Document Detail

Different feed withdrawal times before slaughter influence caecal fermentation and faecal Salmonella shedding in pigs.
MedLine Citation:
PMID:  18805721     Owner:  NLM     Status:  MEDLINE    
The effects of different pre-slaughter feed withdrawal times (FWT) on the gastrointestinal tract (GIT) weight and the gut environment of pigs and Salmonella shedding were investigated. Trial 1 evaluated the effects under experimental conditions (feed withdrawal for 18, 30 and 36 h) and trial 2 under commercial conditions (15 and 30 h). In trial 1, the GIT weight tended to decrease (P=0.07), the caecal pH increased (P<0.0001), short-chain fatty acids (SCFA) decreased (P<0.001) and percentage of branched-chain fatty acids (BCFA) increased as FWT increased. Similar results were observed in trial 2, but Enterobacteriaceae numbers and Salmonella positive pigs tended to increase whereas lactobacilli decreased (P<0.0005) as FWT increased. The increase in FWT involved changes in the gut microbial ecosystem that could be associated with the trend of increased caecal Enterobacteriaceae and Salmonella in faeces, and may represent a higher risk of carcass contamination in cases of laceration of viscera.
Sandra Mart??n-Pel??ez; Bibiana Peralta; Eva Creus; Antonio Dalmau; Antonio Velarde; Jose F P??rez; Enric Mateu; Susana M Mart??n-Or??e
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-09-20
Journal Detail:
Title:  Veterinary journal (London, England : 1997)     Volume:  182     ISSN:  1532-2971     ISO Abbreviation:  Vet. J.     Publication Date:  2009 Dec 
Date Detail:
Created Date:  2009-11-16     Completed Date:  2010-01-25     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706281     Medline TA:  Vet J     Country:  England    
Other Details:
Languages:  eng     Pagination:  469-73     Citation Subset:  IM    
Animal Nutrition, Management and Welfare Research Group, Departament de Ci??ncia Animal i dels Aliments, Universitat Aut??noma de Barcelona, 08193 Bellaterra, Spain.
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MeSH Terms
Cecum / microbiology*
Colony Count, Microbial
Enterobacteriaceae / growth & development*
Enterobacteriaceae Infections / microbiology,  transmission,  veterinary
Fatty Acids, Volatile / analysis
Feces / microbiology
Food Contamination / prevention & control
Food Deprivation / physiology*
Hydrogen-Ion Concentration
Organ Size
Salmonella / growth & development*
Salmonella Infections, Animal / microbiology,  transmission
Swine / microbiology*
Swine Diseases / microbiology,  transmission
Time Factors
Reg. No./Substance:
0/Fatty Acids, Volatile

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

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