Effect of winter feeding frequency on growth performance, biochemical blood parameters, oxidative stress, and appetite-related genes in Takifugu rubripes
文献类型： 外文期刊
作者： Gao, Xiaoqiang 1 ; Wang, Xinyi 1 ; Wang, Xi 1 ; Li, Hongxu 1 ; Xu, Liang 1 ; Fang, Yingying 1 ; Cao, Shuquan 1 ; Huang, Bin 1 ; Chen, Haibin 3 ; Xing, Rui 3 ; Liu, Baoliang 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisheries, Minist Agr,Qingdao Key Lab Marine Fish Breeding &, Qingdao 266071, Peoples R China
2.Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China
3.Yuhai Hongqi Ocean Engn Co LTD, Rizhao 276800, Peoples R China
关键词： Takifugu rubripes; Feeding regime; Growth performance; Oxidative stress; Appetite-related gene
期刊名称：FISH PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：3.014； 五年影响因子：3.187 ）
ISSN： 0920-1742
年卷期：
页码：
收录情况： SCI
摘要： Tiger pufferfish (Takifugu rubripes) is one of Asia's most economically valuable aquaculture species. However, winter production of this species in North China is limited by low water temperature and unavailability of high-quality feed, resulting in high mortality and low profitability. Therefore, the aim of this study was to evaluate the effect of feeding frequency (F1: one daily meal; F2: two daily meals; F3: four daily meals; F4: continuous diurnal feeding using a belt feeder) on the growth performance, plasma biochemistry, digestive and antioxidant enzyme activities, and expression of appetite-related genes in T. rubripes (initial weight: 266.80 +/- 12.32 g) cultured during winter (18.0 +/- 1.0 degrees C) for 60 days. The results showed that fish in the F3 group had the highest final weight, weight gain rate, specific growth rate, survival rate, and best feed conversion ratio. Additionally, daily feed intake increased significantly with increasing feeding frequency. The protein efficiency and lipid efficiency ratios of fish in the F3 group were significantly higher than those of fish in the other groups. Furthermore, total cholesterol, triglycerides, and glucose levels increased with increasing feeding frequency, peaking in the F2 group and decreasing under higher feeding frequencies. The antioxidant (superoxide dismutase, catalase, glutathione, and glutathione peroxidase) and digestive (trypsin, amylase, and lipase) enzyme activities of fish in the F1 group were significantly higher than those of fish in the F3 and F4 groups. Additionally, there was a decrease in orexin expression with increasing feeding frequency. In contrast, the expression levels of tachykinin, cholecystokinin, and leptin increased with increasing feeding frequency, peaking in the F4 group. Overall, the findings of this study indicated that a feeding frequency of four meals per day was optimal for improved growth performance of pufferfish juveniles cultured during winter.
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