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Relationships between whole-body chemical composition, physically dissected carcass parts and backfat measurements in pigs

Published online by Cambridge University Press:  02 September 2010

A. J. Rook ,
M. Ellis ,
C. T. Whittemore  and
P. Phillips
A. J. Rook
Affiliation:
Faculty of Agriculture, The University, Newcastle upon Tyne NE1 7RU
M. Ellis
Affiliation:
Faculty of Agriculture, The University, Newcastle upon Tyne NE1 7RU
C. T. Whittemore
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG
P. Phillips
Affiliation:
AFRC Unit of Statistics, Kings Buildings, Mayfield Road, Edinburgh EH9 3JZ
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Abstract

Log-linear relationships between various measurements of the chemical and physical body composition of the pig were obtained in four datasets representing a range of sexes, genotypes and feeding treatments. One of these datasets (dataset 1) comprised genetic control and selection line Large White pigs. There were significant differences between datasets for most of the relationships investigated. The causes of the differences cannot be determined. Within datasets, relationships between various body components and the weight of crude protein in the whole body were unaffected by genotype or sex. The relationships of both intermuscular fat and trimmed carcass lipid with whole body lipid differed significantly between the control and selection lines in dataset 1. Fat thickness measurements taken over the m. longissimus at the last rib were less at the same body lipid in the selection line than the control line suggesting a redistribution of fat away from this area as a result of selection. Relationships between viscera, lungs and empty body weight were significantly affected by line while those between trimmed carcass, liver, kidneys and empty body weight were significantly affected by sex. Selection line pigs had less perinephric and retroperitoneal fat than controls at the same whole body fat weight and less subcutaneous fat at the same cold carcass weight. There were no significant line effects on lean or bone weight distribution. Selection line pigs had significantly less subcutaneous fat in the collar joint and more intermuscular fat in the ham. There were few significant sex effects on tissue weight distribution.

Type
Research Article
Information
Animal Production , Volume 44 , Issue 2 , April 1987 , pp. 263 - 273
Copyright
Copyright © British Society of Animal Science 1987

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References

REFERENCES

Agricultural Research Council. 1981. The Nutrient Requirements of Pigs. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Cuthbertson, A. 1968. PIDA dissection techniques. Proceedings of Symposium on Methods of Carcass Evaluation, European Association of Animal Production, Dublin (Mimeograph).Google Scholar
Davies, A. S. 1983. Growth and development of pigs: a reanalysis of the effects of nutrition on body composition. Journal of Agricultural Science, Cambridge 100: 681–687.CrossRefGoogle Scholar
Ellis, M., Smith, W. C., Henderson, R., Whittemore, C. T. and Laird, R. 1983a. 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
Ellis, M., Smith, W. C., Henderson, R., Whittemore, C. T., Laird, R. and Phillips, P. 1983b Comparative performance and body composition of control and selection line Large White pigs. 3. Three low feeding scales for a fixed time. Animal Production 37: 253–258.Google Scholar
Evans, D. G. and Kempster, A. J. 1979. The effects of genotype, sex and feeding regimen on pig carcass development. 1. Primary components, tissues and joints. Journal of Agricultural Science, Cambridge 93: 339–347.Google Scholar
Fowler, V. R. and Livingstone, R. M. 1972. Modern concepts of growth in pigs. In Pig Production (ed. Cole, D. J. A.), pp. 143–161. Butterworths, London.Google Scholar
Henderson, R., Whittemore, C. T., Ellis, M., Smith, W. C., Laird, R. and Phillips, P. 1983. Comparative performance and body composition of control and selection line Large White pigs. 1. On a generous fixed feeding scale for a fixed time. Animal Production 36: 399–405.Google Scholar
Houseman, R. A. 1972. Studies of methods of estimating body composition in the living pig. Ph.D. Thesis, University of Edinburgh.Google Scholar
Kielanowski, J. 1976. The chemical composition of the live-weight gain and the performance of growing pigs. Livestock Production Science 3: 257–269.CrossRefGoogle Scholar
Lawes Agricultural Trust. 1980. Genstat V, Mark 4.03. Rothamsted Experimental Station, Harpenden, Hertfordshire.Google Scholar
Shields, R. G., Mahan, D. C. and Graham, P. L. 1983. Changes in swine body composition from birth to 145 kg. Journal of Animal Science 57: 43–54.Google Scholar
Tullis, J. B. 1981. Protein growth in pigs. Ph.D. Thesis, University of Edinburgh.Google Scholar
Whittemore, C. T. 1983. Development of recommended energy and protein allowances for growing pigs. Agricultural Systems 11: 159–186.Google Scholar
Whittemore, C. T. and Fawcett, R. H. 1976. Theoretical aspects of a flexible model to simulate protein and lipid growth in pigs. Animal Production 22: 87–96.Google Scholar
Whittemore, C. T., Moffat, I. W. and Taylor, A. G. 1976. Evaluation by digestibility, growth and slaughter of microbial cells as a source of protein for young pigs. Journal of the Science of Food and Agriculture 27: 1163–1170.Google Scholar
Wood, J. D., Whelehan, O. P., Ellis, M., Smith, W. C. and Laird, R. 1983. Effects of selection for low backfat thickness in pigs on the sites of tissue deposition in the body. Animal Production 36: 389–397.Google Scholar