Document Type : Research Paper
Former M. Sc. Student, University of Kurdistan, Sanandaj, 66177-15175, Kurdistan, Iran
Associate Professor, University of Kurdistan, Sanandaj, 66177-15175, Kurdistan, Iran
Professor, University of Kurdistan, Sanandaj, 66177-15175, Kurdistan, Iran
A total of 392 one-day male broiler chicks (Ross 308) were used to evaluate the effect of grain source (corn or Sardari, Zarrin and Azar-2 wheat cultivars) with or without a carbohydrase mixture enzyme an chicks performance from day 1 to day 49. A completely randomized design (seven treatments, four replicates and 14 chicks per replicate) was used. Results showed that birds fed diet contained Zarrin vs. Sardari or Azar-2 had higher body weightat 11, 25 and 42 days of ages. Birds fed Zarrin vs. Azar-2 diet had higher feed intake from 1 to 11 d. Bird’s fed diet with Sardari treatment showed lower serum glucose and total protein at 20d, lower carcass and pancreas relative weight (%) at 21 and 41d, respectively. Enzyme supplementation significantly improved bird’s body weight at 11, 25 and 42 d. Enzyme improved feed conversion ratio from 12 to 25 and 43 to 49 days of age. In addition, birds fed enzyme contained diet had significantly lower gizzard and pancreas relative weight (%) at 21d. In conclusion, the findings show that birds fed diet containing Zarrin cultivar or supplemented with enzyme mixture had higher performance.