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Studies on Growth and Mortality of Cyprinus Carpio (lin.) in Floating Ponds

M.A. Hashem
Thana Fisheries Officer, Directorate of Fisheries

M.S. Khan
Thana Fisheries Officer, Directorate of Fisheries

M.A. Quddus
Department of Agricultural Statistics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

Growth and mortality rate of Cyprinus carpio (Linnaeus) under five different dietary conditions were studied in fifteen floating net cages in ponds of the Bangladesh Agricultural University Campus, Mymensingh. Growth rate was found to vary under different dietary conditions. The feed with mixture of 25% rice bran, 5% wheat bran, 30% linseed oil cake and 40% water hyacinth leaf meal exhibited the highest growth rate. The gain of log of body weight per unit increase of log of total length was significant. Significant survivals of the fishes was found.

Keywords: Floating cage, Supplemental feed, Cyprinus carpio

Location: BAU

Start Date: 00-00-1994

End Date: 00-00-1994

Program Area: Animal Health and Management

Commodity: Carp fish

Objectives:

To study the growth response of carpio to various supplementary diets in floating net cages.

Methodology:

Experiment was carried out for five different dietary conditions (Treatment I : rice bran 35% + wheat bran 30% + linseed oil cake 15% + fish meal 20%, Treatment II : rice bran 25% + wheat bran 17% + linseed oil cake 28% + fish meal 10% + ipil-ipil leaf meal 20%, Treatment Ill : rice bran 10% + wheat bran 10% + linseed oil cake 35% + ipil-ipil leaf meal 45%, Treatment IV : rice bran 25% + wheat bran 17% + linseed oil cake 28% + fish meal 10% + water hyacinth leaf meal 20%, an·d Treatment V : rice bran 25% + wheat bran 5% + linseed oil cake 30% + water hyacinth leaf meal 40%) for the period of six months in floating ponds made of synthetic netting materials of mesh size 5.0 mm fitted to a bamboo frame. About 25% protein level was maintained in each treatment. The experiment was carried out for a period of six months in a pond of 3 hectares. Size of each cage was 1 m x 1 m x 2 m. Three hundred fry of C. carpio. belonging to the same age group and more or less similar sizes were stocked in 15 cages. The initial length was 7.36 cm and the initial weight was 5.94 gm. They were conditioned in a portable small plastic pool for 24 hours before being released in the floating ponds. Fishes were stocked at the rate of 20/m³ in each net cage. Feed was supplied once (morning) in 24 hours at the rate of 5% of total body weight of fishes throughout the experimental period. Twenty percent of the fishes in each pond were supplied at random using hand net and their lengths and weights were measured. Sampling was carried out at an interval of 15 days.

Source of Information: Bangladesh J. Fish. Res., 1 (2) : 25-30, 1997

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Growth rate was found to vary under different dietary conditions. The feed with mixture of 25% rice bran, 5% wheat bran, 30% linseed oil cake and 40% water hyacinth leaf meal exhibited the highest growth rate. The gain of log of body weight per unit increase of log of total length was significant. Significant survivals of the fishes was found.

Knowledge Management: Journal