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Journal of Biological Sciences
Year: 2008  |  Volume: 8  |  Issue: 4  |  Page No.: 818 - 821

Effects of Diet Supplementation of Aspergillus Meal Prebiotic (Fermacto®) on Efficiency, Serum Lipids and Immunity Responses of Broiler Chickens

A.H. Piray and H. Kermanshahi    

Abstract: This experiment was conducted to investigate the effects of Aspergillus meal prebiotic (Fermacto) on production performance, serum lipids and immune responses in broiler chickens. One hundred and forty four day-old Ross male broiler chicks were randomly assigned to three dietary treatments: a basal diet (control), a basal diet with 0.15% Fermacto and basal diet with 0.30% Fermacto. The production parameters, including Feed Intake (FI), Body Weight Gain (BWG) and Feed to Gain Ratio (FCR) were monitored weekly serum lipids, antibody productions and antibody titer against Infectious Bursal Virus Disease (IBVD) were measured at the end of a 6 week trial. At 28 days of age, four birds from each replicate of treatments were injected intrabreast with 0.2 mL of 5% Sheep Red Blood Cell (SRBC). The supplementation of 0.30% Fermacto in broiler diets improved the body weight gain from 21-28 and 35-42 days of age (p<0.05). The BWG was also significantly higher (p<0.01) in Fermacto-fed broilers than that of control treatment at 28-35 days of age, overall growing (21-42 day) and rearing (0-42 day) periods. FI was significantly (p<0.05) higher for 0.15% Fermacto-fed broilers than that of control broilers at 14-21 and 0-21 days of age. FI was significantly greater (p<0.05) in 0.30% Fermacto-fed broilers compared to control broilers at 35-42 days of age, during growing (21-42 day and rearing (0-42 day) periods. From 28-35 days of age, a lower FCR (p<0.05) was observed with 0.15% Fermacto when compared with control group. There were also no significant differences in total cholesterol, high density lipoprotein cholesterol (HDL-cholesterol), low density lipoprotein cholesterol (LDL-cholesterol) and triglycerides among treatments. Dietary Fermacto did not affect antibody titer against IBVD. The serum IgG, IgA and IgM production significantly (p<0.01) decreased in Fermacto-fed broilers as compared to control broilers.

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