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Meat quality of Large White pig genotypes selected for components of efficient lean growth rate

Published online by Cambridge University Press:  18 August 2016

N. D. Cameron ,
G. R. Nute ,
S. N. Brown-a2 ,
M. Enser  and
J. D. Wood
N. D. Cameron
Affiliation:
Roslin Institute (Edinburgh), Roślin, Midlothian EH25 9PS
G. R. Nute
Affiliation:
Division of Food Animal Science, School of Veterinary Studies, University of Bristol, Bristol BS40 5DU
M. Enser
Affiliation:
Division of Food Animal Science, School of Veterinary Studies, University of Bristol, Bristol BS40 5DU
J. D. Wood
Affiliation:
Division of Food Animal Science, School of Veterinary Studies, University of Bristol, Bristol BS40 5DU
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Abstract

Responses in carcass composition and meat quality after seven generations of selection for components of lean growth rate were examined in a population of Large White pigs. There were four selection groups in the study, with divergent selection for lean growth rate on ad libitum (LGA) or restricted (LGS) feeding regimes, lean food conversion ratio (LFC) and daily food intake (DFI). In generations six and seven, two offspring from each of 10 sires, within each selection line, were to be allocated for half-carcass dissection and measurement of meat quality. There were 320 animals in the study, with 40 animals from each of the high and low selection lines and, within each selection line, two offspring per sire.

Responses in carcass composition were similar in the three selection groups given food ad libitum, but rates of lean and fat growth rate differed between selection lines. Intramuscular fat content was reduced with selection for high LGA and high LFC but was increased with selection for low DFI (-1·7 and -3·2 v. 2·7 (s.e.d. 0·7) mg/g), which was unexpected given the higher carcass fat content of the low DFI line, relative to the high line (249 v. 190 (s.e.d. 7) g/kg). Muscle colour was darker, as measured by trained sensory panel assessment, in selection lines which reduced the rate of fat deposition to achieve a leaner carcass (high LFC and low DFI) but there was no response in muscle colour with selection for LGA (0·4 and 0·3 v. 0·0 (s.e.d. 0·1)). Responses in muscle shear force (5·3 v. 4·4 (s.e.d. 0·4) kg) and flavour liking (4·0 v. 4·3 (s.e.d. 0·12)) were limited to the LGA and LFC selection groups, respectively. There were no significant responses in muscle moisture content, muscle pH or myofibrillar fragmentation index, nor were there any responses in meat quality with selection on LGS. Therefore, decreasing the rate of fat deposition was associated with darker meat and increasing the rate of lean growth was associated with higher shear force. There were selection strategy specific responses in the fatty acid composition of intramuscular fat, which may have contributed to the responses in eating quality.

In general, responses in meat quality were small, such that incorporation of meat quality traits in selection objectives, which are primarily focused on increasing the efficiency of lean meat production, may not be necessary. However, it would be pertinent to evaluate periodically genotypes of breeding companies for muscle quality traits.

Keywords

carcass compositionlean growthmeat qualitypigsselection
Type
Research Article
Information
Animal Science , Volume 68 , Issue 1 , February 1999 , pp. 115 - 127
Copyright
Copyright © British Society of Animal Science 1999

