Effects of fish feeding rate on green water production in tilapia culture

Roslianah Asdari, (2006) Effects of fish feeding rate on green water production in tilapia culture. Universiti Malaysia Sabah. (Unpublished)

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Abstract

An experiment was conducted to study the effect of fish feeding rate on green water production in tilapia culture. In this study, four treatments in triplicates were conducted that represented by four types of feeding rates which are 0%, 2%, 4% and 6% feeding rate of total body weight. All of the treatments were prepared in 200L fiberglass tanks where each tank: was added with 5ppt green water and stocked with 300g tilapia sized between 2 to 3 inches. Feeding was given following the fixed feeding rate. The cell number of phytoplankton was counted daily for all tanks and the water quality parameters were monitored, such as dissolved oxygen (DO), pH and water temperature. The concentration of phosphate, nitrite and nitrate were also tested. The results showed that the maximum green water achieved at 4% feeding rate and the optimal growing condition for green water was up to the fifth day. However, to get constant production of green water, the feeding rate should be minimize because accumulation of the uneaten feed could cause deterioration affect the water quality. It is suggested that green water culture could be used at the fifth day, either as inoculums for higher volume or as nourishment for invertebrate animals in marine aquaculture program.

Item Type: Academic Exercise
Uncontrolled Keywords: fish feeding rate, green water production, tilapia, marine aquaculture program
Subjects: S Agriculture > SH Aquaculture. Fisheries. Angling
Divisions: SCHOOL > School of Science and Technology
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 10 Feb 2014 10:28
Last Modified: 11 Oct 2017 05:02
URI: http://eprints.ums.edu.my/id/eprint/8141

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