Effects of different protein and lipid levels on the growth performance, intestinal health and intestinal microflora of pikeperch (Sander lucioperca) juvenile

文献类型： 外文期刊

第一作者： Zhao, Jie

作者： Zhao, Jie;Liu, Yang;Sun, Zhipeng;Wang, Liansheng;Fan, Ze;Liu, Tianqi;Zhang, Kexin;Xu, Yihua;Zheng, Xianhu;Lu, Cuiyun;Zhao, Jie;Xu, Yihua;Zheng, Xianhu;Lu, Cuiyun

作者机构：

关键词： Pikeperch; Growth; Intestinal microflora; Gene expression; Intestinal barrier

期刊名称：AQUACULTURE REPORTS （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN： 2352-5134

年卷期： 2025 年 43 卷

页码：

收录情况： SCI

摘要： A 2 x 3 factorial (protein: 51 %, 54 %; lipid: 12 %, 15 %, 18 %) experiment was conducted to investigate the effects of feed protein and lipid levels on growth, intestinal health, and intestinal microflora of the pikeperch juvenile. During the 8-week experiment, the 2700 pikeperch (1.00 +/- 0.15 g) were chosen and randomly divided into six treatments with three replicates in each treatment. At the 51 % protein level, pikeperch juvenile exhibited optimal growth performance at the 18 % lipid level. The expression levels of il-1J3 and tnf-J3 in intestine were increased, meanwhile the expression levels of il10 and tgf-J3 were decreased with the increase of dietary lipid level. Intestinal barrier function was also affected by dietary lipid levels, the expression levels of occludin-a, occludin-b, and zo-2 increased with the increase of dietary lipid level. Additionally, the abundance of Leuconostoc, Pediococcus, and Lactococcus increased with increasing dietary lipid level. At the 54 % protein level, pikeperch juvenile achieved optimal growth performance at the 15 % lipid level. The expression of il-1J3 and tnf-J3 was lowest, meanwhile il10 and tgf-J3 expression was highest at the 15 % lipid level, significantly exceeding that of the 18 % lipid group. The expression of occludin-a decreased with increasing lipid levels, while occludin-b and zo-2 expression was highest at the 15 % lipid level. Intestinal microflora analysis indicated that at the 15 % lipid level, the abundance of Leuconostoc, Pediococcus, Lactococcus was greatest. When the protein level of the feed was 51 % and the lipid level was 18 %, the growth performance of juvenile pikeperch was the best, and there was no obvious tissue damage or inflammatory response. The structure of the intestinal microflora was also relatively stable, indicating that the optimal protein and lipid levels for juvenile pikeperch were 51 % and 18 %, respectively.

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