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RESEARCH ARTICLE

Fatty acid composition and physicochemical and sensory characteristics of meat from ewe lambs supplemented with zilpaterol hydrochloride and soybean oil

J. L. Dávila-Ramírez A , L. Avendaño-Reyes B , U. Macías-Cruz B , E. A. Peña-Ramos A , T. Y. Islava-Lagarda A , L. Zamorano-García A , M. Valenzuela-Melendres A , J. P. Camou A and H. González-Ríos A C
+ Author Affiliations
- Author Affiliations

A Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera a la Victoria Km. 0.6, Hermosillo, Sonora, México, 83304.

B Instituto de Ciencias Agrícolas, Universidad Autónoma de Baja California, Ejido Nuevo León, Baja California, México, 21705.

C Corresponding author. Email: hugory@ciad.mx

Animal Production Science 57(4) 767-777 https://doi.org/10.1071/AN15311
Submitted: 31 March 2015  Accepted: 25 January 2016   Published: 20 May 2016

Abstract

The effects of supplementation of zilpaterol hydrochloride (ZH; 0 or 10 mg/lamb daily) and soybean oil (SBO; 0% or 6%) on carcass traits, body fat deposition, chemical, physicochemical, sensory quality, and fatty acid composition of the longissimus thoracis muscle (LTM) of ewe lambs were studied using a randomised complete design with a 2 × 2 factorial arrangement. After a 32-day feeding period, all ewes were slaughtered and LTM collected. Interactions between ZH × SBO were not observed (P > 0.05) for any of the variables evaluated. Feedlot performance was not modified (P > 0.05) by ZH and SBO supplementation. Biological yield and hot carcass weight were increased by ZH supplementation (P < 0.05). ZH and SBO supplementation did not alter body fat deposition (kidney, pelvic and heart, renal, thickness and intramuscular fat) and the empty bodyweight (P > 0.05). Meanwhile, feeding ZH decreased colour parameters (L*, a*, b* and CHROMA) (P < 0.05), but not others characteristics of LTM (P > 0.05). Sensory panelists observed an increase in appearance (P < 0.001) by ZH supplementation. Additionally, ZH decreased (P < 0.05) the content of C20:5n3 (eicosapentaenoic acid), C22:6n-3 (docosahexaenoic acid) and total omega-3 fatty acids, compared with the zero ZH group. Physicochemicals and sensory characteristics, and fatty acid composition of meat were not modified by SBO (P > 0.05). In conclusion, ZH supplementation to ewe lambs increased biological yield and hot carcass weight, without changes in body fat deposition and decreased eicosapentaenoic acid, docosahexaenoic acid and omega-3 contents and caused a decrease in colour of LTM. However, feeding SBO caused no changes in the carcass or meat quality traits and minimal changes in fatty acid composition of LTM.

Additional keywords: fatty acid profile, meat quality.


References

American Meat Science Association (AMSA) (1995) ‘Research guidelines for cookery, sensory evaluation and instrumental tenderness of fresh meat.’ (National Livestock and Meat Board: Chicago, IL)

Association of Official Analytical Chemists (AOAC) (1990) ‘Official methods of analysis.’ 5th edn. (Association of Analytical Chemists: Arlington, VA)

Association of Official Analytical Chemists (AOAC) (2000) ‘Official methods of analysis.’ 17th edn. (Association of Analytical Chemists: Washington, DC)

Avendaño-Reyes L, Macías-Cruz U, Álvarez-Valenzuela FD, Águila-Tepato E, Torrentera-Olivera NG, Soto-Navarro SA (2011) Effects of zilpaterol hydrochloride on growth performance, carcass characteristics, and wholesale cut yield of hair-breed ewe lambs consuming feedlot diets under moderate environmental conditions. Journal of Animal Science 89, 4188–4194.
Effects of zilpaterol hydrochloride on growth performance, carcass characteristics, and wholesale cut yield of hair-breed ewe lambs consuming feedlot diets under moderate environmental conditions.Crossref | GoogleScholarGoogle Scholar | 21764837PubMed |

Bessa RJB, Lourenco M, Portugal PV, Santos-Silva J (2008) Effects of previous diet and duration of soybean oil supplementation on light lambs carcass composition, meat quality, and fatty acid composition. Meat Science 80, 1100–1105.
Effects of previous diet and duration of soybean oil supplementation on light lambs carcass composition, meat quality, and fatty acid composition.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXhtFOqsrnE&md5=386fa045237557640a21184d793de366CAS |

