Field Document 1
November 1980
| FI:DP/HUN/79/001 Field Document 1 November 1980 |
THE HUNGARIAN PEOPLE'S REPUBLIC
EXPERIMENTS IN EEL CULTURE IN HUNGARY
A report prepared for the
Development of Intensive Freshwater Fish Culture Project
by
Shigeru Arai
Eel culture consultant
This is one of a series of reports prepared during the course of the FAO/UNDP project identified on the title page. The conclusions and recommendations given in the report are those considered appropriate at the time of its preparation. They may be modified in the light of further knowledge gained at subsequent stages of the project.
The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of the United Nations or the Food and Agriculture Organization of the United Nations concerning the legal or constitutional status of any country, territory or sea area, or concerning the delimitation of frontiers.
The eel culture consultancy for FAO Project HUN/79/001 was carried out from 2 June to 1 August 1980 at the Fish Culture Research Institute (Szarvas). Major objectives of the consultancy were: to review on-going research work on eel culture; to assist the research team involved in developing efficient production technology for the experimental intensive eel-pond system designed in 1976; to develop improved eel diets and to assess the feasibility of developing intensive eel culture in Hungary using geothermal energy or warm-water effluents.
It has been stated that since 1976 staff of the Institute made considerable progress in raising eel in plastic tanks in the recycling fish rearing plant. However, intensive rearing of elvers was endangered by the lack of additional aeration of the fish tanks.
Two new experimental outdoor eel-ponds each 150 m2 were stocked with pigmented eels on 29 May 1980 with a density of 0.2 kg/m2 (about 600 pieces/m2). Through the joint efforts of the consultant and the research team involved, the traditional Japanese stagnant water eel culture method was successfully adapted to these ponds in spite of several obstacles caused by delays in construction of the water supply and aeration system.
Modified eel diets have been developed using slaughterhouse wastes and an experimental programme was agreed upon to continue testing of these diets.
The consultant visited Hortobágy State Farm where an existing concrete pond system and two artesian wells are offering year-round fish culturing possibilities. It has been stated that, with some remodelling of the pond system and installation of an appropriate aeration system, the facility could be used efficiently for eel culture, especially for elver raising.
FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Rome, 1980
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1.1 Terms of reference
1.2 Background information
2. EVALUATION OF THE RESEARCH WORK ON EEL CULTURE
2.1 Using the water recycling fish rearing plant 2.2 Using the outdoor experimental ponds
3. CONCLUSIONS AND RECOMMENDATIONS
3.1 Eel feed using locally available ingredients
3.2 Eel culture techniques
3.3 Feasibility of developing intensive eel culture in Hungary using
geothermal energy and warm-water effluent
1. Recommended composition of the basal eel diets
2. Recommended feeding programme for elver rearing
1. Plan of the experimental eel culture pond system
2. Cross section of the experimental pond