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Food, fibre and pharmaceuticals from animals
RESEARCH ARTICLE

Quality of lamb meat from the Information Nucleus Flock

R. D. Warner A B K L , R. H. Jacob C , J. E. Hocking Edwards D , M. McDonagh E , K. Pearce F , G. Geesink G , G. Kearney H , P. Allingham I , D. L. Hopkins J and D. W. Pethick F
+ Author Affiliations
- Author Affiliations

A Cooperative Research Centre for Sheep Industry Innovation, Armidale, NSW 2351, Australia.

B Livestock Production Sciences, Department of Primary Industries, 600 Sneydes Road, Vic. 3030, Australia.

C Department of Agriculture and Food WA, Baron Hay Court, South Perth, WA 6151, Australia.

D SARDI Livestock Systems, Struan Research Centre, PO Box 613, Naracoorte, SA 5271, Australia.

E Biosciences Research Division, Department of Primary Industries, LaTrobe University, Bundoora, Vic. 3075, Australia.

F School of Veterinary & Biomedical Sciences, Murdoch University, 90 South Street, Murdoch, WA 6150, Australia.

G School of Rural and Environmental Science, University of New England, Armidale, NSW 2351, Australia.

H 36 Paynes Road, Hamilton, Vic. 3300, Australia.

I CSIRO Division of Livestock Industries, Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, Qld 4067, Australia.

J Industry & Investment NSW, Centre for Red Meat and Sheep Development, Cowra, NSW 2794, Australia.

K Present address: CSIRO Food and Nutritional Sciences, Private Bag 16, Werribee, Vic. 3030, Australia.

L Corresponding author. Email: robyn.warner@csiro.au

Animal Production Science 50(12) 1123-1134 https://doi.org/10.1071/AN10129
Submitted: 25 July 2010  Accepted: 26 October 2010   Published: 23 November 2010

Abstract

The effects of production and processing factors on tenderness, and colour of lamb meat produced from 7 locations as part of the Australian Sheep Industry CRC’s Information Nucleus flock were investigated, using data from 2052 lambs slaughtered in 2007. At 24 h post-slaughter, samples of m. longissimus lumborum (LL) and m. semimembranosus (SM) were collected for measurement of intramuscular fat (IMF), myoglobin, iron and copper and fresh meat colour (L*, a*, b*) and pH at 24 h measured on the LL. pH and temperature measurements made pre-rigor were used to calculate the pH at 18°C. Tenderness was measured by LL shear force at days 1 (SF1) and 5 (SF5) post-slaughter, the shear force difference (SF-diff) and SM compression and collagen concentration were determined. Retail colour stability was assessed using over-wrapped LL under simulated retail display for 3 days, according to the change in the oxymyoglobin/metmyoglobin ratio. All traits were affected by flock and date of slaughter (P < 0.001). After 4 days of ageing, 70–95% of the LL samples from all flocks, except for one, had acceptable tenderness for consumers based on their shear force. Low IMF, high LL pH at 18°C and high pH at 24 h increased SF1 and SF5 and also had an effect on SF-diff (P < 0.001). The retail colour of 44.8% of the samples on day 3 of retail display were lower than acceptable. Retail colour was influenced by IMF, pH18 and the concentration of iron and copper (P < 0.001). In conclusion, breeding and management practices that increase muscle IMF levels and reduce ultimate pH values and processing practices that result in moderate rates of pH fall post-slaughter, improve the tenderness of lamb. Extension of retail colour stability may be antagonistic to traits associated with tenderness and nutritional traits, particularly IMF and mineral levels.


References

Allingham PG, Gardner GE, Taylor M, Hegarty RS, Harper GS (2006) Effects of sire genotype and plane of nutrition on fascicular structure of M. longissimus thoracis et lumborum and its effect on eating quality. Australian Journal of Agricultural Research 57, 641–650.
Effects of sire genotype and plane of nutrition on fascicular structure of M. longissimus thoracis et lumborum and its effect on eating quality.Crossref | GoogleScholarGoogle Scholar |