Bligh EG, Dyer WJ (1959) A rapid method of total lipids extraction and purification. Canadian Journal of Biochemistry and Physiology 37, 911–917.
A rapid method of total lipids extraction and purification.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaG1MXhtVSgt70%3D&md5=c1d746a6458016be924540a5fe831f9aCAS | 13671378PubMed |

Boles JA, Kott RW, Hatfield PG, Bergman JW, Flynn CR (2005) Supplemental safflower oil affects the fatty acid profile, including conjugated linoleic acid, of lamb. Journal of Animal Science 83, 2175–2181.

Brand TS, Genis MP, Hoffman LC, van de Vyver WFJ, Swart R, Jordaan GF (2013) The effect of dietary energy and the inclusion of a β-adrenergic agonist in the diet on the meat quality of feedlot lambs. South African Journal of Animal Science 43, S140–S145.
The effect of dietary energy and the inclusion of a β-adrenergic agonist in the diet on the meat quality of feedlot lambs.Crossref | GoogleScholarGoogle Scholar |

Byers FM, Schelling GT (1993) Los lipidos en la nutrición de los rumiantes [The lipids in the nutrition of ruminants]. In ‘El ruminante fisiología digestiva y nutrición [The ruminant digestive physiology and nutrition]’. (Ed. DC Church) pp. 339–356. (Ed. Acribia: Zaragoza, España)

Carr SN, Rincker PJ, Killefer J, Baker DH, Ellis M, McKeith FK (2005) Effects of different cereal grains and ractopamine hydrochloride onperformance, carcass characteristics, and fat quality in late-finishingpigs. Journal of Animal Science 83, 223–230.

Cassens RG, Demeyer D, Eikelenboom G, Honikel KO, Johanson G, Nielsen T, Renerre M, Richardson I, Sakata R (1995) Recommendations of reference methods for assessment of meat colour. In ‘Proceedings of the 41st annual international congress of meat science and technology (ICOMST), San Antonio, Texas, USA, 20–25 August’. Vol. II. pp. 410–411.

Choat WT, Paterson JA, Rainey RM, King MC, Smith GC, Belk KE, Lipsey RJ (2006) The effects of cattle sex on carcass characteristics, and longissimus muscle characteristics. Journal of Animal Science 84, 1820–1826.
The effects of cattle sex on carcass characteristics, and longissimus muscle characteristics.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28Xmt1aqt7o%3D&md5=e7740e495524b13582162bd041331466CAS | 16775066PubMed |

Choi CB, Jung KK, Chung KY, Yang BC, Chin KB, Suh SW, Oh DH, Jeon MS, Baek KH, Lee SO, Kim SI, Lee YH, Yates DA, Hutcheson JP, Johnson BJ (2013) Administration of zilpaterol hydrochloride alters feedlot performance, carcass characteristics, muscle, and fat profiling in finishing Hanwoo steers. Livestock Science 157, 435–441.
Administration of zilpaterol hydrochloride alters feedlot performance, carcass characteristics, muscle, and fat profiling in finishing Hanwoo steers.Crossref | GoogleScholarGoogle Scholar |

Claus HL, Dikeman ME, Murray L, Brooks JC, Shook J, Hilton GG, Lawrence TE, Mehaffey JM, Johnson BJ, Allen DM, Streeter MN, Nichols WT, Hutcheson JP, Yates DA, Miller MF, Hunt MC, Killefer J (2010) Effects of supplementing feedlot steers and heifers with zilpaterol hydrochloride on Warner–Bratzler shear force interrelationships of steer and heifer longissimus lumborum and heifer triceps brachii and gluteus medius muscles aged for 7, 14 and 21 d. Meat Science 85, 347–355.
Effects of supplementing feedlot steers and heifers with zilpaterol hydrochloride on Warner–Bratzler shear force interrelationships of steer and heifer longissimus lumborum and heifer triceps brachii and gluteus medius muscles aged for 7, 14 and 21 d.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXjvFCjsrk%3D&md5=788d57539e684e1460ca6d515b0dfaa5CAS | 20374910PubMed |

Crome PK, McKeith FK, Carr TR, Jones DJ, Mowrey DH, Cannon JE (1996) Effect of ractopamine on growth performance, carcass composition and cutting yields of pigs slaughtered at 107 and 125 kilograms. Journal of Animal Science 74, 709–716.

