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Addition of Olive Pomace to Feeding Substrate Affects Growth Performance and Nutritional Value of Mealworm (Tenebrio Molitor L.) Larvae.

ABSTRACT: The well-recognized efficiency of Tenebrio molitor larvae to convert low quality organic matter into a nutritionally valuable biomass was exploited to manage solid wastes coming from the olive oil industry, which represent a severe environmental challenge in the Mediterranean area. Three organic pomace-enriched substrates (mixtures middlings/pomace 3:1, 1:1, and 1:3) were assessed, together with 100% organic wheat flour and 100% organic middlings as control feeds. A feeding substrate made up of 25% olive pomace and 75% wheat middlings appeared to be the best compromise between growth performance (larval and pupal weights, survival rate, development time) and nutritional properties of mealworm larvae. In fact, larvae fed the 3:1 feed showed the highest dry matter (DM) yield (38.05%), protein content (47.58% DM), and essential/non-essential amino acids ratio (1.16). Fat content (32.14% DM) and fatty acid composition were not significantly different than those of larvae fed more pomace-enriched feeds.

SUBMITTER: Ruschioni S 

PROVIDER: S-EPMC7143744 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Addition of Olive Pomace to Feeding Substrate Affects Growth Performance and Nutritional Value of Mealworm (<i>Tenebrio Molitor</i> L.) Larvae.

Ruschioni Sara S   Loreto Nino N   Foligni Roberta R   Mannozzi Cinzia C   Raffaelli Nadia N   Zamporlini Federica F   Pasquini Marina M   Roncolini Andrea A   Cardinali Federica F   Osimani Andrea A   Aquilanti Lucia L   Isidoro Nunzio N   Riolo Paola P   Mozzon Massimo M  

Foods (Basel, Switzerland) 20200310 3

The well-recognized efficiency of <i>Tenebrio molitor</i> larvae to convert low quality organic matter into a nutritionally valuable biomass was exploited to manage solid wastes coming from the olive oil industry, which represent a severe environmental challenge in the Mediterranean area. Three organic pomace-enriched substrates (mixtures middlings/pomace 3:1, 1:1, and 1:3) were assessed, together with 100% organic wheat flour and 100% organic middlings as control feeds. A feeding substrate made  ...[more]

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