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Effects of Supplementary Feed on the Grass Carp(ctenopharyngodon Della )

M. M. Islam
Department of Aquaculture and Management, Bangladesh Agricultural University, Mymensingh

M. Das
Department of Aquaculture and Management, Bangladesh Agricultural University, Mymensingh

S. Dewan
Department of Aquaculture and Management, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

The effects of supplementary feeds on the growth of grass carp in six artificial ponds for a period of six months were studied. The fish were fed with duckweed, supplementary feed (50% mustard oil cake and 50% rice bran) water hyacinth separately in duplicates. The growth rate of fish was highest when fed with duckweed and lowest when fed with water hyacinth. Average per day growths were found 0.128 cm and 3.07 g, 0.09 cm and 1.86 g and 0.08 cm and 1.24 g by feeding with duckweed supplementary feed and water hyacinth, respectively. The highest rate of survival and production of the fish was recorded under duckweed and that of lowest was recorded under water hyacinth. Among the non-conventional feeds tested, duckweed was found suitable for culture of Ctenopharyngodon idella in this country.

Keywords: Growth, Production, Feeding System

Location: Mymensingh

Start Date: 01-06-1987

End Date: 01-12-1987

Program Area: Resource Development and Management

Commodity: Carp fish

Objectives:

To determine the effects of duckweeds. water hyacinth and conventional feeds consisting of mustard oil cake an d rice bran (50%+ 50%) on the growth, survival and production potential of C. idella.

Methodology:

The experiment was conducted for a period of six months from first June 1987 to first December 1987 in six experimental pond at the Bangladesh Agricultural University, Mymensingh. The ponds were rectangular in shape each with an area of 85 square meter and without inlet and outlet. The depth of water varies from one to one and a half meter depending upon the rainfall during the period of the experiment. The ponds were wholly rainfed. The various constituents such as percentage of moisture, ash, crude protein crude fibre, fat and carbohydrates of supplementary feed, duckweed and water hyacinth were determined.

Source of Information: Bangladesh J. Agril Sci, 20 (2): 323-329 July, 1993

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The highest rate of production and survival were recorded in the treatment 1 and the lowest values of the same were recorded in treatment 3. The survival rate recorded in the treatment 2 was very close to the treatment 1. The production recorded in treatment 2, where the fish was fed with supplementary feed was nearly half of the production obtained in treatment 1, where the fish was fed with duckweed. From all these findings of the present study it can be concluded that among the non conventional feeds. aquatic weeds specially the duckweed can be utilized effectively for maximizing the production of C. idella.

Knowledge Management: Journal