Apparent in vivo activity (nmol g−1 day−1) of the key enzymes in fatty acid biosynthesis pathways in rainbow trout fed with the two experimental diets with (H-Chol) or without (L-Chol) cholesterol fortification.

Data are presented as a mean ± s.e.m., n = 3, N = 6. P value: ns = not significant,* = P** = P1See Table 1 for experimental diet abbreviations.2D9fad = fatty acid ▵-9 desaturase.3D6fad = fatty acid ▵-6 desaturase.4D5fad = fatty acid ▵-5 desaturase.5Elovl5 & Elovl2 = fatty acid elongase (−5 and −2).