Dávila-Ramírez JL, Avendaño-Reyes L, Macias-Cruz U, Torrentera-Oliveraa NG, Zamorano-Garcia L, Peña-Ramos A, Gonzalez-Rios H (2013) Effects of zilpaterol hydrochloride and soybean oil supplementation on physicochemical and sensory characteristics of meat from hair lambs. Journal of Small Ruminant Research 114, 253–257.
Effects of zilpaterol hydrochloride and soybean oil supplementation on physicochemical and sensory characteristics of meat from hair lambs.Crossref | GoogleScholarGoogle Scholar |

Department of Health (1994) ‘Report on health and social subjects No. 46, nutritional aspects of cardiovascular disease.’ (HMSO: London)

Dervish E, Serrano C, Joy M, Serrano M, Rodellar C, Calvo JH (2010) Effect of the feeding system on fatty acid composition, expression of the D9 desaturase, peroxisome proliferators-activated receptor alpha, gamma, and sterol regulatory element binding protein 1 genes in the semitendinous muscle of light lambs of the Rasa Aragonesa breed. BMC Veterinary Research 40, 3–11.

Dikeman ME (2007) Effects of metabolic modifiers on carcass traits and meat quality. Meat Science 77, 121–135.
Effects of metabolic modifiers on carcass traits and meat quality.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXmvVOgsbY%3D&md5=321a41252544343801de17b4de0b9305CAS | 22061403PubMed |

Dinh TTN, Blanton JRJR, Riley DG, Chase CC, Coleman SW, Phillips WA, Brooks JC, Miller MF, Thompson LD (2010) Intramuscular fat and fatty acid composition of longissimus muscle from divergent pure breeds of cattle. Journal of Animal Science 88, 756–766.
Intramuscular fat and fatty acid composition of longissimus muscle from divergent pure breeds of cattle.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXktVOqtbw%3D&md5=ce78d48008a7054a84bea2547622ae96CAS |

Elmore JS, Warren HE, Mottram DS, Scollan ND, Enser M, Richardson RI, Wood JD (2004) A comparison of the aroma volatiles andfatty acid compositions of grilled beef muscle from Aberdeen Angusand Holstein-Friesian steers fed diets based on silage or concentrates. Meat Science 68, 27–33.
A comparison of the aroma volatiles andfatty acid compositions of grilled beef muscle from Aberdeen Angusand Holstein-Friesian steers fed diets based on silage or concentrates.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2cXjtl2lsLc%3D&md5=d032c38c2c8e116454f4cc2887a7c2e4CAS | 22062004PubMed |

Fernandes SR, Salgado JA, Santanna-Natel A, Gomes-Monteiro AL, Prado OR, Simionato de Barros C, Machado-Fernandes MA (2014) Performance, carcass traits and costs of Suffolk lambs finishing systems with early weaning and controlled suckling. Revista Ceres 61, 184–192.
Performance, carcass traits and costs of Suffolk lambs finishing systems with early weaning and controlled suckling.Crossref | GoogleScholarGoogle Scholar |

Fritsche S, Rumsey TS, Yurawecz MP, Ku Y, Fritscher J (2001) Influence of growth promoting implants on fatty acid composition including conjugated linoleico acid isomers in beef fat. European Food Research and Technology 212, 621–629.
Influence of growth promoting implants on fatty acid composition including conjugated linoleico acid isomers in beef fat.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXltVyltbg%3D&md5=0dc885eb82d1f478630d2b9ac90e5b63CAS |

Geesink GH, Smulders FJM, Van Laack HLJM, Wensing TH, Breuking HJ (1993) Effects on meat quality of the use of clenbuterol in veal calves. Journal of Animal Science 71, 1161–1170.

Gibb DJ, Owens FN, Mir PS, Mir Z, Ivan M, McAllister TA (2004) Value of sunflower seed in finishing diets of feedlot cattle. Journal of Animal Science 82, 2679–2692.

