Effect of oak acorn and dietary methionine level on performance, some organs weight and tibia characteristics in broiler chicken

Document Type : Research Paper


1 M. Sc. Student, Department of Animal Science, Faculty of Agriculture, Yasouj University, Iran

2 Assistant Professor, Department of Animal Science, Faculty of Agriculture, Yasouj University, Iran


The effects of replacing 0, 15 and 20 of corn by percent oak acorn (OA), in diets contacting recommended and twice recommended level of methionine by NRC (1994) on performance of broilers were investigated. 528 one-day-old Cobb 500 broiler chicks in a 2×3 factorial arrangement based on completely randomized design with four replicates of 22 chicks were used. Chicks fed with diets containing 15 and 20 percent OA had lower body weight gain and higher feed conversion ratio compared to those fed with diet without OA, in all experimental periods (P<0.05). The increasing dietary methionine level as Twice as NRC (1994) recommendation reduced feed intake and body weight gain in finisher and overall experimental periods significantly (P<0.05). No significant interaction was observed between dietary OA utilization and methionine for performance parameters. The 20 percent dietary OA utilization had undesirable effect on some tibia characteristics (P<0.05). Generally, the substitution of 15 and 20 percent of dietary corn with OA resulted in reduction in broilers performance and increasing the dietary level of methionine could not prevent this situation.


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