrudates obtained from mixtures containing 20 % sprouted rapeseed. Mixtures with 15 and 10 % of sprouted rapeseed were distinguished by a high content of phosphorus (0.01 mg/kg) and NFE (72.2 %), respectively. The amount of crude fat and carotene in the extrudates increased with an increase in the proportion of sprouted rapeseed in the mixture. The highest content of exchange energy in the samples was observed when 25 % sprouted rape was used in the mixture (12.97 MJ/kg). The ecological and energy quality index of extrudates decreases with an increase in the proportion of seedlings in the mixture.