Goering HK, Van Soest PJ (1970) Forage fiber analyses (apparatus, reagents, procedures, and some applications). Agric. Handbook No. 379. (ARS-USDA: Washington, DC)

Harfoot CG, Hazlewood GP (1997) Lipid metabolism in the rumen. In ‘The rumen microbial ecosystem’. (Ed. PN Hobson) pp. 382–426. (Elsevier: London)

Hilton GG, Montgomery JL, Krehbiel CR, Cranston J, Yates DA, Hutcheson JP, Nichols WT, Streeter M, Blanton JR, Miller MF (2009) Dietary zilpaterol hydrochloride. IV. Carcass cutability and meatpalatability of beef cattle with and without monensin and tylosin. Journal of Animal Science 87, 1394–1406.
Dietary zilpaterol hydrochloride. IV. Carcass cutability and meatpalatability of beef cattle with and without monensin and tylosin.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXjsFKisL4%3D&md5=2c97cbb4d01f4a0fabf2d139c161d12fCAS | 19028853PubMed |

Ibrahim RM, Marchelo JA, Duff GC (2006) Effects of implanting beef steers with zeranol on fatty acid composition of subcutaneous and intramuscular fat. Professor Animal Science 22, 301–306.
Effects of implanting beef steers with zeranol on fatty acid composition of subcutaneous and intramuscular fat.Crossref | GoogleScholarGoogle Scholar |

Jenkins T, Thies EJ, Fotouhi N (1994) Dietary soybean oil changes lipolytic rate and composition of fatty acids in plasma membranes of ovine adipocytes. Nutrient metabolism. The Journal of Nutrition 124, 566–570.

Khliji S, van de Ven RJ, 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=c0d9a044f1e463a3484ddf8675825c71CAS | 20374889PubMed |

Kim SC, Adesogan AT, Badinga L, Staples CR (2007) Effects of dietary n-6: n-3 fatty acid ratio on feed intake, digestibility, and fatty acid profiles of the ruminal contents, liver, and muscle of growing lambs. Journal of Animal Science 85, 706–716.
Effects of dietary n-6: n-3 fatty acid ratio on feed intake, digestibility, and fatty acid profiles of the ruminal contents, liver, and muscle of growing lambs.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXit1WktLo%3D&md5=2b97676c8489fb412392c83587e36488CAS | 17121972PubMed |

Kirton AH, Carter AH, Clarke JN, Sinclair DP, Mercer GJK, Duganzich DM (1995) A comparison between 15 ram breeds for export lamb production 1. Live weights, body composition, carcass measurements and composition. New Zealand Journal of Agricultural Research 38, 347–360.
A comparison between 15 ram breeds for export lamb production 1. Live weights, body composition, carcass measurements and composition.Crossref | GoogleScholarGoogle Scholar |

Lee HC, Dupont J (1991) Effects of dietary fatty acids on the activity of glucose transport in adipocytes. The Journal of Nutritional Biochemistry 2, 38–43.

Leheska JM, Montgomery JL, Krehbiel CR, Yates DA, Hutcheson JP, Nichols WT, Streeter MJR, Blanton JR, Miller MF (2009) Dietary zilpaterol hydrochloride. II. Carcass composition and meat palatability of beef cattle. Journal of Animal Science 87, 1384–1393.
Dietary zilpaterol hydrochloride. II. Carcass composition and meat palatability of beef cattle.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXjsFKis7c%3D&md5=10e6ab2de9d0882f67a1afdb5e5f68bfCAS | 18849379PubMed |

López-Carlos MA, Ramírez RG, Aguilera-Soto JI, Rodríguez H, Aréchiga CF, Méndez-Llorente F, Chavez JJ, Medina CA, Silva JA (2012) Effect of the administration program of 2 β-adrenergic agonists on growth performance and carcass characteristics of feedlot ram lambs. Journal of Animal Science 90, 1521–1531.
Effect of the administration program of 2 β-adrenergic agonists on growth performance and carcass characteristics of feedlot ram lambs.Crossref | GoogleScholarGoogle Scholar | 22573838PubMed |

Macías-Cruz U, Álvarez-Valenzuela FD, Torrentera-Olivera NG, Velázquez-Morales JV, Correa-Calderón A, Avendaño-Reyes L (2010) Effect of zilpaterol hydrochloride on feedlot performance and carcass characteristics of ewe lambs during heat-stress conditions. Animal Production Science 50, 983–989.
Effect of zilpaterol hydrochloride on feedlot performance and carcass characteristics of ewe lambs during heat-stress conditions.Crossref | GoogleScholarGoogle Scholar |

