Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

McDaniel, Chris

Committee Member

Coufal, Craig

Committee Member

Peebles, David

Date of Degree

8-1-2009

Document Type

Graduate Thesis - Open Access

Major

Agricultural Science

Degree Name

Master of Science

College

College of Agriculture and Life Sciences

Department

Department of Poultry Science

Abstract

Ultraviolet light (UV) and hydrogen peroxide (H2O2) decrease eggshell bacteria. However, when combined, the optimum amount of each and effects on hatchability are unknown. In Experiment 1, when compared to other concentrations of H2O2 and lengths of UV, the combination of 1.5% H2O2 and 8 minutes of UV yielded optimum results with a 3 log10 CFU/egg reduction in bacteria on the eggshell. In Experiment 2, exposing eggs to this optimum combination yielded a 1000 fold reduction in eggshell bacteria but only a numerical increase in hatch of set and hatch of fertile. In Experiment 3, eggs exposed to repetitive treatments of H2O2 and UV yielded a 4 log reduction in eggshell bacteria but no differences in hatchability or chick characteristics. In conclusion, the combination of H2O2 and UV proved to be effective for eggshell sanitization, especially when used repetitively, and did not alter hatchability.

URI

https://hdl.handle.net/11668/15396

Comments

Eggshell sanitization||Bacteria||Ultraviolet light||Hydrogen peroxide||Hatchability

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