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    <title>UTas ePrints - A comparison of the fatty acid composition of triacylglycerols in adipose tissue from Limousin and Jersey cattle</title>
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<meta content="A comparison of the fatty acid composition of triacylglycerols in adipose tissue from Limousin and Jersey cattle" name="eprints.title" />
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<meta content="triacylglycerols, fatty acids, Limousin, Jersey, Δ9-desaturase, elongase" name="eprints.keywords" />
<meta content="The fatty acid composition of the triacylglycerol fraction of shoulder fat from Limousin and Jersey yearling heifers, yearling steers, and non-lactating cows was investigated.
 
Significant breed differences in the degree of fatty acid saturation were apparent between Jersey and Limousin cows, but were not observed in the yearlings. Jersey cows had less saturated fatty acids than the Limousin. Jersey cows showed an increased percentage of monounsaturated fatty acids compared with the Jersey yearlings. In contrast, the level of monounsaturated fatty acids in the Limousin cows was the same as in the Limousin yearlings.
 
The calculated indices of enzyme activities also differed between the breeds. Jersey cows had higher indices of Δ9-desaturase and elongase activities than Limousin. This was also reflected by differences in the ratios of total unsaturated and polyunsaturated to saturated fatty acids.
 
Breed differences were also observed in the triacylglycerol fatty acid chain length. In this case, however, yearlings showed significant breed differences that were not detected in the cows. Limousin yearlings had more long chain fatty acids (C16 and C18) than the Jersey yearlings. Limousin yearlings also had a higher elongase activity index than their Jersey counterparts. Thus, breed and age affect the fatty acid composition in these cattle.
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<meta content="Brackebusch, S. A., McKeith, F. K., Carr, T. R., and McLaren,
D. G. (1991). Relationship between longissimus composition
and the composition of other major muscles of the beef
carcass. Journal of Animal Science 69, 631{40.
Christie, W. W. (1989). `Gas Chromatography and Lipids.'
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Cli®, R. W. (1987). Coronary heart disease: animal fat on trial.
Pathology 19, 325.
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(Eds D. E. Vance and J. E. Vance.) (Benjamin/Cummings
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Cundif, L. V., Dikeman, M. E., Koch, R. M., Crouse, J. D.,
and Gregory, K. E. (1988). Breeding for lean beef. Beef
Research Progress Report No. 3, USDA, pp. 3-7.
Eichorn, J. M., Coleman, L. J., Wakayama, E. J., Blomquist,
G. J., Bailey, C. M., and Jenkins, T.G. (1986). E®ects
of breed type and restricted versus ad libitum feeding on
fatty acid composition and cholesterol content of muscle
and adipose tissue from mature bovine females. Journal of
Animal Science 63, 781.
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in primary prevention of coronary heart disease. American
Journal of Clinical Nutrition 45, 1185.
Grundy, S. M., Florentin, L., Nix, D., and Whelan, M. F.
(1988). Comparison of monounsaturated fatty acids and carbohydrates
for reducing raised levels of plasma cholesterol
in man. American Journal of Clinical Nutrition 47, 965.
Gunstone, F. D., Harwood, J. L., and Padley, F. B. (1986).
`The Lipid Handbook.' (Chapman and Hall: London.)
Gurr, M. I., and Harwood, J. L. (1991). `Lipid Biochemistry:
An Introduction.' (Chapman and Hall: London.)
Huerta-Leidenz, N. O., Cross, H. R., Savell, J. W., Lunt, D.
K., Baker, J. F., Pelton, L. S., and Smith, S. B. (1993).
Comparison of the fatty acid composition of subcutaneous
adipose tissue from mature Brahman and Hereford cows.
