Four complete diets in grower type were used in the experiment: (1) cereal-soybean control diet, (2) cereal- -soybean diet containing 0.01% of sodium saccharinate, (3) cereal-soybean diet containing 15% of rapeseed meal and (4) diet which addition of rapeseed meal (15%) and sodium saccharinate (0.01%). Feed preference test was carried out on 16 (8 female and 8 barrows) individually kept (in flat-deck cages) young growing pigs (crosses of ♀ Polish Landrace x ♂ Duroc). The pigs were selected by the analogue method (on the basis of sex, body weight and litter of origin), and divided into four feeding groups. Each of them consisted one element in experiment by Latine Square method. Diets were fed to animals 4 time per day, at 8.00, 11.00, 14.00 and 17.00 h, by a single stimulus method. The animals had free access to one of experimental, peletted diet by 20 minutes in the time of each one feeding. Really feed intake time and the level of feed intake were controlled. It was not statistically stated, that addition of sodium saccharinate have an influence on diet palatability in young growing pigs feeding. However, there was confirmed for tendency to lower intake of diet containing 15% of rapeseed meal. During a whole 8-day feed preference test an average intake of diets per one pig in the time of one feeding it was: (1) 347, (2) 350, (3) 335 and (4) 351 g , respectively.

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