Effects of Feeding Endophyte-Infected Tall Fescue Seed on Shelf Life of Beef

• Main Author: Holtcamp, Alexander John
• Other Authors: Thu T. N. Dinh
• Format: Others
• Language: en
• Published: MSSTATE 2018
• Subjects: Animal and Dairy Sciences
• Online Access: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06282018-220043/

<p>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 (<i>P</i> >= 0.082). However, E+ patties had 0.5% more DMb (<i>P</i> = 0.017) and 27% greater redness (a*) on d 5 of display (<i>P</i> < 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 (<i>P</i> <= 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 (<i>P</i> <= 0.001).