Document Detail


Transmission of Salmonella to broilers by contaminated larval and adult lesser mealworms, Alphitobius diaperinus (Coleoptera: Tenebrionidae).
MedLine Citation:
PMID:  19096055     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The ability of the lesser mealworm, Alphitobius diaperinus (Panzer), commonly known as the darkling beetle, to transmit marker Salmonella Typhimurium to day-of-hatch broiler chicks was evaluated, as well as the spread to nonchallenged pen mates. In trial 1, day-of-hatch chicks were orally gavaged with 4 larval or 4 adult beetles that had been exposed to marker Salmonella-inoculated feed for 72 h. In addition, chicks were gavaged with the marker Salmonella in saline solution. These chicks were then placed into pens to serve as challenged broilers. In trial 2, all pens received 2 challenged chicks that were gavaged with larvae or beetles that had been exposed to marker Salmonella-inoculated feed for 24 h and then removed from the inoculated feed for a period of 7 d. At 3 wk of age, cecal samples from the marker Salmonella-challenged broilers and from 5 pen mates in trial 1, or 10 pen mates in trial 2, were evaluated for the presence of the marker Salmonella in their ceca, and at 6 wk of age, all remaining pen mates were sampled. To monitor the presence of the marker Salmonella within pens, stepped-on drag swab litter samples were taken weekly. For the Salmonella-saline pens, 29 to 33% of the broilers that had been challenged and 10 to 55% of the pen mates were positive at 3 wk of age, and only 2 to 6% had positive ceca at 6 wk. For the pens challenged with adult beetles, 0 to 57% of the challenged broilers and 20 to 40% of the pen mates had positive ceca at 3 wk, and 4 to 7% were positive at 6 wk. The pens challenged with larvae had the greatest percentage of marker Salmonella-positive broilers; 25 to 33% of the challenged broilers and 45 to 58% of pen mates were positive at 3 wk, and 11 to 27% were positive at 6 wk. These results demonstrated that ingestion of larval or adult beetles contaminated with a marker Salmonella could be a significant vector for transmission to broilers.
Authors:
A J Roche; N A Cox; L J Richardson; R J Buhr; J A Cason; B D Fairchild; N C Hinkle
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Poultry science     Volume:  88     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2008-12-19     Completed Date:  2009-03-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  44-8     Citation Subset:  IM    
Affiliation:
Department of Entomology, University of Georgia, Athens, GA 30602, USA.
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MeSH Terms
Descriptor/Qualifier:
Animal Feed
Animals
Beetles / microbiology*
Cecum
Chickens*
Larva / microbiology
Poultry Diseases / epidemiology,  microbiology,  transmission*
Salmonella Infections, Animal / transmission*
Salmonella typhimurium*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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