Using black soldier fly larvae as feed for Thai frog (Rana rugosa Temminck and Schlegel, 1838) – Preliminary study of the effect on production parameters

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2023
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Nghia, Vo D.
Lan, Pham T.P.
Tram, Nguyen D.Q.
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75
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Abstract
This study aimed to evaluate the effect of the inclusion of either fresh or dried black soldier fly larvae (BSFL) in diets on the production parameters and chemical composition of Thai frogs (Rana rugosa) cultured in net cages. Frog fingerlings have an initial weight of 20.4 g and were distributed randomly into fifteen net cages (2 x 3 x 1.5 m) at a density of 240 frog.net cage-1. Including five dietary treatments named: T1 (100% commercial feed used as a control), T2 (100% dried BSFL), T3 (50% dried BSFL + 50% commercial feed), T4 (50% fresh BSFL + 50% commercial feed), and T5 (100% fresh BSFL) with three replicates for each treatment. The results showed that the survival rate of frogs ranged from 64.3% to 87.0%, improved feed conversion ratio (1.43 to 1.90%), increased live weight (194.7 – 244.6 g), daily weight gain (2.9 – 3.7 g.day-1), and frog’s yield (6.30 – 7.96 kg.m-2). The contents of crude protein (18.21 – 23.19%), ether extract (0.28 – 0.53%), and total ash (0.99 – 1.05%) of frog meat in this study were affected by the inclusion of either fresh or dried BSFL in the diets of frogs. In recommendation, the diet comprised from 50% fresh BSFL + 50% commercial feed could be applied successfully in Thai frog cage production.
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Black soldier fly larvae, growth, meat quality, Thai frog, Vietnam
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https://hdl.handle.net/10524/73276
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null pages
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The Israeli Journal of Aquaculture - Bamidgeh
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Volume 75, Issue 2, 2023
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