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Partial replacement of poly- with monounsaturated fatty acids and vitamin E supplementation in pig diets: effect on fatty acid composition of subcutaneous and intramuscular fat and on fat and lean firmness

Published online by Cambridge University Press:  18 August 2016

C. J. Lopez-Bote ,
B. Isabel  and
A. Daza
B. Isabel
Affiliation:
Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
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Abstract

The effect of partial replacement of poly- (PUFA) with monounsaturated (MUFA) fatty acids in pig diets on fatty acid composition of subcutaneous and intramuscular fat and on fat and lean firmness was studied. No effect of dietary fat was observed on total saturated fatty acid concentration in any of the backfat layers or intramuscular lipid fractions. No significant effect of dietary fat was observed for the MUFA concentration in the outer layer, but a marked effect was evident for the inner layer (P < 0·001). A linear effect of dietary MUFA was observed for MUFA (P < 0·001) and PUFA (P < 0·001) in polar lipids. No significant effect of dietary treatment was observed on total concentration of n-3 fatty acids in any lipid location but a marked effect was observed for total n-6 fatty acid concentration. The response of pig fatty acid n-6 concentration was different depending on the lipid location. The neutral lipid fraction showed significantly lower n-6/n-3 fatty acid ratio than the subcutaneous fat. Intramuscular polar lipids showed no significant response of n-6/n-3 ratio. A linear effect of dietary MUFA concentration was observed on the melting point on the inner backfat layer (MP = 34·4 (s.e. 2·51) + 0·15 (s.e. 0·07) ✕ dietary MUFA (g/kg dry matter) (R2 = 0·24, P < 0·05)), indicating that the partial substitution of dietary PUFA by MUFA produced a fat of higher consistency. No response of the melting point of the outer layer to dietary treatment was observed. A marked effect of dietary fat was shown for backfat hardness (P < 0·001), gumminess (P < 0·001) and chewiness (P < 0·001). No effect of dietary fat was observed on the rheological properties of longissimus lumborum muscle.

Keywords

fatfatty acidsmelting pointmonoenoic fatty acidspigs.
Type
Research Article
Information
Animal Science , Volume 75 , Issue 3 , December 2002 , pp. 349 - 358
Copyright
Copyright © British Society of Animal Science 2002

