1Department of Animal Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
2Department of Animal Science, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
Receive Date: 25 January 2014,
Revise Date: 04 April 2014,
Accept Date: 30 April 2014
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<0.05). Diets supplemented with BCS increased glucose and alanine aminotransferase (ALT) compared with control group as significantly (P<0.05). Also, plasma aspartate aminotransferase (AST) andlow-density lipoprotein (LDL) from broilers fed diets supplemented with5 and 10 g/kg BCS was lower than control (P<0.05). Feed conversion ratio of bird fed to 5 g/kg BCS in 42 days old was the lowest amount (P<0.05). The highest and the lowest liver weight percent were also depending to 15 g/kg BCS and control respectively. Overall, this research showed that BCS supplemented at the varying levels did not have any negative or positive influences on the growth performance of broiler chickens, although it affected some of the blood parameters.
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