Study on the Nutritional Composition of Oil Cakes of Different Released and Line Cultivars of Mustard and Rapeseed (Brassica spp.)

Rape seed and mustard are common names used for different species of the family Cruciferae (Bracicaceae). Rape seed includes Brassica compestris and B. napus. Mustard specifically refers to Brassica juncea and Eruca sativa. There are considerable differences in agronomic characteristics, yield, and fatty acid (FA) composition of seed oil between species and between varieties (Bauer, 2018). Mustard and rapeseed are major oilseed crops and the leading source of edible oil occupied the third most important position among the oilseed crop in the world and World area harvested under mustard and rapeseed is 38,509,853 MT and production is 75,711,806 MT (Anonymous, 2019). In Bangladesh, Brassica rapa is the main oil yielding species. Brassica rapa L. occupies the first position in respect of area and production (Naznin et al., 2018). About 787025 acres of land was under rape and mustard cultivation. The production rate of the seed was about 68 MT, and national average yield was 368987 MT in this country (Anonymous, 2019). Brassica is considered to be the most important source of vegetable and protein Art ic le History RECEIVED in 28th July 2020 RECEIVED in revised form 03rd October 2020 ACCEPTED in final form 15th October 2020 Mustard, rapeseed, oil cake, nutritional composition, gross energy