Microbiological Status of Broiler Respiratory Tracts Before and During Catching for Transport to the Processing Plant
| Autor: | K.M. Wilson, D. V. Bourassa, Michael Czarick, Brian D. Fairchild, R. J. Buhr |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Salmonella Veterinary medicine biology Aerobic bacteria animal diseases digestive oral and skin physiology 030106 microbiology Broiler food and beverages biology.organism_classification medicine.disease_cause digestive system Enterobacteriaceae 03 medical and health sciences medicine.anatomical_structure medicine Animal Science and Zoology Preharvest Flock Respiratory system Respiratory tract |
| Zdroj: | Journal of Applied Poultry Research. 27:597-602 |
| ISSN: | 1056-6171 |
| DOI: | 10.3382/japr/pfy029 |
| Popis: | SUMMARY A significant point of entry for Salmonella into a processing plant is within the broilers to be processed. Prior to transport to the processing plant, feed (4 h) and water are withdrawn from the broilers on the farm before they are caught and cooped. During catching, an increased presence of dust in the house air is visible and may affect the presence of bacteria within the broiler’s respiratory tract. The objective of this study was to examine the effect of catching on the levels of aerobic bacteria (aerobic plate count [APC]), levels and prevalence of Enterobacteriaceae (EB), and prevalence of Salmonella within broiler respiratory tracts. To determine flock Salmonella status 1 wk prior to catching, broiler carcasses were sampled for APC, EB, and Salmonella by respiratory tract flushing and ceca were sampled for Salmonella. At 1 d prior to catching and when half of the broilers in the house were caught, broilers were again collected, transported to the pilot plant, euthanized, and sampled. In Trial 1, there were no significant differences between sampling times for ceca Salmonella or respiratory EB and APC. However, Salmonella prevalence in the respiratory tract was significantly higher at 1 wk preharvest compared to during catching. In Trial 2, EB was significantly lower during catching compared to 1 wk preharvest. No significant differences were detected in Trial 3. Based on these results, the presence of aerosolized dust in the broiler house during catching does not appear to lead to increases in broiler respiratory tract microbial contamination. |
| Databáze: | OpenAIRE |
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