USE OF RAPESEED MEAL AND LECITHIN SLOPS IN DIETS FOR BROILER CHICKS

Three comparative feeding trials were conducted on cockerels of ROSS h ybrid: The effect of two levels of rapeseed meal (RM) enriched with 1% of lecithin slops (LS) and of enzymic concentrate ALLZYME VEGPRO (AVC ) was studied as exerted on broiler weight and feed consumption. The e ffect of the higher RMLS level (a(2)) on broiler weight was positive a nd significant (P 0.05) at 21 days of age (+ 6.45%). No statistically significant differences between the experimental groups were determine d at 35 and 42 days of age. The enzymic concentrate AVC did not have a ny statistically significant effect on broiler weight in the separate periods of observation. Feed consumption per 1 kg of weight gain was s ignificantly (P < 0.05) higher in feed mixtures BR2 containing 12.12% RMLS (a(2)) (+5.04%). Total feed consumption per 1 kg of weight gain w as higher on average by 2.5% in groups (a(2) + a(3)) receiving feeds w ith RMLS. The effect of enzymic concentrate AVC on total feed consumpt ion per I kg of weight gain was not statistically significant. The sec ond trial was focused on the effect of two RM levels and AVC on broile r weight. The weight of broilers receiving feeds with different RM lev els was comparable with the weight of broilers in control group (a(0)) The final broiler weight was not influenced by significant difference s (P < 0.05) between the weight of broilers a(1) and a(2). The groups of broilers on diets with enzymic concentrate AVC (b(1)) had insignifi cantly higher weights (+2.13%) at the end of trial than did the broile rs receiving feeds without any concentrate (b(0)). The effect of RM ap plication to feed mixtures BR1 and BR2 at 6% (a(1)) and 12% (a(2)) lev els on feed consumption per 1 kg of weight gain was highly significant ly (P < 0.01) negative in comparison with control (a(0)). The enzymic concentrate AVC did not influence the total average feed consumption p er 1 kg of weight gain. The third trial was conducted to determine the effect of experimental levels of lecithin slops and the effect of enz ymic concentrate AVC on broiler weight. The effect of 1% LS applicatio n to RM on broiler weight was positive in all experimental periods. Th e broilers of group (a(2)) had significantly (P < 0.1) higher weight a t 35 days of age than the broilers of group (a(0)). The cockerels of g roup (a(2)) had by 5.04% higher weight at 42 days of age at the end of trial than the individuals of group (a(0)). The cockerels which recei ved diets with AVC concentrate showed by 3.02% higher average weight a t 42 days of age than group (a(0)). Lecithin slops reduced feed consum ption per 1 kg of weight gain significantly (P < 0.05) to highly signi ficantly (P < 0.01). Slightly negative effects of LS use on feed consu mption were determined in feed mixtures BR1 only. Total feed consumpti on per 1 kg of weight gain was lowest in group (a(2)), which received RM with LS at a 1% concentration. The application of enzymic concentra te AVC resulted in a significant (P < 0.1) positive decrease in the co nsumption of feed mixture BR2 per 1 kg of weight gain. There were no d ifferences in total feed consumption per 1 kg of weight gain, and the values were in the range of natural variability.