사육밀도에 따른 쏘가리(Siniperca scherzeri)의 성장 및 체조성 변화
Effect of Stocking Density on the Growth and Body Composition of the Mandarin Fish Siniperca scherzeri
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초록
This study investigated the effects of stocking density on the growth of the mandarin fish Siniperca scherzeri, in small(1-year old, 50.2 g/fish) and large (2-years old, 173.1 g/fish) size (age) groups. Small and large fish groups were fedpelleted diets twice daily for 10 and 15 weeks, respectively. In the small group, at the end of the feeding, the weightgain of fish at a density of 4 kg/m3 was lower than that of fish at densities of 3, 2 and 1 kg/m3. However, fish stockingdensity did not affect feed efficiency. The daily feed intake of fish at a density of 4 kg/m3 was lower than that fish atdensities of 3, 2 and 1 kg/m3. In the large fish group, the weight gain of fish at a density of 4.5 kg/m3 was higher thanthat of fish at densities of 6, 3 and 1.5 kg /m3. Again, fish stocking density did not affect feed efficiency. The dailyfeed intake of fish at a density of 4.5 kg/m3 was higher than that of fish at densities of 6, 3 and 1.5 kg/m3. Based onthese results, the optimum stocking density for small (50.2 g/fish) and large (173.1 g/fish) mandarin fish is 3 and 4.5kg/m3, respectively.
Abstract
This study investigated the effects of stocking density on the growth of the mandarin fish Siniperca scherzeri, in small(1-year old, 50.2 g/fish) and large (2-years old, 173.1 g/fish) size (age) groups. Small and large fish groups were fedpelleted diets twice daily for 10 and 15 weeks, respectively. In the small group, at the end of the feeding, the weightgain of fish at a density of 4 kg/m3 was lower than that of fish at densities of 3, 2 and 1 kg/m3. However, fish stockingdensity did not affect feed efficiency. The daily feed intake of fish at a density of 4 kg/m3 was lower than that fish atdensities of 3, 2 and 1 kg/m3. In the large fish group, the weight gain of fish at a density of 4.5 kg/m3 was higher thanthat of fish at densities of 6, 3 and 1.5 kg /m3. Again, fish stocking density did not affect feed efficiency. The dailyfeed intake of fish at a density of 4.5 kg/m3 was higher than that of fish at densities of 6, 3 and 1.5 kg/m3. Based onthese results, the optimum stocking density for small (50.2 g/fish) and large (173.1 g/fish) mandarin fish is 3 and 4.5kg/m3, respectively.
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