a decreasing trendp = 0.094
There existed an increasing trend in the content of LA (p = 0.087), ALA (p = 0.028), EPA (p = 0.015), DHA (p = 0.036), PUFA (p = 0.079), and n-3 PUFA (p = 0.029) but not monounsaturated fatty acids in the yolk and a decreasing trend in the ratio of n-6/n-3 (p = 0.094) (data not shown).