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References

Cameron, N. D. 1990. Genetic and phenotype parameters for carcass traits, meat and eating quality traits in pigs. Livestock Production Science 26: 119–135.CrossRefGoogle Scholar
Cameron, N. D. 1993. Selection for meat quality: objectives and criteria. Pig News and Information 14: 161N–168N.Google Scholar
Cameron, N. D. 1994. Selection for components of efficient lean growth rate in pigs. 1. Selection pressure applied and direct responses in a Large White herd. Animal Production 59: 251–262.Google Scholar
Cameron, N. D. and Curran, M. K. 1995. Responses in carcass composition to divergent selection for components of efficient lean growth rate in pigs. Animal Science 61: 347–359.CrossRefGoogle Scholar
Cameron, N. D., Curran, M. K. and Kerr, J. C. 1994. Selection for components of efficient lean growth rate in pigs. 3. Responses to selection with a restricted feeding regime. Animal Production 59: 271–279.Google Scholar
Cameron, N. D. and Enser, M. B. 1991. Fatty acid composition of lipid in longissimus dorsi muscle of Duroc and British Landrace pigs and its relationship with eating quality. Meat Science 29: 295–307.CrossRefGoogle ScholarPubMed
Cleveland, E. R., Johnson, R. K. and Mandigo, R. W. 1983. Index selection and feed intake restriction in swine. 1. Effect on rate and composition of growth. Journal of Animal Science 56: 560–569.CrossRefGoogle Scholar
Cliplef, R. L. and McKay, R. M. 1993. Carcass quality characteristics of swine selected for reduced backfat thickness and increased growth rate. Canadian Journal of Animal Science 73: 483–494.CrossRefGoogle Scholar
Culler, R. D., Parrish, F. C., Smith, G. C. and Cross, H. R. 1978. Relationship of myofibril fragmentation index to certain chemical, physical and sensory characteristics of bovine longissimus muscle. Journal of Food Science 43: 1177–1180.CrossRefGoogle Scholar
Cuthbertson, A. 1968. PIDA dissection techniques. Proceedings of the symposium on methods of carcass evaluation, European Association for Animal Production, Dublin.Google Scholar
Ellis, M., Smith, W. C., Henderson, R., Whittemore, C. T. and Laird, R. 1983. Comparative performance and body composition of control and selection line Large White pigs. 2. Feeding to appetite for a fixed time. Animal Production 36: 407–413.Google Scholar
Fowler, V. R., Bichard, M. and Pease, A. 1976. Objectives in pig breeding. Animal Production 23: 365–387.Google Scholar
Fredeen, H. T. and Mikami, H. 1986. Mass selection in a pig population: correlated changes in carcass merit. Journal of Animal Science 62: 1546–1554.CrossRefGoogle Scholar
Genstat 5 Committee. 1989. Genstat 5 reference manual. Clarendon Press, Oxford.Google Scholar
Hovenier, R., Kanis, E., Asseldonk, Th. van and Westerink, N. G. 1992. Genetic parameters of pig meat quality traits in a halothane negative population. Livestock Production Science 32: 309–321.CrossRefGoogle Scholar
Hovenier, R., Kanis, E., Brascamp, E. W. and Knap, P. W. 1994. Including meat quality in pig breeding programmes. Proceedings of the fifth world congress on genetics applied to livestock production, Guelph, vol. 19, pp. 465–468.Google Scholar
Kempster, A. J., Dilworth, A. W., Evans, D. G. and Fisher, K. D. 1986. The effects of fat thickness and sex on pig meat quality with special reference to the problems associated with overleanness. 1. Butcher and consumer panel results. Animal Production 43: 517–533.Google Scholar
Lo, L. L., McLaren, D. G., McKeith, F. K., Fernando, R. L. and Novakofski, J. 1992. Genetic analyses of growth, realtime ultrasound, carcass and pork quality traits in Duroc and Landrace pigs. 2. Heritabilities and correlations. Journal of Animal Science 70: 2387–2396.CrossRefGoogle ScholarPubMed
MacDougall, D. B. and Rhodes, D. N. 1972. Characteristics of the appearance of meat. 3. Studies on the colour of meat from young bulls. Journal of the Science of Food and Agriculture 23: 637–647.CrossRefGoogle Scholar
McPhee, C. P. and Trout, G. R. 1995. The effects of selection for lean growth and the halothane alíele on carcass and meat quality of pigs transported long and short distances to slaughter. Livestock Production Science 42: 55–62.CrossRefGoogle Scholar
Meat and Livestock Commission. 1993. A blueprint for lean and tender pork. Meat and Livestock Commission, Milton Keynes.Google Scholar
Meyer, K. 1985. Maximum likelihood estimation of variance components for a multivariate mixed model with equal design matrices. Biometrics 41: 153–165.CrossRefGoogle ScholarPubMed
Patterson, H. D. and Thompson, R. 1971. Recovery of interblock information when block sizes are unequal. Biometrika 58: 545–554.CrossRefGoogle Scholar
Rao, C. R. 1973. Linear statistical inference and its applications, 2nd edition, Wiley, New York, NY.CrossRefGoogle Scholar
Thompson, R. 1976. The estimation of maternal genetic variances. Biometrics 32: 903–917.CrossRefGoogle ScholarPubMed
Vries, A. G. de, Wal, P. G. van der, Long, T., Eikelenboom, G. and Merks, J. W. M. 1994. Genetic parameters of pork quality and production traits in Yorkshire populations. Livestock Production Science 40: 277–289.CrossRefGoogle Scholar
Warriss, P. D. 1979. The extraction of haem pigments from fresh meat. Journal of Food Technology 14: 75–80.CrossRefGoogle 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 Food Science and Agriculture 37: 753–761.CrossRefGoogle Scholar
Wood, J. D., Brown, S. N., Nute, G. R., Whittington, F. M., Perry, A. M., Johnson, S. P. and Enser, M. 1996. Effects of breed, feed level and conditioning time on the tenderness of pork. Meat Science 44: 105–112.CrossRefGoogle ScholarPubMed
Wood, J. D., Nute, G. R., Fursey, G. A. J. and Cuthbertson, A. 1995. The effect of cooking conditions on the eating quality of pork. Meat Science 40: 127–135.CrossRefGoogle ScholarPubMed