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Year : 2017
Tome : 168
Volume : 1-3
Pages : 30-37
Title : Evaluation of prebiotic and probiotic in diets comprising rice bran on heat stressed broilers
Authors : S. SEIFI, R. KHOSHBAKHT, R. SAYRAFI, A. HASHEMI, A. GILANI, B. GOUDARZI, H. MEHDINEZHAD
Summary : An experiment has been conducted to evaluate the combination of a prebiotic and a probiotic on gut microflora and productive traits of broiler chickens during heat stress. A total 144 day-old Ross 308 male chicks were randomly divided into 3 treatments. Each treatment consisted 48 birds with four replicates of 12 birds each. The first treatment (positive control) contained a standard recommended diet with no probiotic or prebiotic. The second treatment (negative control) was a diluted diet (90% of recommended nutrient levels) including rice bran without probiotic or prebiotic. The third treatment was the basal diet similar to the second diet plus a prebiotic (A-Max Ultra) and a probiotic (Multibehsil). Concurrent use of the probiotic and the prebiotic significantly increased body weight gain of broilers as compared to the negative control (P<0.01). These additives caused to more feed intake even compared to positive control during 0-10 days. The feed conversion ratio (FCR) of chickens fed positive control and additives group was significantly improved as compared with negative control in starter phase. The FCR was not influenced by dietary treatments during grower phase. However, positive control had better FCR as compared to other treatments in finisher phase under heat stress. Populations of Lactobacilli, coliforms, and total aerobic bacteria in ileal digesta of broilers were not significantly influenced by dietary treatments. Dilution of diets caused to hypertrophy and more weight of heart and liver. The additives significantly diminished this negative impact on the liver. In conclusion, the prebiotic in concert with probiotic had profound impacts on productive traits and internal organs of heat stressed broiler.
Keywords : prebiotic, probiotic, diluted diets, Ross 308 chicks, heat stress
Correspondence : A. GILANI
Adress : Faculty of Veterinary Medicine, Amol University of Special Modern Technologies, Amol, IRAN. gilanipoultry@gmail.com
Link : pdf

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