배합사료의 단백질 및 지질 함량이 어린 돌기해삼 Stichopus japonicus의성장 및 체조성에 미치는 영향 (Effects of Dietary Protein and Lipid Levels on Growth and BodyComposition of Juvenile Sea Cucumber Stichopus japonicus)

서지정보

· 발행기관 : 한국양식학회
· 수록지 정보 : 한국양식학회지 / 21권 / 1호 / 19 ~ 25페이지
· 저자명 : 서주영, 최진, 김근업, 조성수, 박흠기, 이상민

초록

We investigated the proper dietary protein and lipid levels for growth and body composition of juvenile sea
cucumber Stichopus japonicus. Three replicate groups of the sea cucumber (average weight of 1.1 g) were fed the
experimental diets containing different levels of protein (10, 20, 30 and 40%) and lipid (3, 7 and 11%) for 10
weeks. At the end of the feeding trial, survival of each group was over 87%, and there was no significant difference
among the groups. Weight gain and specific growth rate (SGR) of sea cucumber were significantly affected by
dietary protein (P<0.005) and lipid levels (P<0.001). The highest weight gain and SGR were observed when sea
cucumber fed the diet containing 30% protein with 3% lipid (P<0.05). Weight gain and SGR of the sea cucumber
fed the diet containing 3% lipid were higher than the other groups at the same protein level except for 40% protein
group (P<0.05). Protein content of the sea cucumber fed the diet containing 30% protein with 3% lipid was significantly
(P<0.05) higher than those fed 20% protein diets with 7% or 11% lipids and 10% protein diet with 7%
lipid. Moisture, lipid and ash contents of the whole body were not significantly different among the groups. Fatty
acid compositions such as linoleic acid, EPA (20:5n-3) and DHA (22:6n-3) of the whole body were affected by
those of dietary lipid sources. The results of this study indicate that the diet containing 30% protein and 3% lipid
is optimal for growth of juvenile sea cucumber.

영어초록

We investigated the proper dietary protein and lipid levels for growth and body composition of juvenile sea
cucumber Stichopus japonicus. Three replicate groups of the sea cucumber (average weight of 1.1 g) were fed the
experimental diets containing different levels of protein (10, 20, 30 and 40%) and lipid (3, 7 and 11%) for 10
weeks. At the end of the feeding trial, survival of each group was over 87%, and there was no significant difference
among the groups. Weight gain and specific growth rate (SGR) of sea cucumber were significantly affected by
dietary protein (P<0.005) and lipid levels (P<0.001). The highest weight gain and SGR were observed when sea
cucumber fed the diet containing 30% protein with 3% lipid (P<0.05). Weight gain and SGR of the sea cucumber
fed the diet containing 3% lipid were higher than the other groups at the same protein level except for 40% protein
group (P<0.05). Protein content of the sea cucumber fed the diet containing 30% protein with 3% lipid was significantly
(P<0.05) higher than those fed 20% protein diets with 7% or 11% lipids and 10% protein diet with 7%
lipid. Moisture, lipid and ash contents of the whole body were not significantly different among the groups. Fatty
acid compositions such as linoleic acid, EPA (20:5n-3) and DHA (22:6n-3) of the whole body were affected by
those of dietary lipid sources. The results of this study indicate that the diet containing 30% protein and 3% lipid
is optimal for growth of juvenile sea cucumber.

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