NUTRITIVE VALUE OF AIR-CLASSIFIED RAPESEED FRACTIONS

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Abstract
Three samples of rapeseed, composed of high, medium, and low glucosinolate cultivars, were air-classified into various fractions and these fractions were subjected to chemical and biological evaluation. The dehulled fraction of the seed had higher protein and fat content and lower fiber content than the original seed. Digestible nitrogen (DN) and digestible energy (DE) content increased when the hull was removed. Net protein utilization was also higher in the dehulled seed than in the intact seed. No effects of glucosinolate level in the seed were noted with respect to DN or DE but feed consumption of chicks was increased on all tests when the low glucosinolate meal was fed.