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References

Asghar, A., Gray, J. I., Booren, A. M., Gomaa, E. A., Abouzied, M. M., Miller, E. R. and Buckley, D. J. 1991. Effects of supranutritional dietary vitamin E levels on subcellular deposition of α-tocopherol in muscle and on pork quality. Journal of the Science of Food and Agriculture 57: 31–41.CrossRefGoogle Scholar
Association of Official Analytical Chemists. 1990. Official methods of analysis. AOAC, Arlington, VA.Google Scholar
Bligh, E.G. and Dyer, W. J. 1959. A rapid method of total lipid extraction and purification. Canadian Journal of Biochemistry and Physiology 37: 911–917.CrossRefGoogle ScholarPubMed
Brooks, C. C. 1971. Fatty acid composition of pork lipids as affected by basal diet, fat source and fat level. Journal of Animal Science 33: 1224–1231.CrossRefGoogle ScholarPubMed
Cameron, N. D., Enser, M., Nute, G. R., Whittington, F. M., Penman, J. C., Frisken, A. C., Perry, A. M. and Wood, J. D. 2000. Genotype with nutrition interaction on fatty acid composition of intramuscular fat and the relationship with flavour of pig meat. Meat Science 55: 187–195.CrossRefGoogle ScholarPubMed
Ellis, N. R. and Isbell, H. S. 1926. Soft pork studies. II. The influence of the character of the ration upon the composition of the body fat of hogs. Journal of Biological Chemistry 69: 219–238.Google Scholar
Enser, M. 1984. The chemistry, biochemistry and nutritional importance of animal fats. In Fats in animal nutrition (ed. Wiseman, J.), pp. 23–52. Butterworths, London.CrossRefGoogle Scholar
Gibson, R. A., McMurchie, E. J., Charnock, J. S. and Kneebone, B. M. 1984. Homeostatic control of membrane fatty acid composition in rat after dietary lipid treatment. Lipids 19: 942–947.CrossRefGoogle ScholarPubMed
Grundy, S. M. 1986. Comparison of monounsaturated fatty acids and carbohydrates for lowering plasma cholesterol. New England Journal of Medecine 314: 745–748.CrossRefGoogle ScholarPubMed
Lin, C. F., Gray, J. I., Ashgar, A., Buckley, D. J., Booren, A. M. and Flegal, C. J. 1989. Effect of dietary oils and α-tocopherol supplementation on lipid peroxidation in broiler meat. Journal of Food Science 54: 1457–1460.CrossRefGoogle Scholar
Lopez-Bote, C., Rey, A., Ruiz, J., Isabel, B. and Sanz Arias, R. 1997a. Effect of feeding diets high in monounsaturated fatty acids and α-tocopheryl acetate to rabbits on resulting carcass fatty acid profile and lipid oxidation. Animal Science 64: 177–186.Google Scholar
Lopez-Bote, C. J. 2000. Dietary treatment and quality characteristics of Mediterranean meat products. In Antioxidants in muscle foods: nutritional strategies to improve quality (ed. C., E. Decker Faustman, C. and LopezBote, C. J.), pp. 345–366. Wiley Interscience, New York.Google Scholar
Lopez-Bote, C.J, Sanz, M., Isabel, B., Ayala, P. P. and Flores, A. 1997b. Effect of dietary lard on peformance, fatty acid composition and susceptibility to lipid peroxidation in growing-finishing female and entire male pigs. Canadian Journal of Animal Science 77: 301–306.CrossRefGoogle Scholar
Marchello, M. J., Cook, N. K., Slanger, W. D., Johnson, V. K., Fischer, A. G. and Dinusson, W. E. 1983. Fatty acid composition of lean and fat tissue of swine fed various dietary levels of sunflower seed. Journal of Food Science 48: 1331–1334.Google Scholar
Marmer, W. N. and Maxwell, R. J. 1981. Dry column method for the quantitative extraction and simultaneous class separation of lipids from muscle tissue. Lipids 16: 365–371.Google Scholar
Miller, M. F., Shackelford, S.D., Hayden, K. D. and Reagan, J. O. 1990. Determination of the alteration in fatty acid profiles, sensory characteristics and carcass traits of swine fed elevated levels of monounsaturated fats in the diet. Journal of Animal Science 68: 1624–1631.Google Scholar
Monahan, F. J., Buckley, D. J., Morrisey, P. A., Lynch, P. B. and Gray, J. I. 1992. Influence of dietary fat and α-tocopherol supplementation on lipid oxidation in pork. Meat Science 31: 229–241.CrossRefGoogle ScholarPubMed
Myer, R. O., Johnson, D. D., Knauff, D. A., Gorbet, D. W., Brendemuhl, J. H. and Walker, W. R. 1992a. Effect of feeding high-oleic-acid peanuts to growing-finishing swine on resulting carcass fatty acid profile and on carcass and meat quality characteristics. Journal of Animal Science 70: 3734–3741.CrossRefGoogle ScholarPubMed
Myer, R. O., Lamkey, J. W., Walker, W. R., Brendemuhl, J. H. and Combs, G. E. 1992b. Performance and carcass characteristics of swine when fed diets containing canola oil and added copper to alter the unsaturated: saturated ratio of pork fat. Journal of Animal Science 70: 1417–1423.CrossRefGoogle ScholarPubMed
Okayasu, T., Kameda, K., Ono, T. and Imai, Y. 1977. Effect of dietary vitamin B2 and vitamin E on the delta-9-desaturase and catalase activities in rat liver microsomes. Biochimica et Biophysica Acta 489: 389–402.Google ScholarPubMed
Rey, A. I., Kerry, J. P., Lynch, P. B., Lopez-Bote, C.J, Buckley, D. J. and Morrissey, P. A. 2001. Effect of dietary oils and α-tocopheryl acetate supplementation on lipid (TBARS) and cholesterol oxidation in cooked pork. Journal of Animal Science 79: 1201–1208.Google Scholar
St John, L. C., Young, C. R., Knabe, D. A., Thompson, L. D., Schelling, G. T., Grundy, S. M. and Smith, S. B. 1987. Fatty acid profile and sensory and carcass traits of tissues from steers and swine fed an elevated monounsaturated fat diet. Journal of Animal Science 64: 1441–1447.Google Scholar
Statistical Analysis Systems Institute. 1999. SAS user’s guide: statistics. Statistical Analysis Systems Institute Inc., Cary, NC.Google Scholar
Sukhija, P. S. and Palmquist, D. L. 1988. Rapid method for determination of total fatty acid content and composition of feedstuffs and feces. Journal of Agicultural and Food Chemistry 36: 1202–1206.CrossRefGoogle Scholar
Wenk, C., Leonhardt, M. and Scheeder, R. L. 2000. Monogastric nutrition and potential for improving muscle quality. In Antioxidants in muscle foods: nutritional strategies to improve quality (ed. E. Decker, , Faustman, C. and Lopez Bote, C. J.), pp. 199–228. Wiley Interscience, New York.Google Scholar
Whittington, F. M., Prescott, N. J., Wood, J. D. and Enser, M. 1986. The effect of dietary linoleic acid on the firmness of backfat in pigs of 85 kg live weight. Journal of the Science of Food and Agriculture 37: 753–761.Google Scholar
Wood, J. D. 1984. Fat deposition and the quality of fat tissue in meat animals. In Fats in animal nutrition (ed. Wiseman, J.), pp. 407–436. Butterworths, London.CrossRefGoogle Scholar
Wood, J. D. and Enser, M. 1997. Factors influencing fatty acids in meat and the role of antioxidants in improving meat quality. British Journal of Nutrition 78: S49-S60.CrossRefGoogle ScholarPubMed
Wood, J. D., Enser, M. B., MacFie, H. J. H., Smith, W. C., Chadwick, J. P., Ellis, M. and Laird, R. 1978. Fatty acid composition of backfat in Large White pigs selected for low backfat thickness. Meat Science 2: 289–300.Google Scholar