Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Dinh, Thu T.N.

Committee Member

Karisch, Brandi B.

Committee Member

Burnett, Derris

Date of Degree

8-10-2018

Document Type

Graduate Thesis - Open Access

Major

Agriculture (Animal Science)

Degree Name

Master of Science (M.S.)

College

College of Agriculture and Life Sciences

Department

Department of Animal and Dairy Sciences

Abstract

The objective of this study was to determine the effects of feeding endophyte-infected tall fescue seed to Angus steers during the stocker phase on beef shelf life. Endophyte-infected tall fescue seed had no effect on pH, TBARS, activity of superoxide dismutase and metmyoglobin reductases, and sensory attributes of strip loin steaks or patties (P >= 0.082). However, E+ patties had 0.5% more DMb (P = 0.017) and 27% greater redness (a*) on d 5 of display (P < 0.001). Retail display of steaks decreased lightness (L*), redness, oxymyoglobin percentage (OMb), and MRA from 45.01, 32.60, 67.61%, and 9.54 µM/min/g on d 0 to 40.11, 21.83, 48.95%, and 2.30 µM/min/g, respectively on d 7 (P <= 0.001). Retail display of patties decreased L*, OMb, and, MRA from 52.30, 64.04%, and 5.56 µM/min/g on d 0 to 48.88, 58.5%, and 2.16 µM/min/g, respectively on d 5 (P <= 0.001).

URI

https://hdl.handle.net/11668/19975

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