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<meta content="Edriss, M.A." name="eprints.creators_name" />
<meta content="Siebert, B.D." name="eprints.creators_name" />
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<meta content="Breed differences and genetic parameters for melting point, marbling score and fatty acid composition of lot-fed cattle " name="eprints.title" />
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<meta content="Fatty acid composition, Melting point, Marbling score, Genetic parameters, Heritability, Triacylglycerols" name="eprints.keywords" />
<meta content="Fatty acid composition, marbling score and melting point data collected between 1994 and 1996 were analysed. The data were from the adipose tissue of 764 Angus, Belgian Blue, Hereford, Jersey, Limousin, South Devon and Wagyu crossbred cattle slaughtered after lot-feeding at 500 days of age. The aim was to investigate sire-breed differences and to estimate heritability and genetic and phenotypic correlations. Significant breed differences were found: Jersey crosses had the highest marbling score and Belgian Blue crosses had the lowest. Limousin crosses had the highest melting point and Jersey crosses the lowest. South Devon crosses had the highest proportion of stearate and Jersey crosses the lowest. Desaturation indices in C16 and C18 fatty acids were highest in Jersey crosses and lowest in Limousin and South Devon crosses. In contrast, there were no breed differences in the proportions of palmitate, oleate, total saturated, total mono-unsaturated fatty acids and elongation index. Heritability estimates of individual fatty acids and their summations, melting point and marbling were low to moderately low (0.05 to 0.27). Strong genetic correlations of melting point and desaturation index in C16 fatty acids (-0.93), melting point and stearate (0.62), marbling and stearate (-0.71) and marbling and desaturation index in C18 fatty acids (0.62) were observed. Phenotypic correlation were generally low. The results imply that fatty acids in the adipose tissue of lot-fed cattle have a moderately low heritability, hence genetic progress might be slow." name="eprints.abstract" />
<meta content="2000-04-01" name="eprints.date" />
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<meta content="Journal of Animal Physiology and Animal Nutrition" name="eprints.publication" />
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<meta content="AOCS (American Oil Chemists' Society) 1993: AOCS Official Method,3 25.
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Malau-Aduli, A. E. O., Siebert, B. D., Bottema, C. D. K., Pitchford, W. S., 1996: Genetic comparison of the fatty acid composition of intramuscular fat of early and late-maturing cattle breeds. In: Proc. 8th Animal Science Congress, Asian-Australasian Society of Animal Production, Tokyo, Japan, Vol. 2, 32.
Malau-Aduli, A. E. O., Siebert, B. D., Bottema, C. D. K., Pitchford,W. S.,1997a:Aust. J. Agric. Res.48,715.
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Malau-Aduli, A. E. O., 1998: Genetic variation in fatty acid composition of cattle breeds. PhD Thesis, University of Adelaide, Australia.
Malau-Aduli, A. E. O., Siebert, B. D., Deland, M. P. B., Bottema, C. D. K., Pitchford,W. S.,1998a:Heritabilities of triacylglycerol fatty acids from the adipose tissue of beef cattle at weaning and slaughter. In: Proc. 6th World Congress on Genetics Applied to Livestock Production, Vol. 25,181.
Malau-Aduli, A. E. O., Siebert, B. D., Bottema, C. D. K., Pitchford,W. S.,1998b:J. Anim. Sci.76,766.
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Siebert, B. D., Deland, M. P. B., 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 on Genetics Applied to Livestock Production, Vol. 25,177.
Thornton, R. F., Shaw, F. D., Hood, R. L., 1974:Aust. J. Exp. Agric. Husbandry14, 281.
