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dc.contributor.authorGravador, Rufielyn S.
dc.contributor.authorMoloney, Aidan P
dc.contributor.authorBrunton, Nigel
dc.contributor.authorGkarane, Vasiliki
dc.contributor.authorAllen, Paul
dc.contributor.authorFahey, Alan G
dc.contributor.authorClaffey, Noel A.
dc.contributor.authorDiskin, Michael G.
dc.contributor.authorFarmer, Linda J.
dc.contributor.authorMonahan, Frank J
dc.date.accessioned2020-02-19T14:52:40Z
dc.date.available2020-02-19T14:52:40Z
dc.date.issued2018-10-04
dc.identifier.citationGravador, R., Moloney, A., Brunton, N., Gkarane, V., Allen, P., Fahey, A., Claffey, N., Diskin, M., Farmer, L. and Monahan, F. Effects of castration and slaughter age on the fatty acid composition of ovine muscle and adipose tissue from two breeds. Small Ruminant Research, 2018, 168, 94-100. doi: https://doi.org/10.1016/j.smallrumres.2018.09.018en_US
dc.identifier.issn0921-4488
dc.identifier.urihttp://hdl.handle.net/11019/1876
dc.descriptionpeer-revieweden_US
dc.description.abstractFatty acids (g/100 g total fatty acids) in M. longissimus thoracis et lumborum (LTL) and total branched chain fatty acids (μg/g fat) in subcutaneous adipose tissue (SAT) of rams and castrates from Scottish Blackface (SB) or Texel × Scottish Blackface (T × SB) lambs, slaughtered at mean ages of 196, 242, 293, 344 or 385 days were determined. Lambs were fed pasture prior to a 36-day finishing period on a barley/maize-based concentrate ration. The intramuscular fat content (IMF; %) was higher (P < 0.001) in castrates than in rams and in SB compared to T × SB lambs (P < 0.001). The proportions of c9-C18:1 and total monounsaturated fatty acids (MUFA) were higher (P < 0.001) in LTL of castrates than rams. The proportions of C18:2n-6 and total n-6 polyunsaturated fatty acids (PUFA) were lower (P = 0.001) in LTL of castrates compared to rams related to differences in IMF content. The proportions of C14:0, C16:0, c9-C18:1 and total MUFA were higher (P < 0.05), while the proportions of C18:2n-6, C20:4n-6, C20:5n-3, total PUFA, n-6 and n-3 PUFA were lower (P < 0.05), in SB than in T × SB lambs, which was related to differences in IMF content. There was a higher (P < 0.001) proportion of conjugated linoleic acid (CLA) c9,t11-C18:2 in LTL from SB compared to T × SB. The effects of slaughter age on the proportions of fatty acids in LTL did not show a clear trend. The concentration of 4-methylnonanoic acid was higher (P = 0.002) in SAT of rams than castrates, particularly in older lambs. Despite the differences in the muscle fatty acid composition due to gender, slaughter age or breed of lambs, the ratio of n-6/n-3 PUFA (≤3.11) was within the dietary recommendation of <4.0 for human health.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofseriesSmall Ruminant Research;Vol. 168
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectBranched chain fatty acidsen_US
dc.subjectCLAen_US
dc.subjectLamb meaten_US
dc.subjectOmega-3en_US
dc.subjectPUFAen_US
dc.subjectRamen_US
dc.titleEffects of castration and slaughter age on the fatty acid composition of ovine muscle and adipose tissue from two breedsen_US
dc.typeArticleen_US
dc.embargo.terms2019-10-04en_US
dc.identifier.doihttps://doi.org/10.1016/j.smallrumres.2018.09.018
dc.contributor.sponsorDepartment of Agriculture, Food and the Marineen_US
dc.contributor.sponsorTeagasc Walsh Fellowship Programmeen_US
dc.contributor.sponsorGrantNumber11/SF/310en_US
dc.contributor.sponsorGrantNumber2013058en_US
dc.source.volume168
dc.source.beginpage94-100
refterms.dateFOA2019-10-04T00:00:00Z


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