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논문 기본 정보

자료유형
학술저널
저자정보
공병욱 (전북연구원) 김기범 (순천대학교 환경공학과) 김현진 (순천대학교 환경공학과) 송승현 (순천대학교 환경공학과) 서하나 (그린환경종합센터) 박상진 (순천대학교 환경공학과) 정정조 (순천대학교)
저널정보
한국환경기술학회 한국환경기술학회지 한국환경기술학회지 제21권 제2호
발행연도
2020.1
수록면
123 - 130 (8page)

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초록· 키워드

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The purpose of this study is to select the optimal culture materials for the growth of water flea and decide the adoption time of fry by understanding the change of dissolved oxygen in the water environment for ornamental fish culture in mud pond. From the result of determining the water quality according to the culture materials, pH was maintained in the range of 7.1 to 8.3 for all materials and conditions. In the case of fowl droppings, rice straw and fertilizer, the change of DO concentration was relatively small, but in the case of rice bran, fish food and yeast, the DO concentration tended to increase rapidly with time. The concentration of Chl-a was not changed significantly in fowl droppings and rice straw, but it increased rapidly after about 15 days in rice bran, fertilizer, fish food, and yeast. In the case of fowl droppings, the number of daphnia population increased from 5 days with the maximum after 15 days, and then remained stable. In the case of fertilizers, the population was less than 5 inds/10mL, which was the smallest. In the case of rice bran (0.6, 1.0, 3.0 g/L), fish food (0.3, 0.6, 1.0 g/L), and yeast (0.3, 0.6, 1.0 g/L), the number of daphnia increased rapidly after 15 days. There was a tendency that the number of individuals was about 2~3 times higher than that of fowl droppings. Rice straw and fertilizers were not suitable for the culture of water flea. Judging the criteria for the adoption time of the fry based from the DO (5 mg/L or more) and the number of daphnia (more than 5 inds/10mL), it seems appropriate to adopt the fish fry after 10 to 15 days from the fowl droppings addition. However, in the case of rice bran, fish food, and yeast, it is appropriate to adopt the fry about 25 days after addition.

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