Allingham PG, Barris W, Reverter A, Hilsenstein V, van de Ven R, Hopkins DL (2009) Sire and growth-path effects on sheep meat production. 3. Fascicular structure of lamb loin muscle (m. longissimus lumborum) and the impact on eating quality. Animal Production Science 49, 239–247.
Sire and growth-path effects on sheep meat production. 3. Fascicular structure of lamb loin muscle (m. longissimus lumborum) and the impact on eating quality.Crossref | GoogleScholarGoogle Scholar |

Anon. (1998) ‘Handbook of Australian meat.’ (AUSMEAT: Brisbane, Qld) http://www.ausmeat.com.au/industry-standards/meat/sheep.aspx [Verified 20 October 2010]

Bouton PE, Harris PV (1972) A comparison of some objective methods used to assess meat tenderness. Journal of Food Science 37, 218–221.
A comparison of some objective methods used to assess meat tenderness.Crossref | GoogleScholarGoogle Scholar |

Colgrave ML, Allingham PG, Jones A (2008) Hydroxyproline quantification for the estimation of collagen in tissue using multiple reaction monitoring mass spectrometry. Journal of Chromatography. A 1212, 150–153.
Hydroxyproline quantification for the estimation of collagen in tissue using multiple reaction monitoring mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXhtlGmu7fJ&md5=5825f2e60aa9a686a3ad767c2220940aCAS | 18950772PubMed |

Devine CE (1994) Incidence of high pH beef and lamb: implications for meat quality. Proceedings Meat Industry Research Conference, Auckland, New Zealand 28, 125–132.

Faustman C, Sun Q, Mancini R, Suman SP (2010) Myoglobin and lipid oxidation interactions: mechanistic bases and control. Meat Science 86, 86–94.
Myoglobin and lipid oxidation interactions: mechanistic bases and control.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXos1Cntrk%3D&md5=a0d92d301b16e9cd8a44f88558155fb8CAS | 20554121PubMed |

Ferguson DM, Warner RD (2008) Have we underestimated the impact of pre-slaughter stress on meat quality in ruminants? Meat Science 80, 12–19.
Have we underestimated the impact of pre-slaughter stress on meat quality in ruminants?Crossref | GoogleScholarGoogle Scholar |

Fishell VK, Aberle ED, Judge MD (1985) Palatability and muscle properties of beef as influenced by preslaughter growth rate. Journal of Animal Science 61, 151.

Fogarty NM, Hopkins DL, van de Ven R (2000) Lamb production from diverse genotypes 2. Carcass characteristics. Animal Science 70, 147–156.

Fogarty NM, Banks RG, van der Werf JHJ, Ball AJ, Gibson JP (2007) The information nucleus – a new concept to enhance sheep industry genetic improvement. Proceedings of the Association for Advancement of Animal Breeding and Genetics 17, 29–32.

Gardner GE, Kennedy L, Milton JTB, Pethick DW (1999) Glycogen metabolism and ultimate pH of muscle in Merino, first-cross, and second-cross wether lambs as affected by stress before slaughter. Australian Journal of Agricultural Research 50, 175–181.
Glycogen metabolism and ultimate pH of muscle in Merino, first-cross, and second-cross wether lambs as affected by stress before slaughter.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK1MXhslCrs7s%3D&md5=1a1f66f943b2200f52dc59e5980a9ff1CAS |

Graafhuis AE, Devine CE (1994) Incidence of high pH beef and Lamb II: Results of an ultimate pH survey on beef and sheep plants in New Zealand. Proceedings of the Meat Industry Research Conference 28, 133–141.

Harper GS (1999) Trends in skeletal muscle biology and the understanding of toughness in beef. Australian Journal of Agricultural Research 50, 1105–1129.
Trends in skeletal muscle biology and the understanding of toughness in beef.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK1MXnsVGqu7o%3D&md5=9938dc5bcfea572abaecb47e87429244CAS |

Harper GS, Allingham PG, Le Feuvre RP (1999) Changes in connective tissue of M. semitendinosus as a response to different growth paths in steers. Meat Science 53, 107–114.
Changes in connective tissue of M. semitendinosus as a response to different growth paths in steers.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK1MXksVaqtL4%3D&md5=c4ec8657bb78595fc2ca6cb7e33953ccCAS |