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<meta content="Fatty acid composition, marbling score and melting point data collected between 1994 and 1996 were analysed. The data were from the adipose tissue of 764 Angus, Belgian Blue, Hereford, Jersey, Limousin, South Devon and Wagyu crossbred cattle slaughtered after lot-feeding at 500 days of age. The aim was to investigate sire-breed differences and to estimate heritability and genetic and phenotypic correlations. Significant breed differences were found: Jersey crosses had the highest marbling score and Belgian Blue crosses had the lowest. Limousin crosses had the highest melting point and Jersey crosses the lowest. South Devon crosses had the highest proportion of stearate and Jersey crosses the lowest. Desaturation indices in C16 and C18 fatty acids were highest in Jersey crosses and lowest in Limousin and South Devon crosses. In contrast, there were no breed differences in the proportions of palmitate, oleate, total saturated, total mono-unsaturated fatty acids and elongation index. Heritability estimates of individual fatty acids and their summations, melting point and marbling were low to moderately low (0.05 to 0.27). Strong genetic correlations of melting point and desaturation index in C16 fatty acids (-0.93), melting point and stearate (0.62), marbling and stearate (-0.71) and marbling and desaturation index in C18 fatty acids (0.62) were observed. Phenotypic correlation were generally low. The results imply that fatty acids in the adipose tissue of lot-fed cattle have a moderately low heritability, hence genetic progress might be slow." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Breed differences and genetic parameters for melting point, marbling score and fatty acid composition of lot-fed 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">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">Pitchford, W.S.</span> (2000) <xhtml:em>Breed differences and genetic parameters for melting point, marbling score and fatty acid composition of lot-fed cattle.</xhtml:em> Journal of Animal Physiology and Animal Nutrition, 83 (2). pp. 95-105. 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 onmouseover="EPJS_ShowPreview( event, 'doc_preview_664' );" href="http://eprints.utas.edu.au/653/1/JAPAN2000GeneticparametersMPMarbling.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_664' );"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a><div class="ep_preview" id="doc_preview_664"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/653/thumbnails/1/preview.png" class="ep_preview_image" border="0" /><div class="ep_preview_title">Preview</div></td></tr></table></div></td><td valign="top"><a href="http://eprints.utas.edu.au/653/1/JAPAN2000GeneticparametersMPMarbling.pdf"><span class="ep_document_citation">PDF (Author Version)</span></a> - Requires a PDF viewer<br />155Kb</td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://www.blackwell-synergy.com/doi/full/10.1046/j.1439-0396.2000.00254.x">http://www.blackwell-synergy.com/doi/full/10.1046/j.1439-0396.2000.00254.x</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Fatty acid composition, marbling score and melting point data collected between 1994 and 1996 were analysed. The data were from the adipose tissue of 764 Angus, Belgian Blue, Hereford, Jersey, Limousin, South Devon and Wagyu crossbred cattle slaughtered after lot-feeding at 500 days of age. The aim was to investigate sire-breed differences and to estimate heritability and genetic and phenotypic correlations. Significant breed differences were found: Jersey crosses had the highest marbling score and Belgian Blue crosses had the lowest. Limousin crosses had the highest melting point and Jersey crosses the lowest. South Devon crosses had the highest proportion of stearate and Jersey crosses the lowest. Desaturation indices in C16 and C18 fatty acids were highest in Jersey crosses and lowest in Limousin and South Devon crosses. In contrast, there were no breed differences in the proportions of palmitate, oleate, total saturated, total mono-unsaturated fatty acids and elongation index. Heritability estimates of individual fatty acids and their summations, melting point and marbling were low to moderately low (0.05 to 0.27). Strong genetic correlations of melting point and desaturation index in C16 fatty acids (-0.93), melting point and stearate (0.62), marbling and stearate (-0.71) and marbling and desaturation index in C18 fatty acids (0.62) were observed. Phenotypic correlation were generally low. The results imply that fatty acids in the adipose tissue of lot-fed cattle have a moderately low heritability, hence genetic progress might be slow.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><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">Fatty acid composition, Melting point, Marbling score, Genetic parameters, Heritability, Triacylglycerols</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 > 270200 Genetics > 270207 Quantitative Genetics</a><br /><a href="http://eprints.utas.edu.au/view/subjects/300403.html">300000 Agricultural, Veterinary and Environmental Sciences > 300400 Animal Production > 300403 Animal Nutrition</a><br /><a href="http://eprints.utas.edu.au/view/subjects/300401.html">300000 Agricultural, Veterinary and Environmental Sciences > 300400 Animal Production > 300401 Animal Breeding</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270101.html">270000 Biological Sciences > 270100 Biochemistry and Cell Biology > 270101 Analytical Biochemistry</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">653</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">09 Jan 2008 02:30</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=653;">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&eprintid=653">item control page</a></p>
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