Chemical composition of spring rapeseed grown in the Vologda oblast and its products

Rapeseed (rape) is a traditional oilseed crop, which is grown not only in America, Asia and Australia, but also in Russia. Rapeseed has useful properties and is used in cooking, medicine, cosmetology and even metallurgy. As a feeding crop, rapeseed is a source of providing farm animals with protein. Rapeseed cakes obtained from the extraction of rapeseed seeds are used as protein replenishment in animal husbandry. However, in the Vologda Oblast, this culture began to be grown relatively recently. In this regard, the question arises about the preservation of its useful features and chemical composition when grown in the conditions of the European North of Russia. The purpose of the research is to evaluate the quality indicators of spring rape seeds grown in the Vologda Oblast and its processed products. The novelty of the study lies in assessing the safety of the chemical composition of rapeseed grown in the Vologda Oblast and its processed products, as well as in comparing the results with the accepted regulatory values. The research object is feed received for analysis at the Laboratory of Chemical Analysis of the Northwestern Dairy Farming and Grassland Management Research Institute - separate subdivision of VolRC RAS. The content of crude protein in rape seeds in 2021 exceeded the 2020 indicators by 5.47%, in terms of the concentration of volumetric energy - by 19.56%, in terms of crude fat there is a decrease of 7.19%. The content of crude protein in the seed cake increased by 0.38%, in meal - by 0.72%, crude fiber it is decreased by 0.87 and 0.50%, respectively. The studies were conducted in 2020-2021 in laboratory conditions in accordance with methodological recommendations. Zooanalysis was carried out according to the all-Union State Standard 13496.4-2019. Raw fiber Ganneberg - Shtoman method; all-Union State Standard 13496.15-2016; all-Union State Standard 31640-2012; all-Union State Standard 32933-2014 (ISO 5984:2002). The nutritional value was calculated according to the all-Union State Standard 11048-95. Interstate standard. Rapeseed cake; all-Union State Standard 30257-95. Interstate standard. Toasted rapeseed meal.