فهرست مطالب seyyed babak asadi

This study was conducted to investigate the efficiency of dietary inclusion of ASRI1 and ASRI2 commercial toxin binders and probiotic on performance, immunity, and intestinal microbial population of broiler chickens fed with aflatoxin-contaminated diets. A total number of 420 1-d-old broiler chicks with initial weight of 42±3, were assigned to 7 treatments with 5 replications (n=12). Experimental treatments included 1) non-aflatoxin contaminated diets (NC), 2) aflatoxin-contaminated diet (PC), 3) PC diet containing probiotic, 4) PC diet containing ASRI1 toxin binder, 5) PC diet containing ASRI2 toxin binder, 6) PC diet containing probiotic+ASRI1 toxin binder, and 7) PC diet containing probiotic+ASRI2 toxin binder. Performance, absorption index, intestinal microbial population, immunity index and survivability percentage were recorded and used as indexes for the comparison of the treatments. Multi-index decision management method was used to select the best treatment and decision about probiotic and toxin binder use. Based on the scoring obtained by this method, treatments of 1, 7, 6, 5, 3, 4 and 2 obtained the scores of 0.6264, 0.55674, 0.5118, 0.4171, 0.22244 and 0.0221, respectively. Based on Multi-index decision management method method, weight gain and production index had most role and the best response was observed in broiler chicks fed with probiotic and toxin binder (ASRI2). Therefore, a combination of probiotic and toxin binder (ASRI2) is recommended as a strategy for improving productive and performance traits of broiler chicks infected with aflatoxin

This study was conducted to investigate the effects of anti-stress feed additive containing probiotic Protexin®, vitamin C and betaine in three commercial broiler strains on immune responses, some blood parameters and oxidative stability of breast muscle under heat stress conditions. A total of 720 one-day-old broiler chicks were used in a completely randomized design as a 2×3 factorial arrangement consisting 2 levels of additive (with and without) and three broiler strains (Arbor Acres, Ross 308 and Cobb 500) with 6 treatments, 4 replicates and 30 birds in each replicate. The birds were exposed to heat stress (37 °C) for 8 hours daily from 22 to 42 days of age. In addition of performance parameters, humoral immune response was measured by intravenous administration of 5% sheep red blood cell (SRBC) suspension and primary and secondary antibody titers were determined. At 42 day of age, blood samples were collected to measure blood serum parameters including total protein, cholesterol, triglyceride, HDL and LDL. The heterophile to lymphocyte ratio and also glutathione peroxidase and super oxide dismutase enzyme activities were evaluated at 42 day of age. Among the evaluated parameters, only LDL concentration was affected by experimental strains (p < 0.05) and the minimum serum LDL concentration was observed in Arbor Acres strain. Generally, the strain and feed additive used in this experiment had no significant effect on immune response and breast muscle oxidative stability of heat-stressed broilers.

The aim of current research was to investigate the efficiency of dietary addition of ASRI1® and ASRI2® toxin binders and probiotic on performance, Aflatoxin concentrations of liver and muscle and intestinal microbial population of broiler chicks fed Aflatoxin-contaminated diets. A total of 420 one-day old Ross 308 broiler chicks were assigned in a completely randomized design to 7 treatments with 5 replications of 12 birds in each. The experimental treatments 1) non Aflatoxin contaminated diets or negative control (NC), 2) Aflatoxin-contaminated diets or positive control (PC), 3) PC diets containing ASRI1® toxin binder, 4) PC diet containing ASRI2® toxin binder, 5) PC diet containing probiotic, 6) PC diet containing probiotic+ ASRI1® toxin binder and 7) PC diet containing probiotic+ ASRI2® toxin binder. Performance was evaluated in periodical, Aflatoxin concentrations of liver and muscle at 28 and 42 days of age and intestinal microbial population at 42 days. The results showed body weight was significantly lower (p < 0.05) and feed conversion ratio was significantly higher (p < 0.05) in NC group when compared with PC group in grower and finisher periods. The harmful microbial population and Aflatoxin concentrations of liver and muscle were significantly higher (p < 0.01) in PC group in comparison to NC group. However, the dietary addition of commercial toxin binders and probiotic especially their combination, significantly alleviated (p < 0.05) Aflatoxin effects on performance, Aflatoxin concentrations of liver and muscle and intestinal microbial population.