Effect of Dietary Vitamin C Supplementation on Growth Performance and Biochemical Parameters in Grower Walleye Pollock, Gadus chalcogrammus

被引:1
|
作者
Lee, Ki Wook [1 ]
Yoo, Hae Kyun [1 ]
Kim, So-Sun [1 ]
Han, Gyeong Sik [1 ]
Jung, Min Min [1 ]
Kim, Hee Sung [2 ]
机构
[1] Natl Res Inst Fisheries Sci, East Sea Fisheries Res Inst, Aquaculture Ind Res Div, Kangnung 25435, South Korea
[2] Gyeongsang Natl Univ, Dept Marine Biol & Aquaculture, Tongyeong 53064, South Korea
来源
ANIMALS | 2024年 / 14卷 / 07期
关键词
walleye pollock; vitamin C; growth performance; biochemical parameters; ASCORBIC-ACID; IMMUNE-RESPONSES; INNATE IMMUNITY; TOR; LEVEL; L-ASCORBYL-2-POLYPHOSPHATE; REQUIREMENTS; EXPRESSION; RESISTANCE; SELENIUM;
D O I
10.3390/ani14071026
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
The optimal dietary vitamin C (VC) levels for walleye pollock (Gadus chalcogrammus) remain undefined. This study aimed to assess the effect of dietary VC levels on the growth performance and biochemical parameters of grower walleye pollock and determine the optimal VC level for their diet. Six experimental diets (VC0, VC1, VC3, VC5, VC7, and VC10) with VC levels of 3.24, 21.92, 63.31, 101.42, 145.46, and 202.51 mg kg(-1) diet, respectively, were fed to fish (initial mean weight: 173.5 +/- 0.31 g) for 8 weeks. At the end of the feeding trial, fish fed the VC7 and VC10 diets exhibited significantly higher growth (final body weight, weight gain, and specific growth rate) and improved feed utilization (feed efficiency and protein efficiency ratio) compared with fish fed the VC0 diet (p < 0.05). The VC3-VC10 diets significantly reduced plasma superoxide dismutase (SOD) activity (p < 0.05). Compared with the VC0 group, fish fed the VC7 and VC10 diets showed significantly elevated growth hormone and insulin-like growth factor-1 levels in plasma (p < 0.05). In conclusion, dietary VC supplementation in walleye pollock improved growth performance and SOD activity. Moreover, broken-line analysis on weight gain indicated that the optimal dietary VC level for grower walleye pollock was approximately 156.42 mg kg(-1) diet.
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页数:11
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