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The objective of this study was to determine the effects of diet supplemented with marigold on egg yolk fatty acid composition and egg quality parameters. Sixty hens were assigned into three groups and fed diets supplemented with 0 (control), 10 g kg−1, or 20 g kg−1 marigold for 42 days. Eggs collected at the 6th week of the study were analyzed for fatty acid analysis. Laying performance, egg quality parameters, and feed intake were also evaluated. Yolk color scores in the group fed the 20 g kg−1 marigold-supplemented diet were found greater than control (10.77 versus 9.77). Inclusion of 20 g kg−1 marigold in diet influenced egg weights adversely compared to the control. Diet supplemented with 10 g kg−1 or 20 g kg−1 marigold increased the levels of C16:0 and C18:0 and decreased levels of C16:1 (n-7) and C18:1 (n-9) in the egg yolk. Also, diet including marigold increased total saturated fatty acids (SFA) and decreased monounsaturated fatty acids (MUFA) in the egg yolk.

Fatty Acid Composition of Egg Yolk from Chickens Fed a Diet including Marigold (Tagetes erecta L.)