Black Cumin ( Nigella sativa) Supplementation in the Diet of Broilers Influences Liver Weight and Its Enzymes

An experiment was conducted to evaluate the effects of supplementing black cumin (Nigella sativa) seeds (BCS) in diet on performance, liver weight and enzymes of broilers.The experiment was conducted as a randomized complete block design. Two hundred forty day-old unsexed broiler chicks (Cobb 500) were divided into four groups and assigned to four feeding treatments, with four replicates of 15 birds each. Group 1 was considered as a control group where they are given unsupplemented diets. Group 2, 3 and 4 were given diets supplemented with 5, 10 and 15 g/kg of BCS respectively.Birds fed diets not supplemented withBCS showed no significant effect (P>0.05) on live weight, feed consumption and organs weight, except to liver followed by 0 g/kg treatment (P