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Agri-Food Side-Stream Inclusion in The Diet of Alphitobius Diaperinus. Part 2: Impact on Larvae Composition

1
Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium
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Department of Food and Drug, University of Parma, 43121 Parma, Italy
3
Protifarm, Harderwijkerweg 141B, 3852 AB Ermelo, The Netherlands
*
Author to whom correspondence should be addressed.
Insects 2020, 11(3), 190; https://doi.org/10.3390/insects11030190
Received: 22 January 2020 / Revised: 12 February 2020 / Accepted: 11 March 2020 / Published: 17 March 2020
Insects are gaining interest as an alternative protein source for feed/food purposes. Although the lesser mealworm (LM) is commercially produced for human consumption, published data on its nutrient composition is scarce. This study reports on LM larvae reared on 18 different diets composed of side-streams to (1) determine the nutritional composition of the larvae and (2) study the effect of dietary changes on the larval nutrient composition. The LM larvae proved to be of good nutritional value with essential amino acids profiles comparable with that of beef and linoleic acid (C18:2) was the most dominant essential fatty acids in the larvae. The side-stream based diets varied on dry matter basis in protein (16–34%) and lipid content (2–19%). The nutrient content of the larvae reared on diets that supported good growth ranged between 37% and 49% of protein, 22% and 26% of lipid and 4% to 6% of chitin on dry matter basis. No significant correlations were identified between the larval protein or lipid content and that of the diet, but it was found between the diet nutrients and larval growth. Based on larval growth data and economic considerations, diets composed of wheat middlings with a 10–15% inclusion of rapeseed meal were identified as suitable feed for LM. Highest larval yields were obtained with diets containing 15–22% of proteins and 5–10% of lipids. View Full-Text
Keywords: lesser mealworm; correlation; proteins; lipids; amino acids; fatty acids; larval composition; composition of side streams; nutritional value lesser mealworm; correlation; proteins; lipids; amino acids; fatty acids; larval composition; composition of side streams; nutritional value
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Soetemans, L.; Gianotten, N.; Bastiaens, L. Agri-Food Side-Stream Inclusion in The Diet of Alphitobius Diaperinus. Part 2: Impact on Larvae Composition. Insects 2020, 11, 190.

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