Hegarty RS, Shands C, Marchant R, Hopkins DL, Ball AJ, Harden S (2006) Effects of available nutrition and sire breeding values for growth and muscling on the development of crossbred lambs. 1: Growth and carcass characteristics. Australian Journal of Agricultural Research 57, 593–603.
Effects of available nutrition and sire breeding values for growth and muscling on the development of crossbred lambs. 1: Growth and carcass characteristics.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28XlvFaqtL8%3D&md5=f9643e3a70f32d6ecce6d612a97f15ebCAS |

Hopkins DL, Fogarty NM (1998) Diverse lamb genotypes – 2. Meat pH, colour and tenderness. Meat Science 49, 477–488.
Diverse lamb genotypes – 2. Meat pH, colour and tenderness.Crossref | GoogleScholarGoogle Scholar |

Hopkins DL, Geesink GH (2009) Protein degradation post mortem and tenderisation. In ‘Applied muscle biology and meat science’. (Eds M Du, RJ McCormick) pp. 149–173. (CRC Press, Taylor & Francis Group: USA)

Hopkins DL, Thompson JM (2001) The relationship between tenderness, proteolysis, muscle contraction and dissociation of actomyosin. Meat Science 57, 1–12.
The relationship between tenderness, proteolysis, muscle contraction and dissociation of actomyosin.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3cXmslKltrg%3D&md5=e01a7a157a755b80f862dace914670deCAS |

Hopkins DL, Thompson JM (2002) Factors contributing to proteolysis and disruption of myofibrillar proteins and the impact on tenderisation in beef and sheep meat. Australian Journal of Agricultural Research 53, 149–166.
Factors contributing to proteolysis and disruption of myofibrillar proteins and the impact on tenderisation in beef and sheep meat.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD38Xit1amtLw%3D&md5=d1b18cc178ed0d7c46e54ca308440367CAS |

Hopkins DL, Hatcher S, Pethick DW, Thornberry KJ (2005a) Carcass traits, meat quality and muscle enzyme activity in strains of Merino wether hoggets. Australian Journal of Experimental Agriculture 45, 1225–1230.
Carcass traits, meat quality and muscle enzyme activity in strains of Merino wether hoggets.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2MXht1Squ7nM&md5=c07fce78967d781efe4ab4c89abc9481CAS |

Hopkins DL, Hegarty RS, Farrell TC (2005b) Relationship between sire estimated breeding values and the meat and eating quality of meat from their progeny grown on two planes of nutrition. Australian Journal of Experimental Agriculture 45, 525–533.
Relationship between sire estimated breeding values and the meat and eating quality of meat from their progeny grown on two planes of nutrition.Crossref | GoogleScholarGoogle Scholar |

Hopkins DL, Hegarty RS, Walker PJ, Pethick DW (2006) Relationship between animal age, intramuscular fat, cooking loss, pH, shear force and eating quality of aged meat from sheep. Australian Journal of Experimental Agriculture 46, 879–884.
Relationship between animal age, intramuscular fat, cooking loss, pH, shear force and eating quality of aged meat from sheep.Crossref | GoogleScholarGoogle Scholar |

Hopkins DL, Stanley DF, Martin LC, Toohey ES, Gilmour AR (2007a) Genotype and age effects on sheep meat production. 3. Meat quality. Australian Journal of Experimental Agriculture 47, 1151–1164.

Hopkins DL, Stanley DF, Toohey ES, Gardner GE, Pethick DW, van de Ven R (2007b) Sire and growth path effects on sheep meat production. 2. Meat and eating quality. Australian Journal of Experimental Agriculture 47, 1219–1228.
Sire and growth path effects on sheep meat production. 2. Meat and eating quality.Crossref | GoogleScholarGoogle Scholar |

Hughes D (2008) Managing today, planning for tomorrow. PNW Agribusiness Executive Seminar, Skamania Lodge, WA, 17 November 2008.

Hunt MC, Acton J, Benedict RC, Calkins CR, Cornforth DP, Jeremiah LE, Olson DG, Salm CP, Savell JW, Shivas SD (1991) Guidelines for meat colour evaluation. Reciprocal Meat Conference Proceedings 44, 1–17.