McNiven MA, Duynisveld J, Charmley E, Mitchell A (2004) Processing of soybean affects meat fatty acid composition and lipid peroxidation in beef cattle. Animal Feed Science and Technology 116, 175–184.
Processing of soybean affects meat fatty acid composition and lipid peroxidation in beef cattle.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2cXnsFSiu7s%3D&md5=9e88c54627b646d63df53162292aa274CAS |

McKeith FK, Stites CR, Singh SD, Bechtel PJ, Jones DJ (1988) Palatability and visual characteristics of hams and loin chops from swine fed ractopamine hydrochloride. Journal of Animal Science 66, 306

Mersmann HJ (1998) Overview of the effects of beta-adrenergic receptor agonists on animal growth including mechanisms of action. Journal of Animal Science 76, 160–172.

Mersmann HJ (2002) Beta adrenergic receptor modulation of adipocytemetabolism and growth. Journal of Animal Science 80, E24–E29.

Mir PS, Mir Z, McAllister TA, Zaman S, Morgan-Jones SD, He ML, Aalhus JL, Jeremiah LE, Goonewardene LA, Weselake RJ, Mir Z (2003) Effect of sunflower oil and vitamin E on beef cattle performance and quality, composition and oxidative stability of beef. Canadian Journal of Animal Science 83, 53–66.
Effect of sunflower oil and vitamin E on beef cattle performance and quality, composition and oxidative stability of beef.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3sXktVagsL0%3D&md5=2ce6cda9f3970a995a45d2d9d8ed31a6CAS |

Najafi MH, Zeinoaldini S, Ganjkhanlou M, Mohammadi H, Hopkins DL, Ponnampalam EN (2012) Performance, carcass traits, muscle fatty acid composition and meat sensory properties of male Mahabadi goad kids fed palm oil, soybean oil or fish oil. Meat Science 92, 848–854.
Performance, carcass traits, muscle fatty acid composition and meat sensory properties of male Mahabadi goad kids fed palm oil, soybean oil or fish oil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38Xht1GlsrnL&md5=567488b352ed6932d40a1a5a19a2f672CAS | 22901986PubMed |

National Research Council (NRC) (1996) ‘Nutrient requirements of beef cattle.’ 7th edn. (National Academy Press: Washington, DC)

Nicolas C, Lacasa D, Giudicelli Y, Demarne Y, Agli B, Lecourtier MJ, Lhuillery C (1991) Dietary (n-6) polyunsaturated fatty acids affect β-adrenergic receptor binding and adenylate cyclase activity in pig adipocyte plasma membrane. The Journal of Nutrition 121, 1179–1186.

Norma Official Mexicana-NOM-033-ZOO (1995) Sacrificio humanitario delos animales domésticos y silvestres. SAGARPA, México, DF.

Norma Oficial Mexicana-NOM-EM-015-ZOO (2002) Especificaciones técnicas para el uso de beta-agonistas en los animales. SAGARPA. México, D.F.

O’Neill HA (2001) The effect of zilpaterol hydrochloride on dietary N-Requirements and the quality and nutritional value of meat components. MS Thesis, University of Pretoria, Pretoria, South Africa.

Park PW, Goins RE (1994) In situ preparation of fatty acid methyl esters for analysis of fatty composition in foods. Journal of Food Science 59, 1262–1266.
In situ preparation of fatty acid methyl esters for analysis of fatty composition in foods.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK2MXislCisLg%3D&md5=0514720b73653dc6a5d4b1332f9857faCAS |

Ponnampalam EN, Trout GR, Sinclair AJ, Egan AR, Leury BJ (2001a) Comparison of the color stability and lipid oxidative stability of fresh and vacuum packaged lamb muscle containing elevate omega-3 and omega-6 fatty acid levels from dietary manipulation. Meat Science 58, 151–161.
Comparison of the color stability and lipid oxidative stability of fresh and vacuum packaged lamb muscle containing elevate omega-3 and omega-6 fatty acid levels from dietary manipulation.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXit1Wgurk%3D&md5=7cb9c2e8806c2f35a19735b715ddd050CAS | 22062110PubMed |

Ponnampalam EN, Sinclair AJ, Egan AR, Blakeley SJ, Li D, Leury BJ (2001b) Effect of dietary modification of muscle long-chain n-3 fatty acid on plasma insulin and lipid metabolites, carcass traits, and fat deposition in lambs. Journal of Animal Science 79, 895–903.

