Wijayanto, Dian and Nugroho, Ristiawan Agung and Kurohman, Faik and Nursanto, Didik Budi (2022) The effect of garlic (Allium sativum) supplementation in feed on the growth, survival and profits of Asian seabass (Lates calcarifer) cultivation reared in freshwater media. Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society, 15 (4). pp. 1882-1890. ISSN 1844-8143

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Abstract

Asian seabass (Lates calcarifer) or barramundi is one of the top fish cultivation commodities in
Asia, including in Indonesia. In Indonesia, Asian seabass is usually cultivated in the sea and brackish
water. However, Asian seabass can also be cultivated in fresh water. To optimize the cultivation of Asian
seabass, it is necessary to develop feed supplementation to boost Asian seabass’ immune system by
using immunostimulants which can reduce the fish mortality rate and increase the profitability. This
study was performed to analyse the effect of giving garlic to fish feed on the growth, survival and
profitability of the cultivation of Asian seabass reared in fresh water media. The experiment was carried
out in 50 days using Asian seabass with an average weight of 4.35 g per fish. The study was designed
using a completely randomized design. Fish were reared using fibre ponds with a water volume of 0.5 m3
and filled with 50 fish per pond. In this study, five treatments with two replications for each treatment
were performed. Different contents of garlic were used; 0% in treatment A as control, 0.5% in treatment
B, 1.5% in treatment C, 3% in treatment D and 10% in treatment E. The water quality was measured
weekly which included the measurements of dissolved oxygen (DO), temperature, salinity and pH. The
results of this study indicated that all treatments had significant effect on the survival rate (SR), absolute
biomass growth, specific growth rate (SGR), feed conversion ratio (FCR) and benefit cost ratio (BCR).
Treatment B appeared to have the best outcomes, with an average SR of 78%, an average SGR of
2.30% per day, an average FCR of 1.44 and an average BCR of 3.88. Therefore, 0.93% garlic
concentration is considered the most optimal concentration for SGR, while 0.82% garlic concentration is
more optimal for SR.

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