Development of aquaculture feed for oxyeleotris marmorata using hermetia illucens pre-pupae biomass

Chin, Yik Chun (2023) Development of aquaculture feed for oxyeleotris marmorata using hermetia illucens pre-pupae biomass. Master dissertation/thesis, UTAR.

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Abstract

Hermetia illucens larvae are well known to be nutritious as a substitute for fish meal in aquaculture due of their high fat and protein content, insect larvae meal can be used as an alternative protein source to fish meal, which will lower production costs and the need for raw materials while also minimizing a number of environmental problems. Hence, this study was aimed to investigate the growth performance of marble goby (Oxyeleotris marmorata) fed with substitute fish oil source obtained from black-soldier fly (Hermetia illucens) at different composition levels. The pre-pupae of Hermetia illucens had sufficient amount of crude lipid (46.83 ± 1.37%) and crude protein (43.84 ± 1.08%) to exhibit healthy growth. The juvenile marble goby was fed with formulated fish diet of HM0, HM40, HM80 and HM120 for 12 weeks containing 15.49- 16.10 MJ/kg of energy, and 45.06 – 47.98% and 9.57 – 10.26% of crude protein and crude lipid content, respectively. The juvenile gained 1.01% to 25.72%, in weight with feed conversion rate of 15.27 to 188.52 and protein efficiency of 0.011 g weight gained/ g protein to 0.137 g weight gained/ g protein. The survival rates displayed by the juvenile were 40% to 80%. Comparatively, the juvenile fed on feed with HM40 exhibited the best result in terms of both ii survival rate of 60.0% and weight gained (17.03%) while retaining 49.06 ± 0.07% of ΣSFA, 27.35 ± 0.12% of ΣPUFA and 23.59 ± 0.09% of ΣMUFA. In overall, the Oxyeleotris marmorata fed with diet HM40 (4% inclusion level of Hermetia illucens pre-pupae meal) showed the best growth performance throughout experimental feeding trial.

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