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A chemical study of soft fat in cross-bred pigs

Published online by Cambridge University Press:  27 March 2009

C. H. Lea ,
P. A. T. Swoboda  and
D. P. Gatherum
C. H. Lea
Affiliation:
A.B.C. Food Research Institute, Norwich
P. A. T. Swoboda
Affiliation:
A.B.C. Food Research Institute, Norwich
D. P. Gatherum
Affiliation:
A.R.C. Meat Research Institute, Langford, Bristol
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Summary

Iodine values, melting (slip) points and fatty acid analyses for back (‘bung’) and perinephric (kidney) fats from 114 pure and cross-bred pigs are reported.

In most cases the effects of breed were small, but half-Hampshire crosses showed a high proportion of pigs producing abnormally soft and highly unsaturated fats, though others were normal.

Although a general correlation existed between iodine value and melting-point the relationship broke down in some cases, and the ratio of monoene to saturated fatty acids of carbon chain length 16 and 18 is suggested as a better chemical index of softness due to causes other than dietary lipid.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 74 , Issue 2 , April 1970 , pp. 279 - 289
Copyright
Copyright © Cambridge University Press 1970

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References

REFERENCES

Callow, E. H. (1937). Low Temperature Research Station, internal memorandum.Google Scholar
Elliott, J. I. & Bowland, J. P. (1968). Effects of dietary copper sulphate on the fatty acid composition of porcine depot fats. J. Anim. Sci. 27, 956–60.Google Scholar
Ellis, N. R. & Hankins, O. G. (1925). Soft porkstudies. I. Formation of fat in the pig on a diet moderately low in fat. J. biol. Chem. 66, 101–22.CrossRefGoogle Scholar
Hankens, O. G. & Ellis, N. R. (1926). Some results of soft pork investigations. Bull. U.S. Dcp. Agric. no. 1407.Google Scholar
Johns, A. T. (1941). The influence of sex upon the composition of the fat of the pig. N.Z. Jl Sci. Technol. 22, 248A–58A.Google Scholar
Koch, D. E., Parr, A. F. & Merkel, R. A. (1968). Fatty acid composition of the inner and outer layers of porcine backfat as affected by energy level, sex and sire. J. Fd Sci. 33, 176–80.CrossRefGoogle Scholar
Leat, W. M. F. (1961). Studies on pigs reared on diets low in tocopherol and essential fatty acids. Br. J. Nutr. 15, 259–70.Google Scholar
Leat, W. M. F., Cuthbertson, A., Howard, A. N. & Gresham, G. A. (1964). Studies on pigs reared on semi-synthetic diets containing no fat, beef tallow and maize oil: composition of carcass and fatty acid composition of various depot fats. J. agric. Sci., Camb. 63, 311–17.Google Scholar
Ltjsh, J. L., Thomas, B. H., Culbertson, C. C. & Beard, F. J. (1936). Variations in the softness of lard produced in the record of performance testing. Proc. Am. Soc. Anim. Prod. 29, 258 (Abstract).Google Scholar
Mikkema, D., Kroeske, D. & Hart, P. C. (1961). Enkele genetische aspecten van zachte bacon. Tijdschr. Diergeneesk. 86, 111–20.Google Scholar
Moore, J. H., Christie, W. W., Braude, R. & Mitchell, K. G. (1968). The effect of 250 p.p.m. of copper in the diet of growing pigs on the fatty acid composition of the adipose tissue lipids. Proc. Nutr. Soc. 27, 45A–46A.CrossRefGoogle Scholar
Moore, J. H., Christie, W. W., Braude, R. & Mitchell, K. G. (1969). The effect of dietary copper on the fatty acid composition and physical properties of pig adipose tissues. Br. J. Nutr. 23, 281–7.Google Scholar
Stinson, C. G., Deman, J. M. & Bowland, J. P. (1967). Fatty acid composition and glyceride structure of piglet body fat from different sampling sites. J. Am. Oil Chem. Soc. 44, 253–5.CrossRefGoogle Scholar
Swoboda, P. A. T. & Peers, K. E. (1969). Characterization of the alkali transmethylation procedure for gas chromatography of fatty acids. (In preparation.)Google Scholar
Taylor, M. & Thomke, S. (1964). Effect of high-level copper on the depot fat of bacon pigs. Nature, Lond. 201, 1246.CrossRefGoogle Scholar
Thomke, S. & Taylor, M. (1964). The effect of highlevel copper on some meat back fat factors of pigs. Paper B 6, 10th Conference of European Meat Research Workers, Roskilde.Google Scholar