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.
金鑫, 卢正义, 张媛媛, 崔培, 孙金辉, 乔秀亭, 程镇燕. 维生素E对黄金锦鲤生长、抗氧化指标及体色的影响[J]. 水产科学, 2023, 42(6): 1040-1046.
JIN Xin, LU Zhengyi, ZHANG Yuanyuan, CUI Pei, SUN Jinhui, QIAO Xiuting, CHENG Zhenyan. Effect of Dietary Levels of Vitamin E on Growth Performance, Antioxidant Indices and Body Color of Koi Cyprinus carpio. Fisheries Science, 2023, 42(6): 1040-1046.
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2023, Vol. 42 
