The effects of cod oil juice concentration on the survival and growth rate of Hoi Tai Kai, Lutjanus rivulatus larvae

Koh, Ivan Chong Chu (2006) The effects of cod oil juice concentration on the survival and growth rate of Hoi Tai Kai, Lutjanus rivulatus larvae. Universiti Malaysia Sabah. (Unpublished)

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Abstract

Blubberlip snapper, Lutjanus rivulatus is a popular marine fish that taste like chicken. Commercial culture of Lutjanus rivulatus has been hampered by the mass mortality in early larvae stage. This experiment uses cod oil juice as fust feeding. A total of 2 experiments were conducted. Each experiment had 2 replicates. In the first experiment, 100 tails of 1dAH larvae were cultured respectively in 7 liter aquarium at a salinity of 32 ppt and water volume of 6 liters. The larvae were fed cod oil juice daily at concentrations of 0, 0.2, 0.4, 0.6, 0.8ml/l, respectively in triplicates. In the experiment 0ml/l concentration functioned as the control. Results indicated that mean survival rate was the highest in 0.4ml/l. Larvae survived till 6dAH only. In second experiments, all culture conditions were similar except the concentration of cod oil juice fed to larvae. In this experiment, larvae were fed cod oil juice daily at concentrations of 0, 0.3, 0.4,0.5, 0.6 and 0.7ml/l, respectively in triplicates. Results indicated addition of cod oil juice at any concentrations helped improve survival rate and growth rate. Mean survival rate and mean growth rate was the highest in 0.4ml/l which was not significantly different from 0.3ml/l. The lowest mean survival and growth rate was in control group in which no cod oil juice was added. It was significantly different (P < 0.05) than all the other concentrations. However, larvae only survived until 6dAH in all concentrations. This study recommends that the addition of 0.4ml/l of cod oil juice in Lutjanus rivulatus larvae culture as supplementary feed for increased survival and growth rate.

Item Type: Academic Exercise
Uncontrolled Keywords: Lutjanus rivulatus, Blubberlip snapper, marine fish, larvae stage, cod oil juice, supplementary feed
Subjects: S Agriculture > SH Aquaculture. Fisheries. Angling
Divisions: SCHOOL > School of Science and Technology
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 31 Dec 2013 03:28
Last Modified: 11 Oct 2017 02:47
URI: http://eprints.ums.edu.my/id/eprint/7605

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