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The influence of the proportion of Duroc genes on growth, carcass and pork eating quality characteristics

Published online by Cambridge University Press:  18 August 2016

P. J. Blanchard ,
C. C. Warkup ,
M. Ellis ,
M. B. Willis  and
P. Avery
P. J. Blanchard*
Affiliation:
Department of Agriculture, King George VI Building, University of Newcastle upon Tyne, Newcastle upon Tyne NE1 7RU
C. C. Warkup
Affiliation:
Meat and Livestock Commission, PO Box 44, Winterhill House, Snowdon Drive, Milton Keynes MK6 1AX
M. Ellis*
Affiliation:
Department of Agriculture, King George VI Building, University of Newcastle upon Tyne, Newcastle upon Tyne NE1 7RU
M. B. Willis
Affiliation:
Department of Agriculture, King George VI Building, University of Newcastle upon Tyne, Newcastle upon Tyne NE1 7RU
P. Avery
Affiliation:
Department of Mathematics and Statistics, University of Newcastle upon Tyne, Newcastle upon Tyne NE1 7RU
*
†Present address: Frank Wright Ltd, Blenheim House, Blenheim Road, Ashbourne, Derbyshire DE6 1HA.
‡Department of Animal Science, University of Illinois, 210 Animal Sciences Laboratory, 1207 W Gregory Drive, Urbana, Illinois 61801, USA.
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Abstract

A study was carried out involving 721 pigs, comprising boars and gilts, with either 0, 0.25 , or 0.50 Duroc inclusion level, which were produced by mating Large White boars with Large White × British Landrace sows, Large White boars with Duroc × (Large White × British Landrace) sows, or Duroc boars with Large White × British Landrace sows, respectively. Animals were reared on one of seven different feeding regimens from 30 to 90 kg live weight. Tissue growth rates were determined using a triple sampling procedure based on a combination of full-side and ham joint dissection on subsamples of pigs (127 and 366 pigs, respectively) and P2 backfat thickness on the remainder. Initial body composition was determined at 30 kg on subsamples of the three genotypes. Daily food intakes increased with increasing Duroc inclusion but live-weight gains were similar for the three genotypes. Lean and fat growth rates and food conversion ratios were greatest for the 0·50 Duroc group, although the genotype differences were small. Killing-out proportions and P2 fat depths were higher for the 0.25 and 0·50 Duroc groups. The proportion of lean in the carcass was lower (P < 0·01) for 0·50 Duroc pigs. Japanese colour scores and EEL reflectance indicated that the longissimus muscle was darker for the 0·25 and 0·50 Duroc genotypes. Subcutaneous fat firmness scores and penetrometer readings taken in the mid back indicated softer fat for the 0 Duroc group. Intramuscular fat levels increased (P < 0·01) with increasing Duroc inclusion (10.4, 11.2, and 18·2 g/kg for the 0, 0.25, and 0.50 groups respectively). Cooked longissimus from pigs with 0·50 Duroc had a lower shear force and was judged to have a stronger pork odour and to be more tender and acceptable than that from the 0 Duroc group. The 0.25 Duroc group showed a small improvement in tenderness but a weaker pork odour and similar overall acceptability compared with the 0 Duroc group. This study suggests that the use of the Duroc in crossing systems in the United Kingdom will have limited impact on growth performance but that 0·50 Duroc inclusion will result in fatter carcasses, higher intramuscular fat levels and improved eating quality.

Keywords

compositionDurocgrowthmeat qualitypigs
Type
Research Article
Information
Animal Science , Volume 68 , Issue 3 , April 1999 , pp. 495 - 501
Copyright
Copyright © British Society of Animal Science 1999

