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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1996.11
- 수록면
- 353 - 361 (9page)
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The objective of this study was to investigate the essential fatty acids requirement and its optimal level in dietary for young of tiger puffer.
The young puffer fish used in feeding trial were average body weight 3.45g. Fish were randomly divided into 11 groups containing 30 fish each in 200 ℓ tank and reared for 8 weeks at ambient temperature. In basal diets, defatted squid meal, casein-Na and activated gluten were used as the dietary protein source, dextrin and α-starch (gelatinized starch) as the digestible carbohydrate source and beef tallow as the lipid source. Five fatty acids added to diet were linoleic acid (LA), linolenic acid (LNA), eicosapentaenoic acid (EPA), docos-ahexaenoic acid (DHA) and n-3 HUFA. Among that, the supplement of LA and LNA were 1% of total composition of diet, respectively, and EPA, DHA and n-3 HUFA ranged from 0.3~1% level. Growth and feed efficiency were measured to the interval of 2 weeks, and analyzed fatty acids composition of diet and liver by GCL.
As a result of 8 weeks experiment, predominant growth were shown in 0.5~1% n-3 HUFA and 0.5% DHA than others (P<0.05). In comparison of efficiency among EPA, DHA and n-3 HUFA groups, the most results were revealed in n-3 HUFA and the least in EPA. The adding effect was shown in EPA by increasing the fatty acids content from 0.5 to 1% in diet.
However, sudden decline and steady state in growth were observed in 1% DHA and 1% n-3 HUFA, respectively. The feeding efficiency and protein efficiency ratio were high in n-3 HUFA groups and 0.5% DHA. Consequently, it is assumed that young puffer requires n-3 HUFA both EPA and DHA as essential fatty acids. The optimal content in diets are about 0.5% of HUFA or DHA.
The young puffer fish used in feeding trial were average body weight 3.45g. Fish were randomly divided into 11 groups containing 30 fish each in 200 ℓ tank and reared for 8 weeks at ambient temperature. In basal diets, defatted squid meal, casein-Na and activated gluten were used as the dietary protein source, dextrin and α-starch (gelatinized starch) as the digestible carbohydrate source and beef tallow as the lipid source. Five fatty acids added to diet were linoleic acid (LA), linolenic acid (LNA), eicosapentaenoic acid (EPA), docos-ahexaenoic acid (DHA) and n-3 HUFA. Among that, the supplement of LA and LNA were 1% of total composition of diet, respectively, and EPA, DHA and n-3 HUFA ranged from 0.3~1% level. Growth and feed efficiency were measured to the interval of 2 weeks, and analyzed fatty acids composition of diet and liver by GCL.
As a result of 8 weeks experiment, predominant growth were shown in 0.5~1% n-3 HUFA and 0.5% DHA than others (P<0.05). In comparison of efficiency among EPA, DHA and n-3 HUFA groups, the most results were revealed in n-3 HUFA and the least in EPA. The adding effect was shown in EPA by increasing the fatty acids content from 0.5 to 1% in diet.
However, sudden decline and steady state in growth were observed in 1% DHA and 1% n-3 HUFA, respectively. The feeding efficiency and protein efficiency ratio were high in n-3 HUFA groups and 0.5% DHA. Consequently, it is assumed that young puffer requires n-3 HUFA both EPA and DHA as essential fatty acids. The optimal content in diets are about 0.5% of HUFA or DHA.
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