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of Jersey cattle during growth and development. Journal of
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Leat, W. M. F. (1977). Depot fatty acids of Aberdeen Angus
and Friesian cattle reared on hay and barley diets. Journal
of Agricultural Science (Cambridge) 89, 575.
Lewis, J. L., Sadler, M. F., and Buick, D. R. (1993). Estimation
of the nutritional value of retail fat-trimmed beef cuts from
new gross composition data. Food Australia 45, 13{17.
Marmer, W. N., Maxwell, R. J., and Williams, J. E. (1984).
E®ects of dietary regimen and tissue site on bovine fatty
acid pro¯le. Journal of Animal Science 59, 109.
Mattson, F. H., and Grundy, S. M. (1985). Comparison of
dietary saturated, monounsaturated and polyunsaturated
fatty acids on plasma lipids and lipoproteins in man. Journal
of Lipid Research 26, 194.
Parrett, D. F., Bechtel, P. J., Romans, J. R., and McKeith, F.
K. (1989). Composition of beef subprimal cuts. Journal of
Food and Comparative Analysis 2, 79.
Pyle, C. A., Bass, J. J., Duganzich, D. M., and Payne, E.
(1977). The fatty acid composition of the subcutaneous
brisket fat from steers obtained from Angus cows mated
to 13 di®erent beef breeds. Journal of Agricultural Science
(Cambridge) 89, 571{4.
SAS Institute, Inc. (1989). `SAS User's Guide: Statistics.'
Version 6. (SAS Institute, Inc.: Cary, NC.)
Siebert, B. D., Deland, M. P., and Pitchford,W. S. (1996). Breed
di®erences in the fatty acid composition of subcutaneous
and intramuscular lipid of early and late maturing grain-
¯nished cattle. Australian Journal of Agricultural Research
47, 943{52.
Sinclair, A. J., and O'Dea, K. (1987). The lipid levels and fatty
acid compositions of the lean portions of Australian beef
and lamb. Food Technology in Australia 39, 228{31.
Smith, S. B., Prior, R. L., Ferrel, C. L., and Mersmann, H.
J. (1984). Interrelationships among diet, age, fat deposition
and lipid metabolism in growing steers. Journal of Nutrition
114, 153{62.
St John, L. C., Lunt, D. K., and Smith, S. B. (1991). Fatty
acid elongation and desaturation enzyme activity of bovine
liver and subcutaneous adipose tissue microsome. Journal
of Animal Science 69, 1064{73.
St John, L. C., Young, C. R., Knabe, D. A., Thompson, L. D.,
Schelling, G. T., Grundy, S. M., and Smith, S. B. (1987).
Fatty acid pro¯les and sensory and carcass traits of tissues
from steers and swine fed an elevated monounsaturated fat
diet. Journal of Animal Science 64, 1441.
Sumida, D. M., Vogt, D. W., Cobb, E. H., Iwanaga, I. I., and
Reimer, D. (1972). E®ect of breed type and feeding regime
on fatty acid composition of certain bovine tissues. Journal
of Animal Science 35, 1058.
Westerling, D. B., and Hedrick, H. B. (1979). Fatty acid composition
of bovine lipids as in°uenced by diet, sex and anatomical
location and relationship to sensory characteristics. Journal
of Animal Science 48, 1343" name="eprints.referencetext" />
<meta content="Malau-Aduli, A.E.O. and Siebert, B.D. and Bottema, C.D.K. and Pitchford, W.S. (1997) A comparison of the fatty acid composition of triacylglycerols in adipose tissue from Limousin and Jersey cattle. Australian Journal of Agricultural Research, 48 (5). pp. 715-722. ISSN 0004-9409" name="eprints.citation" />
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<meta content="The fatty acid composition of the triacylglycerol fraction of shoulder fat from Limousin and Jersey yearling heifers, yearling steers, and non-lactating cows was investigated.
 
Significant breed differences in the degree of fatty acid saturation were apparent between Jersey and Limousin cows, but were not observed in the yearlings. Jersey cows had less saturated fatty acids than the Limousin. Jersey cows showed an increased percentage of monounsaturated fatty acids compared with the Jersey yearlings. In contrast, the level of monounsaturated fatty acids in the Limousin cows was the same as in the Limousin yearlings.
 