Jacob RH, Pethick DW, Chapman HM (2005) Muscle glycogen concentrations in commercial consignments of Australian lamb measured on farm and post-slaughter after three different lairage periods. Australian Journal of Experimental Agriculture 45, 543–552.
Muscle glycogen concentrations in commercial consignments of Australian lamb measured on farm and post-slaughter after three different lairage periods.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2MXlsFOmtbc%3D&md5=776cbac6ae266d0eb93166d4c26b9118CAS |

Johnston DJ, Reverter A, Robinson DL, Ferguson DM (2001) Sources of variation in mechanical shear force measures of tenderness in beef from tropically adapted genotypes, effects of data editing and their implications for genetic parameter estimation. Australian Journal of Experimental Agriculture 41, 991–996.
Sources of variation in mechanical shear force measures of tenderness in beef from tropically adapted genotypes, effects of data editing and their implications for genetic parameter estimation.Crossref | GoogleScholarGoogle Scholar |

Khliji S, van de Ven R, Lamb TA, Lanza M, Hopkins DL (2010) Relationship between consumer ranking of lamb colour and objective measures of colour. Meat Science 85, 224–229.
Relationship between consumer ranking of lamb colour and objective measures of colour.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BC3c3ks1amuw%3D%3D&md5=3ddcec9270515bb610324564531235abCAS | 20374889PubMed |

Lamb TA, van de Ven R, Hopkins DL (2010) Importance of iron and omega-3 fatty acids to lamb consumers. In ‘Proceedings of the 28th Conference of the Australian Society of Animal Production’, July 2010. p. 112.

Lepetit J (2007) A theoretical approach of the relationships between collagen content, collagen cross-links and meat tenderness. Meat Science 76, 147–159.
A theoretical approach of the relationships between collagen content, collagen cross-links and meat tenderness.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXitFOrtrg%3D&md5=2fb8ae60a0cc9529a36e4278bae5c358CAS |

Lyford C, Thompson JM, Polkinghorne R, Miller M, Nishimura T, Neath K, Allen P, Belasco E (2010) Is willingness to pay (WTP) for beef quality grades affected by consumer demographics and meat consumption habits? Australasian Agribusiness Review 18, 1–17.

Menzies DJ, Hopkins DL (1996) Relationship between colour and pH in lamb loins. In ‘Proceedings of the 21st Conference of the Australian Society of Animal Production’, July 2010. p. 353.

MLA (2007) Buy and sell MSA lambs. A quick reference guide: producers, agents and buyers. Available at http://www.mla.com.au/Marketing-red-meat/Guaranteeing-eating-quality/Meat-Standards-Australa/Lamb-and-sheepmeat [Verified 22 July 2010]

Mortimer SI, van der Werf JHJ, Jacob RH, Pethick DW, Pearce KL, Warner RD, Geesink GH, Hocking Edwards JE, Gardner GE, Ponnampalam EN, Kitessa SM, Ball AJ, Hopkins DL (2010) Preliminary estimates of genetic parameters for carcass and meat quality traits in Australian sheep. Animal Production Science 50, 1135–1144.
Preliminary estimates of genetic parameters for carcass and meat quality traits in Australian sheep.Crossref | GoogleScholarGoogle Scholar |

Nakamura YN, Tsuneishi E, Kamya M, Yamada A (2010) Histological contribution of collagen architecture to beef toughness. Journal of Food Science 75, E73–E75.
Histological contribution of collagen architecture to beef toughness.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXhsVKgu74%3D&md5=50ec86655f0c9f831548f35d387d3c79CAS | 20492169PubMed |

Okeudo NJ, Moss BW (2008) Production performance and meat quality characteristics of sheep comprising four sex-types over a range of slaughter weights produced following commercial practice. Meat Science 80, 522–528.
Production performance and meat quality characteristics of sheep comprising four sex-types over a range of slaughter weights produced following commercial practice.Crossref | GoogleScholarGoogle Scholar |

Pearce KL, van de Ven R, Mudford C, Warner RD, Hocking-Edwards JE, Jacob R, Pethick DW, Hopkins DL (2010) Case studies demonstrating the benefits on pH and temperature decline of optimising medium-voltage electrical stimulation of lamb carcasses. Animal Production Science 50, 1107–1114.
Case studies demonstrating the benefits on pH and temperature decline of optimising medium-voltage electrical stimulation of lamb carcasses.Crossref | GoogleScholarGoogle Scholar |

