文献类型：期刊文献

英文题名：Effects of Replacing Soybean Meal with Sunflower Meal or Fermented Sunflower Meal on the Growth Performance, Intestinal Flora and Intestinal Health of Tilapia (Gift, Oreochromis Niloticus)

作者：Huang, Huajing[1,2]; Liu, Yu[1,2]; Zhou, Hang[1,2]; Lin, Xiangqin[1,2]; Wang, Xuehan[1,2]; Jiang, Wen[1,2]; Zhang, Lu[3]; Mi, Haifeng[3]; Deng, Junming[1,2]

机构：[1] College of Fisheries, Guangdong Ocean University, Zhanjiang, 524088, China; [2] Aquatic Animals Precision Nutrition and High-Efficiency Feed Engineering Research Centre of Guangdong Province, Guangdong Ocean University, Zhanjiang, 524088, China; [3] Guangdong Ocean University, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240021542)

语种：英文

外文关键词：Gene expression - Growth rate

外文摘要：A nine-week feeding trial was conducted to evaluate the effects of replacing soybean meal (SBM) with sunflower meal (SM) or fermented sunflower meal (FSM) on the growth performance, intestinal flora and intestinal health of tilapia (GIFT, Oreochromis niloticus) (initial weight 6.55 ± 0.01 g). Eleven isonitrogenous and isolipidic experimental diets were formulated by replacing 0%, 20%, 40%, 60%, 80% and 100% of dietary SBM with SM or FSM. The results showed that the replacement of more than 40% of SBM with SM decreased the weight gain (WG) and special growth rate (SGR) of tilapia, while complete replacement of SBM with FSM did not affect the growth performance of tilapia. Replacement of more than 20% of SBM with SM decreased decreased amylase, lipase, trypsin activity, fold height and muscular thickness. Replacement of more than 20% of SBM with FSM decreased trypsin activity but there were no significant differences in amylase, lipase activity, fold height and muscular thickness between the FSM replacement groups and the control group. Substitution of SBM with SM decreased the dry matter, nutrient (crude protein, crude lipids and crude ash) and total energy apparent digestibility, while FSM showed the opposite trend. Replacement of 20% of SBM with SM upregulated intestinal tight junction (zo-1, claudin, occludin) and anti-inflammatory (tgf-β1, tgf-β2, il-10) gene expression and down-regulated pro-inflammatory gene expression (tnf-α, il-1β, il-6, il-8). Replacement of more than 20% of SBM with FSM down-regulated intestinal tight junction (zo-1, claudin, occludin), pro-inflammatory (tnf-α, il-1β, il-8) gene expression, whereas substitution of less than 80% increased the expression of anti-inflammatory genes (tgf-β1). The 100% FSM group exhibited a decreased abundance of Fusobacteriota and an increased abundance of Actinobacteriota compared to the control and 100% SM groups. In summary, our data confirm that replacing more than 40% of SBM with SM induces gut inflammation, damages gut health, and decreases dietary nutrient utilization and growth performance. Conversely, FSM substitution promotes gut immunity and structure and improves dietary nutrient utilization and growth performance. FSM can completely replace SBM without detrimental effects on the growth performance and feed utilization of tilapia. ? 2024, The Authors. All rights reserved.