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References

Barton-Gade, P. A. 1988. The effect of breed on meat quality characteristics in pigs. Proceedings of the 34th international congress of meat science and technology, Brisbane, Australia, pp. 568–570.Google Scholar
Barton-Gade, P.A. 1990. Danish experience in meat quality improvement. Proceedings of the fourth world congress on genetics applied to livestock production, Edinburgh, vol. XV, pp. 511–520.Google Scholar
Bejerholm, C. and Barton-Gade, P. 1986. Effect of intramuscular fat level on eating quality of pig meat. Proceedings of the 32nd European meeting of meat research workers, Ghent, Belgium, pp. 389–391.Google Scholar
Blanchard, P. J., Ellis, M., Warkup, C.C., Chadwick, J. P. and Willis, M. B. 1999a. The influence of sex (boars and gilts) on growth, carcass and pork eating quality characteristics. Animal Science 68: 487–493.Google Scholar
Blanchard, P. J., Ellis, M., Warkup, C.C., Hardy, B., Chadwick, J. P. and Deans, G. A. 1999b. The influence of rate of lean and fat tissue development on pork eating quality. Animal Science 68: 477–485.Google Scholar
Cameron, N. D. 1990. Comparison of Duroc and British Landrace pigs and the estimation of genetic and phenotypic parameters for growth and carcass traits. Animal Production 50: 141–153.Google Scholar
Cameron, N. D., Warriss, P. D., Porter, S. J. and Enser, M. B. 1990. Comparison of Duroc and British Landrace pigs for meat and eating quality. Meat Science 27: 227–247.Google Scholar
Edwards, S. A., Wood, J. D., Moncrieff, C.B.. and Porter, S. J. 1992. Comparison of the Duroc and Large White as terminal sire breeds and their effect on pigmeat quality. Animal Production 54: 289–297.Google Scholar
Ellis, M., Webb, A. J., Avery, P. J. and Brown, I. 1996. The influence of terminal sire genotype, sex, slaughter weight, feeding regime and slaughter-house on growth performance, and carcass and met quality in pigs and on the organoleptic properties of fresh pork. Animal Science 62: 521–530.Google Scholar
Engel, B. and Walstra, P. 1991. A simple method to increase precision or reduce expense in regression experiments to predict the proportion of lean meat of carcasses. Animal Production 53: 353–359.Google Scholar
McGloughlin, P., Allen, P., Tarrant, P. V. and Joseph, R. L. 1988. Growth and carcass quality of crossbred pigs sired by Duroc, Landrace and Large White boars. Livestock Production Science 18: 275–288.Google Scholar
Martel, J., Minvielle, F. and Poste, L. M. 1988. Effects of crossbreeding and sex on carcass composition, cooking properties and sensory characteristics of pork. Journal of Animal Science 66: 41–46.Google Scholar
Meat and Livestock Commission. 1992. Second Stotfold Pig Development Unit trial results. Meat and Livestock Commission, Milton Keynes, UK.Google Scholar
Nieuwhof, G. J., Kanis, E., Hel, W. van der, Verstegen, M. W. A., Huisman, J. and Wal, P. van der. 1991. Effect of recombinant porcine somatotropin on body composition and meat quality in growing pigs; interactions with genotype, sex and slaughter weight. Meat Science 30: 265–278.Google Scholar
Purchas, R. W., Smith, W.C. and Pearson, G. 1990. A comparison of the Duroc, Hampshire, Landrace, and Large White as terminal sire breeds of crossbred pigs slaughtered at 85 kg liveweight. 2. Meat quality. New Zealand Journal of Agricultural Research 33: 97.Google Scholar
Rempel, W. E. and Marshall, M. L. 1990. Inheritance of coat colour in swine. In Genetics of swine (ed. Young, L. D.), pp. 41–44. Technical Committee of the North Central Regional Research Project, NC-103.Google Scholar
Simpson, S. P., Webb, A. J. and Dick, S. 1987. Evaluation of Large White and Duroc boars as terminal sires under two different feeding regimes. Animal Production 45: 111–116.Google Scholar
Smith, W.C. and Pearson, G. 1986. Comparative voluntary feed intakes, growth performance, carcass composition and meat quality of Large White, Landrace and Duroc pigs. New Zealand Journal of Experimental Agriculture 14: 43.Google Scholar
Smith, W.C, Pearson, G. and Garrick, D. J. 1988. Evaluation of the Duroc in comparison with the Landrace and Large White as a terminal sire of crossbred pigs slaughtered at 85 kg liveweight. New Zealand Journal of Agricultural Research 31: 421–430.Google Scholar
Warriss, P. D., Brown, S. N., Rolph, T. P. and Kestin, S. C 1990. Interactions between the beta-adrenergic agonist salbutamol and genotype on meat quality in pigs. Journal of Animal Science 68: 3669.Google Scholar
Wood, J. D., Kempster, A. J., David, P. J. and Bovey, M. 1987. Observations on carcass and meat quality in Duroc, Landrace and Duroc × Landrace pigs. Animal Production 44: 488 (abstr.).Google Scholar
Wood, J. D., Wiseman, J. and Cole, D. J. A. 1994. Control and manipulation of meat quality. In Principles of pig science (ed. Cole, D. J. A. Wiseman, J. and Varley, M. A.), pp. 433–456. Nottingham University Press, Nottingham.Google Scholar