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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of chlorine added to drinking water during the preslaughter feed withdrawal on microbiology and morphology of the broiler gastrointestinal tract

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Author(s):
Barreiro, F. R. [1] ; Baraldi-Artoni, S. M. [2] ; Pinto, F. R. [1] ; Barbosa, M. M. C. [1] ; Barbosa, J. C. [3] ; Amaral, L. A. [1]
Total Authors: 6
Affiliation:
[1] Univ Estadual Paulista, Dept Vet Prevent Med, BR-14870000 Jaboticabal, SP - Brazil
[2] Univ Estadual Paulista, Dept Anim Morphol & Physiol, BR-14870000 Jaboticabal, SP - Brazil
[3] Univ Estadual Paulista, Dept Stat Anal, BR-14870000 Jaboticabal, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: POULTRY SCIENCE; v. 91, n. 11, p. 2778-2784, NOV 2012.
Web of Science Citations: 3
Abstract

The objective of this experiment was to test the effects of the addition of chlorine to broiler drinking water during a 12-h preslaughter feed withdrawal period on reduction of the quantities of microorganisms, such as Escherichia coli and enterococci, in broiler crops and ceca. Reduction of these microorganisms would likely also reduce contamination of broiler meat by pathogenic bacteria during processing. It was also investigated if the chlorine caused some intestinal damage that could disseminate the microorganisms to the carcass. A total of 40 Cobb male broilers were used. Samples of crop and cecal content were collected for microbiological analysis, and duodenum and jejunum were used for morphological analysis from 10 birds in each treatment. The most probable number (MPN) of E. coli and enterococci in the collected samples of crop and ceca and the measure of the free residual chlorine in water were determined. The scanning electron microscopy from duodenum and jejunum was used to illustrate the mucosa integrity. The chlorine added to water was efficient in reducing the quantities of microorganisms in broiler crops and improved the integrity of the mucosa. Therefore, preslaughter feed withdrawal should be coupled with crop disinfection, because preslaughter feed withdrawal increases the MPN of enterococci and E. coli in broiler crops. So, it presents a higher risk for carcass contamination during slaughterhouse processing and, consequently, a higher risk for public health. (AU)

FAPESP's process: 09/13622-4 - Influence of the preslaughter feed withdrawal at intestinal morphology, Escherichia coli and Enterococcus populations in broilers
Grantee:Fabiana Ribeiro Barreiro
Support Opportunities: Scholarships in Brazil - Master