It is becoming increasingly evident that some fatty acids interfere
with the availability and tissue deposition of LC-PUFAs, whereas others
may have the opposite effect. In most cases, C18 PUFA-rich feeds appear
to reduce the availability and deposition of LC-PUFAs in the tissues.
Conversely, in some taxa, feed formulations rich in SFAs appear advantageous
in terms of maintaining tissue fatty acid profile (i.e., attenuating
reductions in LC-PUFA content typically associated with fish oil sparing/
replacement) and, in some cases, effectively reducing the amount of LCPUFAs
needed in the diet to satisfy requirements for these nutrients and
support tissue enrichment