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Related Experiment Videos

Hatchery-acquired salmonellae in broiler chicks

J S Bailey1, N A Cox, M E Berrang

  • 1USDA, Agricultural Research Service, Russell Research Center, Athens, Georgia 30613.

Poultry Science
|July 1, 1994
PubMed
Summary

Hatchery contamination exposes chicks to salmonellae. Eggshells are the best sample for detecting contamination, correlating well with chick rinse results.

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Area of Science:

  • Poultry Science
  • Microbiology
  • Food Safety

Background:

  • Newly hatched chicks are highly susceptible to salmonellae colonization.
  • Hatchery contamination poses a significant food safety risk.

Purpose of the Study:

  • To assess salmonellae contamination in hatcheries.
  • To identify the most effective sampling method for detecting hatchery salmonellae.

Main Methods:

  • Salmonellae testing on eggshell fragments, chick external rinses, and intestinal tracts at Day 0.
  • Post-hatch sampling of chick rinses and ceca after 1 week in controlled environments.
  • Comparison of contamination levels across different sampling methods and hatcheries.

Main Results:

  • Salmonellae were detected in 17% of eggshells, 21% of chick rinses, and 5% of intestines at Day 0.
  • Significant differences in contamination were observed between hatching cabinet replications.
  • A correlation was found between hatchery-acquired salmonellae and potential seeder birds.

Conclusions:

  • Eggshell fragments are recommended as the optimal sample for determining hatchery salmonellae contamination.
  • Eggshell sampling showed a strong correlation (0.81) with chick rinse results.
  • Effective hatchery sampling is crucial for controlling salmonellae transmission in poultry.

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