The new low glucosinolate rapeseeds : chemical composition and nutritive value of rapeseed meals and whole seeds for growing-finishing pig

Abstract

The nutritive value (Energy and protein value) of 30 samples of rapeseed oilmeals and whole seeds of high (HG) and low giucosinolate (LG) content was determined by direct measurement of the digestibility in growing-finishing pigs. The results obtained are reported for each type of meal (solvent extracted, expeller, normal and hulled) and for the treated seeds. They were compared to data available in the literature and enabled a precise determination of the nutritive value of rapeseed derivate products and particularly of the new low glucosinolate normal and hulled oilmeals for the pig. The glucosinolate content of rapeseed seeds (HG) and (LG), and derivate oil meals are indicated. Various technological treatments are evaluated with the aim of improving the nutritional value of rapeseed meals and seeds -(LG). These data show the possible range of progress obtained with the use of low glucosinolate (LG) hulled rapeseed meal whose nutritive value and possibility of utilization are markedly increased for the growing- finishing pig.