Viral Nervous Necrosis (VNN) disease control using diffrent concentration of fucoidan in the rearing water of asian seabass jevenile, Lates Calcarifer

Ho, Sie Khee (2010) Viral Nervous Necrosis (VNN) disease control using diffrent concentration of fucoidan in the rearing water of asian seabass jevenile, Lates Calcarifer. Universiti Malaysia Sabah. (Unpublished)

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Abstract

VNN can be categorized as one of the serious problem in larval production and cause mass mortality in grouper and Asian seabass, Lates calcarifer. VNN occurs during the larval and early juvenile period as early at 5 dAH up to 45 dAH and can causes mass mortalities up to 100%. In UMS fish hatchery, VNN had occurred in every batch of Asian seabass production. Mass mortalities occurred up to 100%. This study was carried out to determine the possibility of using Fucoidan to control VNN disease occurrence in L. calcarifer juvenile with optimum Fucoidan concentration. Early stage of L. calcarifer juvenile which affected by VNN from UMS hatchery's rearing tank was real in different 7L tank with different concentration of Fucoidan given daily. In the present study, the survival rate of L. calcarifer juvenile was 0% in control while 20 ml/ton, 40 ml/ton, 80 ml/ton and 120 mlhon had the survival rate of 12.78 %, 25.00 %, 45.55 %, and 9.44 % respectively. This study proved that Fucoidan can control clinical signs associated VNN disease in L. calcarifer juvenile with the optimum concentration of 80 ml/tonne. L. calcarifer juvenile shows healthy appearance such as swim normally after Fucoidan treatment.

Item Type:Academic Exercise
Uncontrolled Keywords:lates calcarifer, Viral Nervous Necrosis(VNN), fucoidan, larval production, grouper, juvenile period
Subjects:S Agriculture > SH Aquaculture. Fisheries. Angling
Divisions:SCHOOL > School of Science and Technology
ID Code:12999
Deposited By:IR Admin
Deposited On:30 Jun 2016 09:57
Last Modified:30 Jun 2016 09:57

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