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The cellularity of adipose tissue from pigs of different weights

Published online by Cambridge University Press:  27 March 2009

M. B. Enser ,
J. D. Wood ,
D. J. Restall  and
H. J. H. MacFie
M. B. Enser
Affiliation:
Agricultural Research Council, Meat Research Institute, Bristol BS18 1DY, U.K.
J. D. Wood
Affiliation:
Agricultural Research Council, Meat Research Institute, Bristol BS18 1DY, U.K.
D. J. Restall
Affiliation:
Agricultural Research Council, Meat Research Institute, Bristol BS18 1DY, U.K.
H. J. H. MacFie
Affiliation:
Agricultural Research Council, Meat Research Institute, Bristol BS18 1DY, U.K.
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Summary

Fat cell diameters were measured at 2-mm intervals throughout the depth of cores of subcutaneous shoulder and mid-back fat from ten Large White pigs. Five of the pigs were examined at 39 kg live weight and five at 70 kg live weight.

In the shoulder fat of both groups there was a gradual change in fat cell size from the skin to the musculature. Cells were relatively small beneath the skin and adjacent to the underlying muscle and increased in size towards the junction of the inner and outer fat layers. The major difference between the two groups of pigs was that the cells closest to the skin and in the bulk of the inner layer were larger in the heavier animals whereas the cells at the junction of the two layers and closest to the muscle were similar in size. Such a uniform picture was not observed in the mid-back region where cells from the inner layer were larger than those from the outer layer.

Cell size was Normally distributed at each site throughout the tissue. When the cell measurements for all the sites in each layer were combined there was no consistency in the type of distributions obtained although there was a tendency for them to be bimodal.

In both layers of the shoulder fat there was a significant increase in the number of cells present in the 70 kg pigs compared with the 39 kg pigs and the new cells contributed considerably to the growth of the tissue between these weights. The observed cell size distributions and the cell size gradients within the tissue suggest that in the inner shoulder layer the new cells arise adjacent to the muscle. In the mid-back there was no significant difference in the number of fat cells present in the two groups of pigs and the growth of the mid-back fat was due to an increase in the size of fat cells already present.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 86 , Issue 3 , June 1976 , pp. 633 - 638
Copyright
Copyright © Cambridge University Press 1976

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References

Anderson, D. B. (1972). The cellular development of adipose tissues. Proceedings of 25th Annual Reciprocal Meat Conference of the American Meat Science Association, pp. 9–39.Google Scholar
Anderson, D. B., Kauffman, R. G. & Kastenschmidt, L. L. (1972). Lipogenio enzyme activities and cellularity of porcine adipose tissue from various anatomical locations. Journal of Lipid Research 13, 593–9.CrossRefGoogle ScholarPubMed
Anderson, D. B. & Kaufmfan, R. G. (1973). Cellular and enzymatic changes in porcine adipose tissue during growth. Journal of Lipid Research 14, 160–8.CrossRefGoogle ScholarPubMed
Goldrick, R. B. (1967). Morphological changes in the adipocyte during fat deposition and mobilization. American Journal of Physiology 212, 777–82.CrossRefGoogle ScholarPubMed
Hood, R. L. & Allen, C. E. (1973). Lipogenic enzyme activity in adipose tissue during the growth of swine with different propensities to fatten. Journal of Nutrition 103 353–62.CrossRefGoogle ScholarPubMed
Lee, Y. B. & Kauffman, R. G. (1974a). Cellularity and enzymatic changes with animal growth in porcine intramuscular adipose tissue. Journal of Animal Science 38, 532–7.CrossRefGoogle Scholar
Lee, Y. B. & Kauffman, R. G. (1974b). Cellularity and lipogenic enzyme activities of porcine intramuscular adipose tissue. Journal of Animal Science 38, 538–44.CrossRefGoogle ScholarPubMed
Mersmann, H. J., Goodman, J. R. & Brown, L. J. (1975). Development of swine adipose tissue: Morphology and chemical composition. Journal of Lipid Research 16, 269–79.CrossRefGoogle ScholarPubMed
Mersmann, H. J., Underwood, M. C., Brown, L. J. & Houk, J. M. (1973). Adipose tissue composition and lipogenic capacity in developing swine. American Journal of Physiology 224, 1130–5.CrossRefGoogle ScholarPubMed
Sjostrom, L., Bjorntorp, P. & Vrana, J. (1971). Microscopic fat cell size measurements on frozen-cut adipose tissue in comparison with automatic deter-minations of osmium-fixed fat cells. Journal of Lipid Research 12, 521–30.CrossRefGoogle Scholar
Wood, J. D., Enser, M. B. & Restall, D. J. (1976). Fat cell size in Pietrain and Large White pigs. Journal of Agricultural Science, Cambridge 84, 221–5.CrossRefGoogle Scholar