The calculated indices of enzyme activities also differed between the breeds. Jersey cows had higher indices of Δ9-desaturase and elongase activities than Limousin. This was also reflected by differences in the ratios of total unsaturated and polyunsaturated to saturated fatty acids.
 
Breed differences were also observed in the triacylglycerol fatty acid chain length. In this case, however, yearlings showed significant breed differences that were not detected in the cows. Limousin yearlings had more long chain fatty acids (C16 and C18) than the Jersey yearlings. Limousin yearlings also had a higher elongase activity index than their Jersey counterparts. Thus, breed and age affect the fatty acid composition in these cattle.
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    <h1 class="ep_tm_pagetitle">A comparison of the fatty acid composition of triacylglycerols in adipose tissue from Limousin and Jersey cattle</h1>
    <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Malau-Aduli, A.E.O.</span> and <span class="person_name">Siebert, B.D.</span> and <span class="person_name">Bottema, C.D.K.</span> and <span class="person_name">Pitchford, W.S.</span> (1997) <xhtml:em>A comparison of the fatty acid composition of triacylglycerols in adipose tissue from Limousin and Jersey cattle.</xhtml:em> Australian Journal of Agricultural Research, 48 (5). pp. 715-722. ISSN 0004-9409</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2804/1/Malau-Aduli_et_al_1997BreedcompTAGsJerseyLimo.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2804/1/Malau-Aduli_et_al_1997BreedcompTAGsJerseyLimo.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />351Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="3712" name="docid" accept-charset="utf-8" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1071/A96083">http://dx.doi.org/10.1071/A96083</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The fatty acid composition of the triacylglycerol fraction of shoulder fat from Limousin and Jersey yearling heifers, yearling steers, and non-lactating cows was investigated.&#13;
&#13;
Significant breed differences in the degree of fatty acid saturation were apparent between Jersey and Limousin cows, but were not observed in the yearlings. Jersey cows had less saturated fatty acids than the Limousin. Jersey cows showed an increased percentage of monounsaturated fatty acids compared with the Jersey yearlings. In contrast, the level of monounsaturated fatty acids in the Limousin cows was the same as in the Limousin yearlings.&#13;
&#13;
The calculated indices of enzyme activities also differed between the breeds. Jersey cows had higher indices of Δ9-desaturase and elongase activities than Limousin. This was also reflected by differences in the ratios of total unsaturated and polyunsaturated to saturated fatty acids.&#13;
&#13;
Breed differences were also observed in the triacylglycerol fatty acid chain length. In this case, however, yearlings showed significant breed differences that were not detected in the cows. Limousin yearlings had more long chain fatty acids (C16 and C18) than the Jersey yearlings. Limousin yearlings also had a higher elongase activity index than their Jersey counterparts. Thus, breed and age affect the fatty acid composition in these cattle.&#13;
</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">triacylglycerols, fatty acids, Limousin, Jersey, Δ9-desaturase, elongase</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270207.html">270000 Biological Sciences &gt; 270200 Genetics &gt; 270207 Quantitative Genetics</a><br /><a href="http://eprints.utas.edu.au/view/subjects/300401.html">300000 Agricultural, Veterinary and Environmental Sciences &gt; 300400 Animal Production &gt; 300401 Animal Breeding</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270100.html">270000 Biological Sciences &gt; 270100 Biochemistry and Cell Biology</a><br /><a href="http://eprints.utas.edu.au/view/subjects/300400.html">300000 Agricultural, Veterinary and Environmental Sciences &gt; 300400 Animal Production</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2804</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Aduli E.O. Malau-Aduli</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">04 Jan 2008 11:52</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">24 Jan 2008 11:05</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2804;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=2804">item control page</a></p>
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