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정우건,김인수,문수경,이상민,정보영,장희숙,Masashi Maita,임동훈 한국수산과학회 2004 Fisheries and Aquatic Sciences Vol.7 No.1
Sweet smelt (Plecoglossus altivelis) were fed four different diets supplemented with either perilla oil (2.0%) rich in 18:3n-3 (CP), and perilla oil and Enteromorpha compressa meal (2.0%) (CPA), soybean oil rich in 18:2n-6 (CO), or soybean oil and algal meal (CA) for 4 weeks. The growth performance, fatty acid composition of muscle, plasma lipid peroxidation and blood components of the sweet smelt were then determined. The specific growth rate and feed efficiency in the fish fed the CPA diet were the highest, while the other groups showed similar results. The fatty acid composition of muscle in sweet smelt reflected the dietary lipids; 18:3n-3 was higher in the fish fed the CP and CPA diets, and 18:2n-6 was higher in the fish fed the CO and CA diets. The other fatty acid profiles presented almost no differences with respect to the diet composition. The fish fed the CA, CP and CPA diets contained significantly lower levels of triglyceride, thiobarbituric acid-reactive substances and hydroxyl radical in their plasma than that fed the CO diet. Phagocytic activity was the highest in the fish fed the CPA diet and higher in those of the fish fed the CP and CA diets compared to the CO diet group. The results from this study suggest that a dietary supplement of 2.0% perilla oil together with 2.0% E. compressa meal may improve the growth and health of cultured sweet smelt.
Moon Soo-Kyung,Jeong Woo-Geon,Kim In-Soo,Jeong Bo-Young,Maita Masashi,Ohshima Toshiaki The Korean Society of Fisheries and Aquatic Scienc 2001 Fisheries and Aquatic Sciences Vol.4 No.4
The effect of $\alpha-Tocopherol\;(\alpha-Toc)$ level in diet on the biochemical property of sweet smelt, Plecoglossus altivelis, was investigated. The cultured sweet smelt fish were fed two different diets for 8 weeks; a control diet was added $0.01\%$ of $\alpha-Toc$ (CO group) and an experimental diet was added $1.00\%$ of $\alpha-Toc$ (HT group). Both diets were rich in docosahexaenoic acid (DHA, 22:6n-3) and eicosapentaenoic acid (EPA, 20:5n-3), accounting for $12.3-13.2\%$ and $12.1-12.4\%$, respectively. Growth rate (GR) and feed efficiency (FE) were almost no difference between both groups, but female fish of both groups were superior to male fish in GR and FE. Lipid contents of muscle and ovary were high in CO group compared with HT group, but that of testis showed a similar level in both groups. The proportion of polyunsaturated fatty acids (PUFA) in muscle showed almost no difference in sex and between both groups. In testes, the proportion of PUFA was 1.35 times for HT group to 1.54 times for CO group as much as in ovaries, in which was high approximately 1.5 times compared with muscle. Thiobarbituric acid-reactive substances (TBARS) and hydroxyl (OH) radical levels of plasma were higher in CO group than HT group and superoxide dismutase activity was also slightly high in the former. The intensity of watermelon-like or cucumber -like aroma was related positively with TBARS and OH radical levels in plasma. The level of triglyceride (TG) and total cholesterol (CHOL) in plasma of CO group was higher than those of HT group. Survival rate was high in CO group with higher level of TG and CHOL in plasma.
Jeong, Bo Young,Moon, Soo Kyung,Jeong, Woo Geon,Ohshima, Toshiaki,Maita, Masashi 한국수산학회 2001 Fisheries and Aquatic Sciences Vol.4 No.4
The effect of perilla oil added in diet on the biochemical properties of cultured sweet smelt, Plecoglossus altivelis, was investigated. The cultured fish were fed two different diets for 8 weeks; a control diet was a commercial diet, which was low in the content of docosahexaenoic acid (DHA, 22:6n-3) and eicosapentaenoic acid (EPA, 20: 5n-3) less than approximately 2% (CO group) and an experimental diet (PO group) was added perilla oil as a lipid source in the diet of the CO group. The PO group was superior in growth rate and feed efficiency compared with CO group. This trend showed markedly in female of both groups. The fatty acid composition in the muscle of PO group was closely related with those of the diet, while those of CO group were not. For plasma components, total cholesterol (CHOL) of PO group was higher than that of CO group. Thiobarbituric acid-reactive substances (TBARS), hydroxyl (OH) radical levels and superoxide dismutase (SOD) activity of plasma were higher in PO group than CO group. The intensity of watermelon-like or cucumber-like aroma was much stronger in PO group with higher level of TBARS and OH radical in plasma compared CO group. Survival rate was also high in PO group with high levels of phagocytic rate, CHOL and SOD activity. These results suggest that perilla oil might be usefulness as a lipid source of the cultured sweet smelt diet, in which result in high quality of the cultured fish.
