تأثير پپتيدهاي كانولا، پروبيوتيك و پري بيوتيك بر عملكرد، فعاليت آنزيم‌هاي گوارشي و جمعيت برخي باكتري‌هاي هوازي انتهاي رودۀ باريك جوجه‌هاي گوشتي

Effect of canola peptides, antibiotic, probiotic and prebiotic on performance, digestive enzymes activity and some ileal aerobic bacteria in broiler chicks

The aim of the present experiment was to evaluate the effect of canola peptides (produced by enzymatic hydrolysis of canola meal), antibiotic, probioticand prebioticongrowth performance, digestive enzymes activity and some aerobic bacteriain broiler chicks. The experiment was conducted in a completely randomized design with 5 treatments 4 replicates of 10 male chicks each. Broiler chicks were fed on a diet with no feed additive (Control) or containing, 200 mg /kg antibiotic, 1 g /kg prebiotic, 400 mg/kg probiotic and 250 mg /kg canola peptides from day 1 to 42 of age. Results indicated that addition of canola peptides and probiotic to diet increased (P<0.05) body weight gain and decreased feed conversion ratio during days 11 to 28 d and 1 to-42 of age compared to the other groups (P<0.05). No significant differences observed among experimental treatments for feed intake. Digestive amylase, lipase and protease activity in chickens fed with 250 mg /kg canola peptides was greater than birds receiving other supplemented birds (P<0.05). Adding canola peptides and probiotic increased ileal Basiluss count compared to the other experimental treatments.It is Conclued that canola peptides increased body weight gain, decreased feed conversion ratio, increased intestinal amylase, lipase and protease activity, and ileal Basiluss count compared to the other experimental treatments.