Journal of Food, Agriculture and Environment

Vol 12, Issue 2,2014
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Effects of direct-fed probiotics on broiler performance and susceptibility to oral Salmonella enterica challenge


Alaeldein M. Abudabos 1 *, Hany M. Yehia 2, Masoud N. Alotybi 1, Abdul Rahman Garelnabi 1, Abdullah H. Alyemni 3

Recieved Date: 2014-01-20, Accepted Date: 2014-03-30


The present experiment examined the influence of Bacillus subtilis PB6 and Bacillus cereus var. toyoi based probiotics, as an alternative to in-feed antibiotic, neoxyval, on broilers’ performance during pre- and post-challenge with Salmonella enterica subsp. typhimurium. Ten cages of birds received one of the following treatments: T1 = positive control, unmedicated, unchallenged (+CONT); T2 = negative control, unmedicated, challenged (-CONT); T3 = medicated with antibiotic (neoxyval), challenged (NEOX); T4 = medicated with probiotic Toyocerin®, challenged (TOYO); and T5 = medicated with probiotic CloSTATTM, challenged (CLOS). Chicks in treatments T2 to T5 were challenged with (3 × 109 CFU/ml) of Salmonella enterica subsp. typhimurium on day 16. The results revealed that unchallenged bird (CONT) consumed more feed as compared to other treatments (P < 0.001). Furthermore, birds, which had received NEOX, CLOS and TOYO converted feed more efficiently as compared to those which had received –CONT, which was an indication that both probiotics were able to restore the performance equally to the antibiotic. Both probiotics were efficacious at reducing the Salmonella in ileum, however, TOYO was more efficacious than CLOS in reducing the Salmonella in the cecum. Villus height was influenced by treatment (P < 0.001), it was significantly higher for birds which had received CONT but not different from those which had received CLOS. In summary, both probiotics, which were used in this trial, reduced the Salmonella count and improved the morphology of the ileum as a result of the cumulative FCR improved. The results from this study suggested that both probiotics under the condition of this trial had a positive influence on the performance of broiler chickens and could serve as an alternative to AGPs in broilers diet.


Bacillus subtilis PB6, Bacillus cereus var. toyoi, probiotic, performance, Salmonella enterica

Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 2
Category: Food and Health
Pages: 30-34

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