| dc.description.abstract | This research was conducted to evaluate the effect of different types of feed additives (probiotics, prebiotics, postbiotics and their mixtures) on challenged or Noneee-challenged broilers with Clostridium perfringens or Salmonella Typhimurium, in starter or full-term chickens’ performance.
In the first study, the objective was to determine the effect of adding postbiotics (XPC® and XPC-Ultra®) and prebiotics (Safmannan® 125 and Safmannan® 250) to broiler chickens’ performance while challenging with Salmonella Typhimurium. The results of this study did not show significant enhancement in broilers’ performance at day 10. Safmannan® 125 showed significant reduction in Salmonella Typhimurium count on the plates compared to all other challenged groups.
In the second study, postbiotics (XPC® and XPC-Ultra®) and prebiotics (Safmannan® 250 and Safmannan® 500) were used to study their effects on broiler chickens’ performance while challenging with Clostridium perfringens. The results showed these additives groups did not retain the performances parameters to Noneee-challenged control-like at day 21, as they did not enhance performance significantly compared to challenged control group with no additives.
In the third study, the objective was to evaluate the effect of adding Phelio Microsaf® probiotic, Envera Goplus® probiotic, Safmannan® prebiotic, and combination of Envera Goplus® + Safmannan® on broiler performance while challenging with Clostridium perfringens. The results showed no significant differences in performance parameters between the additives groups and challenged control group at day 21 while challenging with Clostridium perfringens.
In the fourth study, the objective was to evaluate the effect Envera Goplus® probiotic, Actisaf® probiotic, Safmannan® prebiotic, and XPC® postbiotic on full term broiler chickens’ performance, fecal dry matter percentage, and intestinal morphology of the chickens. The results showed there were no significant enhancement of full term broilers’ performance at day 42 and no differences in fecal dry matter percentage or intestinal morphology between groups were found.
In the final study, the objective was to evaluate the effect of different concentrations of Safmannan® prebiotic + Bacillus probiotic on broilers’ performance while challenging with Clostridium perfringens. The results showed no significant enhancement in broilers’ performance while adding the combinations of Safmannan® and Bacillus.
In conclusion, adding the mentioned additives in these concentrations did not enhance broilers’ performance while challenging with or without pathogens. | |
