Theses and Dissertations

Shay Allred

Issuing Body

Mississippi State University

Advisor

Allen, Peter J.

Committee Member

Schilling, M. Wes

Committee Member

Petrie-Hanson, Lora

Committee Member

Bosworth, Brian G.

Date of Degree

5-4-2018

Document Type

Graduate Thesis - Open Access

Major

Wildlife, Fisheries and Aquaculture

Degree Name

Master of Science

College

College of Forest Resources

Department

Department of Wildlife, Fisheries and Aquaculture

Abstract

Red fillet results in a profit loss for catfish processors and producers alike; however, neither the cause nor the abundance of red fillet has been studied extensively. Therefore, an assessment of red fillet in the catfish industry was conducted along with studies subjecting catfish to poor water quality and inoculation with Aeromonas sobria. Within every catfish harvest, 0.12% of fillets were rejected due to blotchy red coloration. Histology revealed congestion of erythrocytes indicating internal hemorrhaging, and A. sobria was isolated from 63% of all red fillets compared to 28% of acceptable fillets. Acute exposure to poor water quality did not produce red fillet in catfish despite high stress levels and mortality rates (22%). Inoculation with A. sobria did induce red fillet with similar coloration to red fillets obtained from catfish processors.

URI

https://hdl.handle.net/11668/21176

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