Perry D, Shorthose WR, Ferguson DM, Thompson JM (2001) Methods used in the CRC program for the determination of carcass yield and beef quality. Australian Journal of Experimental Agriculture 41, 953–957.
Methods used in the CRC program for the determination of carcass yield and beef quality.Crossref | GoogleScholarGoogle Scholar |

Pethick DW, Davidson RH, Hopkins DL, Jacob RH, D’Souza DN, Thompson JM, Walker PJ (2005a) The effect of dietary treatment on meat quality and on consumer perception of sheep meat eating quality. Australian Journal of Experimental Agriculture 45, 517–524.
The effect of dietary treatment on meat quality and on consumer perception of sheep meat eating quality.Crossref | GoogleScholarGoogle Scholar |

Pethick DW, Hopkins DL, D’Souza DN, Thompson JM, Walker PJ (2005b) Effects of animal age on the eating quality of sheep meat. Australian Journal of Experimental Agriculture 45, 491–498.
Effects of animal age on the eating quality of sheep meat.Crossref | GoogleScholarGoogle Scholar |

Pethick DW, Warner RD, Banks RG (2006) Genetic improvement of lamb – industry issues and the need for integrated research. Australian Journal of Agricultural Research 57, 591–592.
Genetic improvement of lamb – industry issues and the need for integrated research.Crossref | GoogleScholarGoogle Scholar |

Pethick DW, Barendse W, Hocquette JF, Thompson JM, Wang YH (2007) Regulation of marbling and body composition – growth and development, gene markers and nutritional biochemistry. In ‘Energy and protein metabolism and nutrition’. (Eds I Ortigues-Marty, N Miraux, W Brand-Williams) pp. 75–88. (Wageningen Academic Publishers: The Netherlands)

Pethick DW, Pannier L, Gardner GE, Geesink GH, Ball AJ, Hopkins DL, Jacob RH, Mortimer SI, Pearce KL (2010) Genetic and production factors that influence the content of intramuscular fat in the meat of prime lambs. In ‘Energy and protein metabolism and nutrition’. EAAP publication no. 127. (Ed. G Matteo Crovetto) pp. 673–674. (Wageningen Academic Publishers, The Netherlands)

Ponnampalam EN, Butler KL, Hopkins DL, Kerr MG, Dunshea FR, Warner RD (2008) Genotype and age effects on sheep meat production. 5. Lean meat and fat content in the carcasses of Australian sheep genotypes at 20-, 30- and 40-kg carcass weights. Australian Journal of Experimental Agriculture 48, 893–897.
Genotype and age effects on sheep meat production. 5. Lean meat and fat content in the carcasses of Australian sheep genotypes at 20-, 30- and 40-kg carcass weights.Crossref | GoogleScholarGoogle Scholar |

Ponnampalam EN, Hopkins DL, Butler KL, Kitessa SM, Hocking-Edwards JE, Jacob RH, Pethick DW (2010) Alpha-linolenic acid (ala) and its longer chain omega-3 derivatives (EPA, DPA & DHA) in meat from lambs reared under extensive grazing across several locations of Australia. In ‘Proceedings 56th International Congress of Meat Science and Technology. Session B’. pp. 1–3. Jeju, South Korea.

Purchas RW (1972) The relative importance of some determinants of beef tenderness. Journal of Food Science 37, 341–345.
The relative importance of some determinants of beef tenderness.Crossref | GoogleScholarGoogle Scholar |

Purchas RW, Aungsupakorn R (1993) Further investigations into the relationship between ultimate pH and tenderness for beef samples from bulls and steers. Meat Science 34, 163–178.
Further investigations into the relationship between ultimate pH and tenderness for beef samples from bulls and steers.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK3sXksVOqsL0%3D&md5=98ac9f54b2382d0a08f8928e3e4459f8CAS |

Purslow PP, Mandell IB, Widowski TM, Brown J, deLange CFM, Robinson JAB, Squires EJ, Cha MC, VanderVoort G (2008) Modelling quality variations in commercial Ontario pork production. Meat Science 80, 123–131.
Modelling quality variations in commercial Ontario pork production.Crossref | GoogleScholarGoogle Scholar |

