【摘要】 为探明饲料中不同含量维生素E对黄金锦鲤生长、形体、体色和抗氧化指标的影响，在水温20.0～25.0℃下，将平均体质量为(25.96±0.19) g的黄金锦鲤饲养在自动充气循环水箱内，投喂在基础饲料(维生素E含量40 mg/kg,叶黄素含量200 mg/kg)中分别添加0、250、500、750、1000 mg/kg维生素E的5种饲料。6周的养殖结果表明：随着维生素E含量的增加，各处理组黄金锦鲤的终末体质量、质量增加率、特定生长率呈先升后降的趋势，但各组之间差异不显著(P>0.05);各组之间的鱼体成分、体长/体高、体质量/体长、肥满度、脏体比也无显著性差异(P>0.05)。在第2、4周，与对照组相比，当维生素E添加量为250、500 mg/kg时显著提高了黄金锦鲤的黄度(P<0.05),在第2周且添加量为250 mg/kg时，效果最为明显。添加维生素E还可以显著提高黄金锦鲤肝脏过氧化氢酶和超氧化物歧化酶活性(P<0.05)。综合来看，投喂维生素E添加量为250 mg/kg(总维生素E含量为290 mg/kg)的饲料，可以显著增强黄金锦鲤的着色效果(黄色)和抗氧化能力，且投喂2周即可达到较好的着色效果。更多还原

【Abstract】 Juve nile koi Cyprinus carpio was reared in automatic inflatable circulating water tanks and fed 5 types of diets containing 0(basal diet containing 40 mg/kg vitamin E and 200 mg/kg, control group), 250, 500, 750 and 1000 mg/kg vitamin E to investigate the effects of dietary vitamin E levels on the growth, body shape, body color and antioxidant indices of the koi at water temperature of 20.0—25.0 ℃ for 6 weeks. It was found that the final body weight, weight gain and specific growth rate were first increased and then decreased with the increase in dietary vitamin E levels, without significant difference in all groups(P>0.05). There were also no significant differences in body composition, body length/body depth ratio, body weight/body length ratio, condition factor and visceral body ratio(P>0.05). The yellowness(b*) was shown to be significantly improved in the fish fed the diets containing 250 and 500 mg/kg vitamin E compared with the fish in the control group(P<0.05). Moreover, the peak value was observed in group with 250 mg/kg of vitamin E addition at the second weekend.Vitamin E supplementation led to significantly enhance liver catalase and superoxide dismutase activities(P<0.05). In summary, the fish fed diet supplemented with 250 mg/kg vitamin E(total vitamin E content was 290 mg/kg) significantly improved the body color and antioxidant capacity. The better body color effect was observed in 2 weeks.更多还原