CAJ | 학술논문

研究了8个不同糖水平（10％、15％、20％、25％、30％、35％、40％和45％）（1～8组）饲料对吉富罗非鱼幼鱼免疫指标和低温（9℃）条件下血液指标的影响，每个糖水平设3个重复组。经过49 d饲养，试验结果表明，（1）鱼体总抗氧化能力活性随饲料糖水平升高而先升后降；第6组溶菌酶（54．08±7．64） U/mL活性最高；鱼体总超氧化物歧化酶活性随着鱼体摄入糖水平的升高而上升；第6组过氧化氢酶活性（14．20±2．23） U/m L较高，显著高于第1、7、8组（ P＜0．05）。（2）在低温胁迫条件下，摄入高水平糖的鱼体、肝脏和心肌有一定的损伤，血液中各生化指标出现异常现象。
연구료8개불동당수평（10％、15％、20％、25％、30％、35％、40％화45％）（1～8조）사료대길부라비어유어면역지표화저온（9℃）조건하혈액지표적영향，매개당수평설3개중복조。경과49 d사양，시험결과표명，（1）어체총항양화능력활성수사료당수평승고이선승후강；제6조용균매（54．08±7．64） U/mL활성최고；어체총초양화물기화매활성수착어체섭입당수평적승고이상승；제6조과양화경매활성（14．20±2．23） U/m L교고，현저고우제1、7、8조（ P＜0．05）。（2）재저온협박조건하，섭입고수평당적어체、간장화심기유일정적손상，혈액중각생화지표출현이상현상。
A feeding trial was conducted to investigate the effect of immune and serum biochemical response of tilapia (Oreochromis niloticus) juveniles under low temperature (9 ℃)stress .Diets with eight carbohydrate levels (10% ,15% ,20% ,25% ,30% ,35% ,40% ,and 45% ) were fed to tilapia juveniles twice a day for 49 days .The oxidation resistance levels was found to be increased at first and decreased subsequently with increasing dietary carbohydrate levels .The maximal lysozyme activity of 54 .08 U/100 mL was observed in the fish fed the diet containing carbohydrate level of 35% . The total superoxide dismutase was increased with increasing dietary carbohydrate levels .The tilapia fed the diets containing 35% carbohydrate showed significantly (P <0 .05) higher catalase value than the tilapia fed diets containing 10% , 40% and 45% carbohydratedid .Under low temperatures stress ,the liver and cardiac muscles of the fish fed the diet containing high levels of carbohydrates were damaged ,resulting in abnormal serum biochemical indices .