Reverter A, Johnston DJ, Perry D, Goddard ME, Burrow HM (2003) Genetic and phenotypic characterisation of animal, carcass, and meat quality traits from temperate and tropically adapted beef breeds. 2. Abattoir carcass traits. Australian Journal of Agricultural Research 54, 119–134.
Genetic and phenotypic characterisation of animal, carcass, and meat quality traits from temperate and tropically adapted beef breeds. 2. Abattoir carcass traits.Crossref | GoogleScholarGoogle Scholar |

Sanudo C, Alfonso M, Sanchez A, Berge P, Dransfield E, Zygoyiannis D, Stamataris C, Thorkelsson G, Valdimarsdottir T, Piasentier E, Mills C, Nute GR, Fischer AV (2003) Meat texture of lambs from different European production systems. Australian Journal of Agricultural Research 54, 551–560.
Meat texture of lambs from different European production systems.Crossref | GoogleScholarGoogle Scholar |

Savell JW, Cross HR, Smith GC (1986) Percentage ether extractable fat and moisture content of beef longissimus muscle as related to USDA marbling score. Journal of Food Science 51, 838–839.
Percentage ether extractable fat and moisture content of beef longissimus muscle as related to USDA marbling score.Crossref | GoogleScholarGoogle Scholar |

Smith GC, Dutson TR, Hostetler RL, Carpenter ZL (1976) Fatness, rate of chilling and tenderness of lamb. Journal of Food Science 41, 748–756.
Fatness, rate of chilling and tenderness of lamb.Crossref | GoogleScholarGoogle Scholar |

Thompson JM, Hopkins DL, D’Souza DN, Walker PJ, Baud SR, Pethick DW (2005) The impact of processing on sensory and objective measurements of sheep meat eating quality. Australian Journal of Experimental Agriculture 45, 561–573.
The impact of processing on sensory and objective measurements of sheep meat eating quality.Crossref | GoogleScholarGoogle Scholar |

Toohey ES, Hopkins DL, Stanley DF, Nielsen SG (2008) The impact of new generation pre-dressing medium-voltage electrical stimulation on tenderness and colour stability in lamb meat. Meat Science 79, 683–691.
The impact of new generation pre-dressing medium-voltage electrical stimulation on tenderness and colour stability in lamb meat.Crossref | GoogleScholarGoogle Scholar |

Tornberg E (1996) Biophysical aspects of meat tenderness. Meat Science 43, 175–191.
Biophysical aspects of meat tenderness.Crossref | GoogleScholarGoogle Scholar |

Trout GR (1991) A rapid method for measuring pigment concentration in porcine and other low pigmented muscles. In ‘Proceedings of the 37th International Congress of Meat Science and Technology, Kulmbach. Germany’. pp. 198–201.

US Environmental Protection Agency (1991). Methods for the determination of metals in envirnmental samples. EPA/600/4-91-010.

Warner RD, Pethick DW, Greenwood PL, Ponnampalam EN, Banks RG, Hopkins DL (2007a) Unravelling the complex interactions between genetics, animal age and nutrition as they impact on tissue deposition, muscle characteristics and quality of Australian sheep meat. Australian Journal of Experimental Agriculture 47, 1229–1238.
Unravelling the complex interactions between genetics, animal age and nutrition as they impact on tissue deposition, muscle characteristics and quality of Australian sheep meat.Crossref | GoogleScholarGoogle Scholar |

Warner RD, Ponnampalam EN, Kearney GA, Hopkins DL, Jacob RH (2007b) Genotype and age at slaughter influence the retail shelf-life of the loin and knuckle from sheep carcasses. Australian Journal of Experimental Agriculture 47, 1190–1200.
Genotype and age at slaughter influence the retail shelf-life of the loin and knuckle from sheep carcasses.Crossref | GoogleScholarGoogle Scholar |

Warner RD, Greenwood PL, Pethick DW, Ferguson DM (2010) Genetic and environmental effects on meat quality. Meat Science 86, 171–183.
Genetic and environmental effects on meat quality.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXos1Cntr4%3D&md5=443b46addc97569547a2c77e816835bdCAS | 20561754PubMed |

Young OA, Hogg BW, Mortimer BJ, Waller JE (1993) Collagen in two muscles of sheep. New Zealand Journal of Agricultural Research 36, 143–150.