Effects of dietary potassium diformate on growth performance, fillet quality, plasma indices, intestinal morphology and liver health of juvenile golden pompano (Trachinotus ovatus)
文献类型： 外文期刊
作者： Xun, Pengwei 1 ; Zhou, Chuanpeng 1 ; Huang, Xiaolin 4 ; Huang, Zhong 1 ; Yu, Wei 1 ; Yang, Yukai 4 ; Li, Tao 4 ; Huang, Jianbin 1 ; Wu, Yang 1 ; Lin, Heizhao 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Key Lab South China Sea Fishery Resources Exploit, Minist Agr & Rural Affairs, Guangzhou 510300, Peoples R China
2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China
3.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China
4.Chinese Acad Fishery Sci, Shenzhen Base South China Sea Fisheries Res Inst, Shenzhen 518121, Peoples R China
关键词： Trachinotus ovatus; Potassium diformate; Growth performance; Immune function; Intestinal morphology
期刊名称：AQUACULTURE REPORTS （ 影响因子：3.385； 五年影响因子：3.645 ）
ISSN： 2352-5134
年卷期： 2022 年 24 卷
页码：
收录情况： SCI
摘要： This study was conducted to investigate the impacts of potassium diformate (KDF) on growth performance, fillet quality, plasma indices, immune response and intestinal morphology of juvenile Trachinotus ovatus. Six diets with 0 (KDF1), 3.00 (KDF2), 6.00 (KDF3), 9.00 (KDF4), 12.00 (KDF5) and 15.00 (KDF6) g/kg KDF were formulated to feed T. ovatus (average fish weight: 5.87 +/- 0.03 g) for 8 weeks. The results indicated that 3.00 g/kg and 6.00 g/ kg KDF significantly increased the growth parameters of juvenile T. ovatus (P < 0.05), whereas 6.00 g/kg and 9.00 g/kg KDF significantly reduced feed conversion ratio (P < 0.05). KDF level presented a significant improvement on fillet quality of juvenile T. ovatus (P < 0.05). With the increasing levels of KDF, triglyceride and glucose of plasma significantly declined (P < 0.05), whereas high density lipoprotein cholesterol significantly increased (P < 0.05). 6.00 g/kg dietary KDF significantly up-regulated mRNA levels of Nrf2, CAT, CuZn-SOD, MnSOD (P < 0.05) and increased antioxidative enzyme activities in liver (P < 0.05). Furthermore, 6.00 g/kg KDF supplementation significantly enhanced immune function of juvenile golden pompano by regulating the expression levels of hepatic NF-kappa B, TGF-beta, ZO-1, Occludin and Claudin-3a (P < 0.05). 6.00 g/kg KDF significantly improved intestinal morphology compared with KDF1 diets (the control) (P < 0.05). In conclusion, the sup-plement of dietary KDF was beneficial for T. ovatus by promoting growth performance, improving fillet quality and intestinal morphology and enhancing immune response. The optimum supplement level of KDF in T. ovatus diet was 6.58 g/kg based on WGR.& nbsp;& nbsp;
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