CAJ | 학술논문

为研究 EPA 和 DHA 对黄鳝脂类代谢、生长及繁殖性能的影响，用添加有 EPA 和 DHA 比例相同(EPA/DHA=0.35)但水平不同(EPA和DHA总量分别为0.00%、0.35%、0.70%)的3种等氮等脂肪饲料，在常温(22-30℃)下，分别喂养平均体重为(21.71±0.54) g的黄鳝7周，分析黄鳝脂类代谢和生长性能，然后每组取15尾继续养殖至性腺发育成熟用于繁殖性能分析。结果表明：在饲料中添加0.70%的EPA和DHA 能促进黄鳝生长，显著提高黄鳝的特定生长率(SGR)及肌肉粗蛋白含量，降低肝体指数(HSI)及肌肉、肝脏中的粗脂肪含量(P<0.05)，显著提高亲鳝的性体指数(GSI)、产卵量、孵化率、幼苗的存活指数(SAI)(P<0.05)。添加0.35%的EPA和DHA能显著降低肝脏中粗脂肪含量(P<0.05)。综合分析表明： EPA和DHA能促进黄鳝的脂类代谢，显著提高其生长及繁殖性能；饲料中添加0.70%的EPA和DHA较为适宜。
위연구 EPA 화 DHA 대황선지류대사、생장급번식성능적영향，용첨가유 EPA 화 DHA 비례상동(EPA/DHA=0.35)단수평불동(EPA화DHA총량분별위0.00%、0.35%、0.70%)적3충등담등지방사료，재상온(22-30℃)하，분별위양평균체중위(21.71±0.54) g적황선7주，분석황선지류대사화생장성능，연후매조취15미계속양식지성선발육성숙용우번식성능분석。결과표명：재사료중첨가0.70%적EPA화DHA 능촉진황선생장，현저제고황선적특정생장솔(SGR)급기육조단백함량，강저간체지수(HSI)급기육、간장중적조지방함량(P<0.05)，현저제고친선적성체지수(GSI)、산란량、부화솔、유묘적존활지수(SAI)(P<0.05)。첨가0.35%적EPA화DHA능현저강저간장중조지방함량(P<0.05)。종합분석표명： EPA화DHA능촉진황선적지류대사，현저제고기생장급번식성능；사료중첨가0.70%적EPA화DHA교위괄의。
A feeding experiment was conducted to investigate the influences of EPA and DHA of dietary lipids on lipids metabolism, growth and reproductive performance of rice field eel (Monopterus albus Zuiew). Fishes of which the av-erage weight was (21.71±0.54) g were fed with three isonitrogenous and isolipidic experimental diets with the same EPA/DHA ratios (EPA∶DHA=0.35) but different amount of EPA and DHA (0.00%, 0.35%and 0.70%, respectively) for seven weeks at room temperature ranging from 22℃ to 30℃, then the lipid metabolism and growth performance were analyzed. After that fifteen fishes from each group were took to keep until gonadal maturation for reproductive performance analysis. Results showed that the diet containing 0.70%of EPA and DHA could promote the growth of rice field eels and significantly increased the specific growth rate (SGR) and the protein content of muscle, but decreased the hepatoso-matic index (HSI) and the fat content of liver and muscle (P<0.05). Significant increments of spawning quantity, gona-dosomatic index (GSI), hatch rates, survival activity index (SAI) were found in the diet containing 0.70% of EPA and DHA (P<0.05). No effects were observed on growth performance of rice field eel fed with the diet containing 0.35%of EPA and DHA, while such diet significantly decreased the fat content of liver (P<0.05). In conclusion, the EPA and DHA can promote lipids metabolism and improve the growth and reproductive performance of rice field eel (Monop-terus albus Zuiew). In the condition of this experiment, the optimal additive amount of EPA and DHA was 0.70%.