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    <title>UTas ePrints - Estimates of genetic parameters for triacylglycerol fatty acids in beef cattle at weaning and slaughter</title>
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<meta content="Adipose tissues from the 12th and 13th rib interface were sampled at weaning (324 cattle) and slaughter (310 cattle). The animals were progeny from Hereford dams sired by Angus, Belgian Blue, Hereford, Jersey, Limousin, South Devon and Wagyu. Fatty acid composition of the triacylglycerol fraction at both stages was measured by gas-liquid chromatography. Estimates of heritability and genetic and phenotypic correlations at weaning and slaughter were computed by restricted maximum likelihood using a sire model in both univariate and multivariate analyses. Results indicated that generally, there were strong, positive genetic correlations between fatty acids at weaning and slaughter (as high as 0.98). Phenotypic correlations were however, low and poor (0.04 to 0.44). Heritability (h2) estimates at weaning were low to moderate, ranging from 0.0 to 0.31. However, at slaughter, h2 estimates were generally higher than at weaning: Stearate, oleate and total monounsaturates had h2 estimates of 0.43, 0.37 and 0.40, respectively. Other carcass traits such as marbling score and melting point of fat had h2 estimates of 0.20 and 0.52, respectively. Significant breed, sex and location differences in fatty acid composition were also observed at weaning and slaughter. " name="eprints.abstract" />
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<meta content="AOAC 1984: Official Methods of Analysis, 14th edn. Association of Official Analytical Chemists, 

Arnold, J. W. , Bertrand, J. K. , Benyshek, L. L. , Ludwig, C. , 1991: J. Anim. Sci. 69, 911. 

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Malau-Aduli, A. E. O. , Siebert, B. D. , Bottema, C. D. K. , Pitchford, W. S. , 1997: Aust. J. Agric. Res. 48, 715. 

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Siebert, B. D., Deland, M. P. , Pitchford, W. S. , 1996: Aust. J. Agric. Res. 47, 943. 

Siebert, B. D., Malau-Aduli, A. E. O. , Bottema, C. D. K. , Deland, M. P. B. , Pitchford, W. S. , 1998: Genetic variation between crossbred weaner calves in triacylglycerol fatty acid composition. In: Proc. 6th World Congress Genetics Applied Livestock Production, Vol. 25, 177,University of New England, Armidale, Australia. 

Smith, G. C. , Savell, J. W. , Clayton, R. P. , Field, T. G. , Griffin, D. B. , Hale, D. S. , Miller, M. F. , Montgomery, T. H. , Morgan, J. B. , Tatum, J. D. , Wise, J. W. , 1991: The final report of the National Beef Quality Audit. Colorado State University, (Quoted by Marshall, 1994). 

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Zembayashi, M. , Nishimura, K. , Lunt, D. K. , Smith, S. B. , 1995: J. Anim. Sci. 73, 3325. 
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    <h1 class="ep_tm_pagetitle">Estimates of genetic parameters for triacylglycerol fatty acids in beef cattle at weaning and slaughter</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">Edriss, M.A.</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">Deland, M.P.B.</span> and <span class="person_name">Pitchford, W.S.</span> (2000) <xhtml:em>Estimates of genetic parameters for triacylglycerol fatty acids in beef cattle at weaning and slaughter.</xhtml:em> Journal of Animal Physiology and Animal Nutrition, 83 (4-5). pp. 169-180. ISSN 0931-2439</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/652/1/JAnimPhysiolAnimNutr2000EstimGenetPar.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/652/1/JAnimPhysiolAnimNutr2000EstimGenetPar.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />194Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="662" 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://www.blackwell-synergy.com/doi/pdf/10.1046/j.1439-0396.2000.00256.x">http://www.blackwell-synergy.com/doi/pdf/10.1046/j.1439-0396.2000.00256.x</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Adipose tissues from the 12th and 13th rib interface were sampled at weaning (324 cattle) and slaughter (310 cattle). The animals were progeny from Hereford dams sired by Angus, Belgian Blue, Hereford, Jersey, Limousin, South Devon and Wagyu. Fatty acid composition of the triacylglycerol fraction at both stages was measured by gas-liquid chromatography. Estimates of heritability and genetic and phenotypic correlations at weaning and slaughter were computed by restricted maximum likelihood using a sire model in both univariate and multivariate analyses. Results indicated that generally, there were strong, positive genetic correlations between fatty acids at weaning and slaughter (as high as 0.98). Phenotypic correlations were however, low and poor (0.04 to 0.44). Heritability (h2) estimates at weaning were low to moderate, ranging from 0.0 to 0.31. However, at slaughter, h2 estimates were generally higher than at weaning: Stearate, oleate and total monounsaturates had h2 estimates of 0.43, 0.37 and 0.40, respectively. Other carcass traits such as marbling score and melting point of fat had h2 estimates of 0.20 and 0.52, respectively. Significant breed, sex and location differences in fatty acid composition were also observed at weaning and slaughter. </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">Additional Information:</th><td valign="top" class="ep_row">The definitive version is available at www.blackwell-synergy.com&#13;
</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Fatty acids, Genetic parameters, Beef cattle, Weaning, Slaughter</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/270603.html">270000 Biological Sciences &gt; 270600 Physiology &gt; 270603 Animal Physiology - Systems</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270101.html">270000 Biological Sciences &gt; 270100 Biochemistry and Cell Biology &gt; 270101 Analytical Biochemistry</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">652</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">01 Feb 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">08 Feb 2008 14:55</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=652;">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=652">item control page</a></p>
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