Blood Physiological Changes and Gene Expression on Walleye Pollock Gadus Chalcogrammus Stress Response to Salinity Fluctuation

JEON, So-Hee; Choi, Jin; KIM, Ki-Tae; Byun, Soon‐Gyu; Lim, Hyun-Jeong; KIM, Lee-Kyung; SOHN, Saebom

doi:10.13000/jfmse.2022.12.34.6.1140

Cited by 1 publication

(1 citation statement)

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“…Walleye pollock is a widely consumed fish in Korea, popular for its mild flavor and versatility in various culinary preparations [5]. In response to declining catches, Korea is actively advancing reliable aquaculture production technology [6,7] to promote conservation efforts and sustainably manage this species.…”

Section: Introductionmentioning

confidence: 99%

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

Lee,

Yoo,

Kim

et al. 2024

Animals

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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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Section: Introductionmentioning

confidence: 99%