Does high voltage electrical stimulation of sheep affect rate of tenderisation?

Carrick E. Devine, Robyn Wells, Christian J. Cook, Steven R. Payne

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Romney-cross sheep (n = 24) were shot with a captive bolt, slaughtered, and dressed and suspended by the Achilles tendons. Half of each group of carcasses did not have any electrical input. The remaining carcasses were electrically stimulated at 30 min post mortem for 90 s using 1130 V peak (current 2 A) pulses (half sine wave, 10 ms duration) at an alternating pulse frequency of 14.28 pulses s-1. All carcasses were placed into a room at 10°C with an air velocity of 1-1.5 m s-1. At rigor mortis (ultimate pH) the m. longissimus thoracis et lumborum was removed and cut into four portions to age for 0, 9, 30, and 57 hours at 10°C then frozen at -20°C, cooked from the frozen state, and 1 cm × 1 cm samples sheared using a MIRINZ tenderometer. The sarcomere length of small fibre bundles was measured by laser diffraction and showed no difference between the treatment groups but became longer from rump to head. By chilling and ensuring both electrically stimulated and non-stimulated muscle enters rigor mortis at temperatures from 10 to 17°C, and indexing the start of ageing to rigor mortis, the rate of tenderisation was the same. Stimulation therefore exerts its main effects through early rigor mortis and ageing at higher temperatures.

Original languageEnglish
Pages (from-to)53-58
Number of pages6
JournalNew Zealand Journal of Agricultural Research
Volume44
Issue number1
DOIs
Publication statusPublished - 2001
Externally publishedYes

Fingerprint

rigor mortis
tenderizing
sheep
bolt
diffraction
muscle
laser
Romney
bolts
sarcomeres
rump
air
tendons
longissimus muscle
lasers
temperature
dietary fiber
muscles
duration
rate

Cite this

Devine, Carrick E. ; Wells, Robyn ; Cook, Christian J. ; Payne, Steven R. / Does high voltage electrical stimulation of sheep affect rate of tenderisation?. In: New Zealand Journal of Agricultural Research. 2001 ; Vol. 44, No. 1. pp. 53-58.
@article{7087a389b05144aeb19d7a62f763bf68,
title = "Does high voltage electrical stimulation of sheep affect rate of tenderisation?",
abstract = "Romney-cross sheep (n = 24) were shot with a captive bolt, slaughtered, and dressed and suspended by the Achilles tendons. Half of each group of carcasses did not have any electrical input. The remaining carcasses were electrically stimulated at 30 min post mortem for 90 s using 1130 V peak (current 2 A) pulses (half sine wave, 10 ms duration) at an alternating pulse frequency of 14.28 pulses s-1. All carcasses were placed into a room at 10°C with an air velocity of 1-1.5 m s-1. At rigor mortis (ultimate pH) the m. longissimus thoracis et lumborum was removed and cut into four portions to age for 0, 9, 30, and 57 hours at 10°C then frozen at -20°C, cooked from the frozen state, and 1 cm × 1 cm samples sheared using a MIRINZ tenderometer. The sarcomere length of small fibre bundles was measured by laser diffraction and showed no difference between the treatment groups but became longer from rump to head. By chilling and ensuring both electrically stimulated and non-stimulated muscle enters rigor mortis at temperatures from 10 to 17°C, and indexing the start of ageing to rigor mortis, the rate of tenderisation was the same. Stimulation therefore exerts its main effects through early rigor mortis and ageing at higher temperatures.",
keywords = "Ageing rate, Electrical stimulation, Rigor mortis, Tenderness",
author = "Devine, {Carrick E.} and Robyn Wells and Cook, {Christian J.} and Payne, {Steven R.}",
year = "2001",
doi = "10.1080/00288233.2001.9513462",
language = "English",
volume = "44",
pages = "53--58",
journal = "New Zealand Journal of Agricultural Research",
issn = "0028-8233",
publisher = "Taylor and Francis Ltd.",
number = "1",

}

Does high voltage electrical stimulation of sheep affect rate of tenderisation? / Devine, Carrick E.; Wells, Robyn; Cook, Christian J.; Payne, Steven R.

In: New Zealand Journal of Agricultural Research, Vol. 44, No. 1, 2001, p. 53-58.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Does high voltage electrical stimulation of sheep affect rate of tenderisation?

AU - Devine, Carrick E.

AU - Wells, Robyn

AU - Cook, Christian J.

AU - Payne, Steven R.

PY - 2001

Y1 - 2001

N2 - Romney-cross sheep (n = 24) were shot with a captive bolt, slaughtered, and dressed and suspended by the Achilles tendons. Half of each group of carcasses did not have any electrical input. The remaining carcasses were electrically stimulated at 30 min post mortem for 90 s using 1130 V peak (current 2 A) pulses (half sine wave, 10 ms duration) at an alternating pulse frequency of 14.28 pulses s-1. All carcasses were placed into a room at 10°C with an air velocity of 1-1.5 m s-1. At rigor mortis (ultimate pH) the m. longissimus thoracis et lumborum was removed and cut into four portions to age for 0, 9, 30, and 57 hours at 10°C then frozen at -20°C, cooked from the frozen state, and 1 cm × 1 cm samples sheared using a MIRINZ tenderometer. The sarcomere length of small fibre bundles was measured by laser diffraction and showed no difference between the treatment groups but became longer from rump to head. By chilling and ensuring both electrically stimulated and non-stimulated muscle enters rigor mortis at temperatures from 10 to 17°C, and indexing the start of ageing to rigor mortis, the rate of tenderisation was the same. Stimulation therefore exerts its main effects through early rigor mortis and ageing at higher temperatures.

AB - Romney-cross sheep (n = 24) were shot with a captive bolt, slaughtered, and dressed and suspended by the Achilles tendons. Half of each group of carcasses did not have any electrical input. The remaining carcasses were electrically stimulated at 30 min post mortem for 90 s using 1130 V peak (current 2 A) pulses (half sine wave, 10 ms duration) at an alternating pulse frequency of 14.28 pulses s-1. All carcasses were placed into a room at 10°C with an air velocity of 1-1.5 m s-1. At rigor mortis (ultimate pH) the m. longissimus thoracis et lumborum was removed and cut into four portions to age for 0, 9, 30, and 57 hours at 10°C then frozen at -20°C, cooked from the frozen state, and 1 cm × 1 cm samples sheared using a MIRINZ tenderometer. The sarcomere length of small fibre bundles was measured by laser diffraction and showed no difference between the treatment groups but became longer from rump to head. By chilling and ensuring both electrically stimulated and non-stimulated muscle enters rigor mortis at temperatures from 10 to 17°C, and indexing the start of ageing to rigor mortis, the rate of tenderisation was the same. Stimulation therefore exerts its main effects through early rigor mortis and ageing at higher temperatures.

KW - Ageing rate

KW - Electrical stimulation

KW - Rigor mortis

KW - Tenderness

UR - http://www.scopus.com/inward/record.url?scp=0034941831&partnerID=8YFLogxK

U2 - 10.1080/00288233.2001.9513462

DO - 10.1080/00288233.2001.9513462

M3 - Article

VL - 44

SP - 53

EP - 58

JO - New Zealand Journal of Agricultural Research

JF - New Zealand Journal of Agricultural Research

SN - 0028-8233

IS - 1

ER -