Effect of basal diet (B) and soybean oil (O) on the C18 FA composition (% of total C18 FA) in rumen content from lambs fed concentrate or lucerne, with or without soybean oil supplementation.

a,b,c,d within a row, means without a common letter differ (P<0.05);
1Diets: C, concentrate; CO, concentrate plus 10% soybean oil; L, pelleted lucerne; LO, pelleted lucerne plus 10% soybean oil.
2cis-9,trans-11 coelutes with trans-7,cis-9 and trans-8,cis-10;
3trans-10,trans-12 might coelute with other trans,trans CLA isomers.
4BI, biohydrogenation intermediates, include total C18 FA minus 18∶0, 18∶1cis-9, 18∶1cis-11, 18∶2n-6 and 18∶3n−3.
*data not included in the statistical analysis. Abbreviations: i, iso; a, anteiso.