Effect of extruded cotton and canola seed on unsaturated fatty acid composition in the plasma, erythrocytes and livers of lambs

Abstract

An experiment was conducted to study the effects of extruded cotton seed (ECOS) and canola seed (ECAS) in the diet of male Mehraban lambs on the concentration of unsaturated fatty acids in their plasma, erythrocytes and livers. The treatments were: (1) control (C); (2) diet C+6% ECAS, (3) diet C+6% ECOS, (4) diet C+12% ECAS, (5) diet C+12% ECOS, (6) diet C+6% ECAS+6% ECOS, (7) diet C+12% ECAS +6% ECOS, (8) diet C+6% ECAS +12% ECOS, (9) diet C+12% ECAS+12% ECOS, (10) diet C+18% ECAS+18% ECOS. A complete randomized experimental design was applied. Sixty lambs (5 -6 months of age) were randomly allocated to the 10 dietary treatments in order to have six lambs (replicates) per diet. The lambs were housed in individual pens. The average weight of lambs at the onset of the study was 34.3 ± 2.12 kg. The experiment lasted for 90 days. Results indicated that the concentration of oleic acid (C18:1), linoleic acid (C18:2 n-6) and linolenic acid (C18:3 n-3) in the plasma and oleic acid and linolenic acid in erythrocyte lipids were higher in lambs fed diets containing oil seeds or a combination of the oil seeds compared to those receiving the control diet. The supplementation of 6% and 12% ECAS increased the linoleic acid concentration in the liver lipids significantly compared to those fed the diets containing ECOS. There was a linear correlation between linoleic acid content of the liver and levels of dietary ECAS and ECOS. This study provides evidence that dietary oleic acid, linoleic acid and linolenic acid might escape biohydrogenation in the rumen and showed that the type of dietary fat has a marked impact on lipid metabolism in the liver. ________________________________________________________________________________

A comparison of the proximate, fibre, mineral content, amino acid and the fatty acid profile of Marula (Sclerocarya birreacaffra) nut and soyabean (Glycine max) meals

“…By contrast, the bulk of the SBM oil was made up of 457.5 g kg –1 PUFAs and almost equal proportions of the TSFAs (256.0 g kg –1 ) and MUFAs: 279.0 g kg –1 . Despite the high concentration of OA in Marula nut meals and its beneficial effects in animal health and meat quality, a large amount of residual oil in the Marula meals could result in the shortening of the shelf life of feeds as a result of the rancidity that develops from lipid peroxidation. Thus, it would be ideal either to incorporate antioxidants into the feeds or to substantially reduce the residual oil content of the Marula nut meals prior to their use as feed ingredients.…”

Serum fatty acids, biochemical indices and antioxidant status in goats fed canola oil and palm oil blend

“…This finding concurs with those of Loor et al [ 31 ] who observed that dairy cattle fed 3.3 % canola oil, canolamide or blend of canola oil and canolamide had higher serum C18:1n-9 compared with those fed control diet. In addition, Ahmadi sheik et al [ 33 ] observed that lambs fed extruded canola and cotton seeds had higher plasma C18:1n-9 compared to those fed control diets.…”