Ponnampalam EN, Sinclair AJ, Hosking BJ, Egan AR (2002) Effects of dietary lipid type on muscle fatty acid composition, carcass leaness, and meat toughness in lambs. Journal of Animal Science 80, 628–636.

Radunz AE, Wickersham LA, Loerch SC, Fluharty FL, Reynolds K, Zerby HN (2009) Effects of dietary polyunsaturated fatty acid supplementation on fatty acid composition in muscle and subcutaneous adipose tissue of lambs. Journal of Animal Science 87, 4082–4091.
Effects of dietary polyunsaturated fatty acid supplementation on fatty acid composition in muscle and subcutaneous adipose tissue of lambs.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXhsVOhs7fE&md5=1cfbfa3b9821321ab1bd996ecbeb9b50CAS | 19717771PubMed |

Santos VAC, Silva AO, Cardoso JVF, Silvestre AJD, Silva SR, Martins C, Azevedo JMT (2007) Genotype and sex effects on carcass and meat quality of suckling kids protected by the PGI ‘Cabrito de Barroso’. Meat Science 75, 725–736.
Genotype and sex effects on carcass and meat quality of suckling kids protected by the PGI ‘Cabrito de Barroso’.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BC3Mbns1aksA%3D%3D&md5=2cee83072ebdca9a9b0bfb10fee2a0afCAS |

Santos-Silva J, Mendes I, Portugal P, Bessa R (2004) Effect of particle size and soybean oil supplementation on growth performance, carcassand meat quality and fatty acid composition of intramuscular lipidsof lambs. Livestock Production Science 90, 79–88.
Effect of particle size and soybean oil supplementation on growth performance, carcassand meat quality and fatty acid composition of intramuscular lipidsof lambs.Crossref | GoogleScholarGoogle Scholar |

Simitzis PE, Deligeorgis SG, Bizelis JA, Dardamani A, Theodosiou I, Feggeros K (2008) Effect of dietary oregano oil supplementation on lamb meat characteristics. Meat Science 79, 217–223.
Effect of dietary oregano oil supplementation on lamb meat characteristics.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXjs1Kjsrs%3D&md5=af27cd68e38d893195fe7217eaaa0a69CAS | 22062749PubMed |

Sutton DS, Ellis M, Lan Y, McKeith FK, Wilson ER (1997) Influence of slaughter weight and stress gene genotype on the water-holdingcapacity and protein gel characteristics of three porcine muscles. Meat Science 46, 173–180.
Influence of slaughter weight and stress gene genotype on the water-holdingcapacity and protein gel characteristics of three porcine muscles.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BC3MbnsVKjtQ%3D%3D&md5=3d32bd79b030f171b96371d55df7d00fCAS | 22062040PubMed |

Van Soest PJ, Robertson JB, Lewis BA (1991) Methods for dietary fiber, neutral detergent fiber, and non starch polysaccharides in relation to animal nutrition. Journal of Dairy Science 74, 3583–3597.

Walker DK, Titgemeyer EC, Baxa TJ, Chung KY, Johnson DE, Laudert SB, Johnson BJ (2010) Effects of ractopamine and sex on serum metabolites and skeletal muscle gene expression in finishing steers and heifers. Journal of Animal Science 88, 1349–1357.

Vanderveen JE (1996) Dietary recommendation for lipids and measure designed to facilitate implementation. In ‘Food lipids and health’. (Eds ER McDonald, DB Min) pp. 1–18. (Marcel Dekker, Inc.: New York, NY)

Wood JD, Enser M, Fisher AV, Nute GR, Sheard PR, Richardson RI, Hughes SI, Whittington FM (2008) Fat deposition, fatty acid composition and meat quality: a review. Meat Science 78, 343–358.
Fat deposition, fatty acid composition and meat quality: a review.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXhsVCls7s%3D&md5=b7059b86baab70fe2cf37aa0ec8069c0CAS | 22062452PubMed |