NDLI: Evaluation of Bacillus species as potential candidates for direct-fed microbials in commercial poultry

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Evaluation of Bacillus species as potential candidates for direct-fed microbials in commercial poultry

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Evaluation of Bacillus species as potential candidates for direct-fed microbials in commercial poultry

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Shivaramaiah, S. Pumford, N. R. Morgan, M. J. Wolfenden, R. E. Wolfenden, A. D. Torres-Rodríguez, A. Hargis, B. M. Téllez, G.
Description	Country affiliation: United States Author Affiliation: Shivaramaiah S ( Department of Poultry Science, University of Arkansas, Fayetteville, AR, USA.)
Abstract	Increasing sociopolitical concerns with antibiotic use have led to investigations of potential alternatives for food safety and growth promotion. Direct-fed microbials (DFM) including spore-based probiotics are amenable to feed inclusion and are extremely stable. We isolated several Bacillus spp. from environmental and poultry sources and tested them for their ability to reduce Salmonella in vitro. In a preliminary in vivo trial, day-of-hatch chicks and poults were randomly assigned to the following treatments (24 birds/treatment): control and one of 8 DFM candidates at $10^{6}$ spores/g of feed. Chicks and poults were tagged, weighed, and orally challenged with Salmonella Typhimurium (ST). Body weight gain and ST recovery were measured 11 d posthatch. Total percentages of ST-positive crop and ceca were significantly lower (P < 0.05) in at least 3 DFM candidates compared with control. Additionally, beneficial effects on BW gain were observed in at least 5 DFM candidates (P < 0.05) compared with control. In a second study, birds treated with NP122 (identified as Bacillus subtilis) had significantly lower (P < 0.05) cecal ST than control and benefitted BW gain irrespective of the presence or absence of a Salmonella challenge. In conclusion, NP122 markedly reduced ST recovery and increased BW gain in both chicks and poults. This provides preliminary evidence that this isolate may have potential use as a DFM in poultry.
File Format	HTM / HTML
ISSN	00325791
e-ISSN	15253171
Journal	Poultry Science
Issue Number	7
Volume Number	90
Language	English
Publisher	Oxford University Press
Publisher Date	2011-07-01
Publisher Place	Great Britain (UK)
Access Restriction	Open
Subject Keyword	Discipline Veterinary Medicine Bacillus Subtilis Gastrointestinal Diseases Veterinary Poultry Diseases Microbiology Probiotics Administration & Dosage Salmonella Infections, Animal Salmonella Typhimurium Growth & Development Turkeys Animals Body Weight Physiology Cecum Colony Count, Microbial Prevention & Control
Content Type	Text
Resource Type	Article
Subject	Medicine Animal Science and Zoology

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Evaluation of selected direct-fed microbial candidates on live performance and Salmonella reduction in commercial turkey brooding houses.

Bacillus subtilis (DSM17299) significantly reduces Salmonella in broilers.

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Effects of a direct-fed microbial (primalac) on turkey poult performance and susceptibility to oral Salmonella challenge.

Assessment of cecal microbiota, integron occurrence, fermentation responses, and Salmonella frequency in conventionally raised broilers fed a commercial yeast-based prebiotic compound.

Evaluation of disinfectants commonly used by the commercial poultry industry under simulated field conditions.

Evaluation and Selection of Bacillus Species Based on Enzyme Production, Antimicrobial Activity, and Biofilm Synthesis as Direct-Fed Microbial Candidates for Poultry

Evaluation of Bacillus species as potential candidates for direct-fed microbials in commercial poultry

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