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Meat Sci. 1997 Aug;46(4):367-77. doi: 10.1016/s0309-1740(97)00031-4.

Bos indicus-cross feedlot cattle with excitable temperaments have tougher meat and a higher incidence of borderline dark cutters.

Meat science

B D Voisinet, T Grandin, S F O'Connor, J D Tatum, M J Deesing

Affiliations

  1. Department of Animal Sciences, Colorado State University, Fort Collins, CO 80523, USA.

PMID: 22062320 DOI: 10.1016/s0309-1740(97)00031-4

Abstract

Temperament ratings based on a numerical scale (chute score) were assessed during weighing and handling of cattle at a feedlot. Breeds studied included Braford, Red Brangus and Simbrah. Cattle were fed to a constant fat thickness of 9 to 13 mm (target = 11 mm) over the 12th rib as determined by periodic ultrasound measurements. Cattle were slaughtered in a commercial slaughter plant and stunned by captive bolt. Temperament rating had a significant effect on the incidence of borderline dark cutters which were downgraded by a USDA grader (P = 0.01). Temperament score also had a significant effect on tenderness (P < 0.001) as evaluated by Warner-Bratzler Shear (WBS) force at day 14 post mortem. The calmest animals which stood still when restrained in a hydraulic squeeze chute had a mean WBS force of 2.86 ± 11 kg and cattle which became highly agitated and struggled violently during restraint averaged 3.63 ± 19 kg. Forty percent of these cattle had WBS force values which were over 3.9 kg which is a threshold value for acceptability in food service establishments. These data show that cattle with the most excitable temperament ratings produce carcasses with tougher meat and a higher incidence of borderline dark cutters than cattle with calm temperament ratings.

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