Use of duckweed (Lemna minor) harvested from IRAS as a partial replacement for fishmeal proteins in barramundi (Lates calcarifer) diets

Mustofa, Ahmad Gufron and Ardiansyah, Ardiansyah and Wahidah, Sri and Mulyati, Mulyati and Hasniar, Hasniar and Indrayani, Indrayani (2022) Use of duckweed (Lemna minor) harvested from IRAS as a partial replacement for fishmeal proteins in barramundi (Lates calcarifer) diets. AACL Bioflux, 15 (4). pp. 1663-1674. ISSN 1844-9166 (online); ISSN 1844-8143 (print)

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Abstract

The optimum inclusion level of fermented duckweed (Lemna minor) in formulating feed for the juvenile barramundi (Lates calcarifer) was evaluated using growth performance, feed utilization, and physiological parameters. The juveniles were randomly stocked at a density of 15.86 kg m-3 in 15 independent integrated recirculating aquaculture systems (IRAS) and fed diets containing 0, 15, 25, 35, and 45% fermented duckweed (diets CD, F1, F2, F3, and F4, respectively). The average weight gain (WG) and protein efficiency ratio (PER) of fish fed-diet F4 were lower (p < 0.05) than those fed diets F1, F2, F3, and CD. Average WG of barramundi juveniles increased in all the dietary treatments when compared to the CD except diet F4. The highest WG and specific growth rate (SGR) were recorded for F2 fish. Fish-fed diet F3 also showed good performance in terms of WG and SGR. PER was highest in fishfed F3 (p < 0.05). PER was lowest in CD-fed fish. Feed conversion ratio (FCR) was lowest for fish-fed F3 and highest for F4 (p < 0.05). With increasing dietary fermented duckweed meal inclusion, glucose and high-density lipoprotein cholesterol (HDL-C) concentrations increased, whereas triglyceride and lowdensity lipoprotein cholesterol (LDL-C) levels decreased. Activities of plasma alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in juvenile barramundi fed the CD and F1 diets were higher (p < 0.05) than in fish fed other experimental diets. Plasma alkaline phosphatase (ALP) activities were lower (p < 0.05) in all duckweed supplemented diets. The highest carcass protein deposition was observed in fish fed F2 diet. These results indicated that F3 diet did not adversely affect the growth or metabolism of juvenile barramundi.

Item Type:	Article
Subjects:	FAKULTAS TEKNIK FAKULTAS TEKNIK > Pendidikan Teknologi Pertanian
Divisions:	FAKULTAS TEKNIK
Depositing User:	Dr. Indrayani Indrayani
Date Deposited:	02 May 2023 04:32
Last Modified:	02 May 2023 04:32
URI:	http://eprints.unm.ac.id/id/eprint/28079

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