초록

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1973년 4월부터 1974년 6월 말까지 뱀장어의 효과적인 초기사육을 위하여 일연의 실험을 한 결과는 다음과 같다. 1. 뱀장어의 초기사육의 최적성장수온은 $20\~34^{\circ}C$의 범위내에서 실험한 결과 $30^{\circ}C$로 나타났다. 2. $20\~30^{\circ}C$ 사이에서 10일간의 성장배수는 R=0.0056296$T^{1.80740}$이라는 곡선식으로 나타났다. 3. 오랫동안 축양하여 두었던 실뱀장어도 채포후 바로 사육하는 것에 비해 성장이 나쁘지 않았다. 4. 사육중 크지 않고 성장이 나빴던 것도 이번 시험사육결과 정상적인 성장을 하였다. 5. ammonia는 5ppm 이하에서는 섭이에 영향을 주지 않으나 6ppm에서는 섭이량이 현저히 줄었다. 6. 뱀장어의 고밀도 사육시 배설물의 제거는 좋은 수질을 유지하는 데 매우 중요하다.

Abstract ▼ AI-Helper

The followings are some results obtained from a series of experiments for the culture of eels from the elver stage in the laboratory from April 1973 to June 1974. 1. The optimum temperature turned out as 30t in the early stage culture. 2. The exponential curve of growth rate for a ten day period at ...

The followings are some results obtained from a series of experiments for the culture of eels from the elver stage in the laboratory from April 1973 to June 1974. 1. The optimum temperature turned out as 30t in the early stage culture. 2. The exponential curve of growth rate for a ten day period at the temperature between $20^{\circ}C$ and $30^{\circ}C$ was represented by the following equation: $$R=0.0056296\;T^{1.80740}$$ 3. The elvers and small eels that were kept improperly for a long time before this experiment also showed the same growth rate, compared with other healthful eels captured directly from the estuarine areas. 4. Those that showed retarded growth among a group of eels during the culture recovered the normal growth rate if graded out and kept in the other aquarium. 5. Feeding rate was not affected when the content of ammonia was less than 5 ppm, but it decreased by half when the content exceeds 6 ppm. 6, The elimination of fecal stuffs and uneaten dispersed feed was very important for the maintaining the water in quality.