Theses and Dissertations

Advisor

Boltz, Timothy P.

Committee Member

Zhang, Li

Committee Member

Ayres, Victoria

Date of Degree

12-12-2025

Original embargo terms

Visible MSU Only 2 Years

Document Type

Graduate Thesis - Campus Access Only

Major

Agriculture (Poultry Science)

Degree Name

Master of Science (M.S.)

College

College of Agriculture and Life Sciences

Department

Department of Poultry Science

Abstract

Microorganisms present in feed represent a potential food safety hazard by entering the human food chain. The Food Safety Modernization Act has brought attention to the importance of research in preventative and control measures to ensure clean feed is being manufactured. Experiment 1 analyzed the inclusion of two feed sanitizers, independently and in combination, in mash feed contaminated with a Salmonella Infantis. Salmonella reduction from feed sanitizers as well as Salmonella carryover between treatments were evaluated by collecting feed and swab samples from each treatment. In Experiment 2, ingredient and feed samples were collected from feed mills located in the Southeastern region of the United States. Traditional culture methods were followed to analyze prevalence of Salmonella and Campylobacter in all samples, and culture positive samples were confirmed by PCR. The presence of E. coli, aerobic colony counts, and coliform prevalence were evaluated on CompactDry™ plates for analysis of feed mill hygiene.

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