Kim, In Soo,Jeong, Bo Young,Moon, Soo Kyung,Jeong, Woo Geon,Ohshima, Toshiaki,Maita, Masashi 한국수산학회 2001 Fisheries and Aquatic Sciences Vol.4 No.4
The effect of α-tocopherol (α-Toc) level in diet on the biochemical property of sweet smelt, Plecoglossus altivelis, was investigated. The cultured sweet smelt fish were fed two different diets for 8 weeks; a control diet was added 0.01% of α-Toc (CO group) and an experimental diet was added 1.00% of α-Toc (HT group). Both diets were rich in docosahexaenoic acid (DHA, 22:6n-3) and eicosapentaenoic acid (EPA, 20:5n-3), accounting for 12.3∼13.2% and 12.1∼12.4%, respectively. Growth rate (GR) and feed efficiency (FE) were almost no difference between both groups, but female fish of both groups were superior to male fish in GR and FE. Lipid contents of muscle and ovary were high in CO group compared with HT group, but that of testis showed a similar level in both groups. The proportion of polyunsaturated fatty acids (PUFA) in muscle showed almost no difference in sex and between both groups. In testes, the proportion of PUFA was 1.35 times for HT group to 1.54 times for CO group as much as in ovaries, in which was high approximately 1.5 times compared with muscle. Thiobarbituric acid-reactive substances (TBARS) and hydroxyl (OH) radical levels of plasma were higher in CO group than HT group and superoxide dismutase activity was also slightly high in the former. The intensity of watermelon-like or cucumber-like aroma was related positively with TBARS and OH radical levels in plasma. The level of triglyceride (TG) and total cholesterol (CHOL) in plasma of CO group was higher than those of HT group. Survival rate was high in CO group with higher level of TG and CHOL in plasma.
Jeong, Woo-Geon,Moon, Soo-Kyung,Jeong, Bo-Young,Jang, Whei-Sook,Kim, In-Soo,Maita, Masashi,Lim, Dong-Hoon,Lee, Sang-Min 한국수산학회 2004 Fisheries and Aquatic Sciences Vol.7 No.1
Sweet smelt (Plecoglossus altivelis) were fed four different diets supplemented with either perilla oil (2.0%) rich in 18:3n-3 (CP), and perilla oil and Enteromorpha compressa meal (2.0%) (CPA), soybean oil rich in 18:2n-6 (CO), or soybean oil and algal meal (CA) for 4 weeks. The growth performance, fatty acid composition of muscle, plasma lipid peroxidation and blood components of the sweet smelt were then determined. The specific growth rate and feed efficiency in the fish fed the CPA diet were the highest, while the other groups showed similar results. The fatty acid composition of muscle in sweet smelt reflected the dietary lipids; 18:3n-3 was higher in the fish fed the CP and CPA diets, and 18:2n-6 was higher in the fish fed the CO and CA diets. The other fatty acid profiles presented almost no differences with respect to the diet composition. The fish fed the CA, CP and CPA diets contained significantly lower levels of triglyceride, thiobarbituric acid-reactive substances and hydroxyl radical in their plasma than that fed the CO diet. Phagocytic activity was the highest in the fish fed the CPA diet and higher in those of the fish fed the CP and CA diets compared to the CO diet group. The results from this study suggest that a dietary supplement of 2.0% perilla oil together with 2.0% E. compressa meal may improve the growth and health of cultured sweet smelt.