In conjunction with these findings, another research experiment was
conducted in the supporting of these statistics. From 1000 black soldier fly eggs; a
fixed number were subjected to three varying fish offal and cow manure-mixed diets
consisting of homogenized fish heads, viscera, and bony structures from rainbow
trout and the subsequent bovine excrement. The results of this approach led to a
43% increase of total lipid in the black soldier flies fed varying proportions of the
fish offal compared to the control group of exclusively cow manure. In addition, the
levels of omega-3 fatty acids increased (from scant amounts to 3%) in the groups
fed the fish offal. The average prepupae composed of 30% lipid: where with fish
offal-enriched diet-fed larvae acquired 1% of its total dry weight as purely omega 3-
fatty acids (St-Hilaire, Cranfill 2007).
The research had successfully verified that the black soldier fly larvae were
able to efficiently bio-convert a considerable percentage of the fish oils and nutritive
properties present in the fish offal into invaluable omega-3 fatty acids. Thus,
through the supplementation of even a small proportion of fish waste in black
soldier fly diets within 24h of pupation (St-Hilaire, Cranfill 2007).