Effect of Feeding Frequencies on Growth and Profit of Asian Seabass (Lates calcarifer) in Cage Culture Systems

Priya, N P and Joseph, Shoji and Ajith Kumar, P B and Sunithakumari, K and Smina, M S (2021) Effect of Feeding Frequencies on Growth and Profit of Asian Seabass (Lates calcarifer) in Cage Culture Systems. Journal of Aquatic Biology and Fisheries, 9. pp. 165-170. ISSN 2321-340X

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Abstract

Cage culture is one of the most advanced aquaculture production systems where fishes are held in floating enclosures like net cages, moored in the open water systems, and allow free water flow. The open water cages developed by Central Marine Fisheries Research Institute (CMFRI) during the last decade are becoming very popular in coastal waters. One of the major problems faced by farmers at all stages of culture is fish feed and feeding. A suitable feeding strategy is important to improve fish growth and reduce feed costs and environmental pollution. The study was conducted to investigate the effect of feeding frequency from sea bass cultured in cages on water quality, growth parameters, survival rate, economic return and bottom characters in Moothakunnam (N10011.478’ E076011.901’+ 4m) in Ernakulam district. Water and sediment samples and growth parameters were collected and analyzed monthly from inside and outside of the cages for a period of one year. Significant differences were found in growth parameters like weight gain (1.04±0.03-1.78±0.008), Specific growth rate (1.2±0.03-1.48±0.005), Survival rate (40%-61.53%) and FCR (4.3-4.56). The water quality parameters DO, Nitrate, Nitrite, Ammonia and Orthophosphate in the cage and reference sites did not show many significant variations indicating a healthy growth condition in the cages. Therefore it could be concluded that the growth performance of sea bass is increasing by feeding frequency, but the economic analysis indicated that net profit is negatively related to feeding frequency.

Item Type:	Article
Uncontrolled Keywords:	Cage culture; Feeding frequency; Growth parameters; Water quality; Economic analysis
Subjects:	Aquaculture > Cage culture Food and Feeding Aquaculture > Seabass
Divisions:	CMFRI-Kochi > Mariculture Division Subject Area > CMFRI > CMFRI-Kochi > Mariculture Division CMFRI-Kochi > Mariculture Division Subject Area > CMFRI-Kochi > Mariculture Division
Depositing User:	Arun Surendran
Date Deposited:	20 Jun 2023 08:35
Last Modified:	20 Jun 2023 08:39
URI:	http://eprints.cmfri.org.in/id/eprint/17095

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