Effects of dietary compound acidifier (Biomin) on the growth, anti-oxidation, immunity, and intestinal health of juvenile channel catfish (Ictalurus punctatus)

作者：Junyu Yan, Kai Luo, Bo Wang, Jiaxin He, Can Li, Zhou Jiang, Wenhao Lai, Xin Zhou, Jingwei Ye, Mingzhu Pan, Yingbing Su, Weihua Gao, Kai Guo, Chengmin Zhao · 发表于：Aquaculture Reports · 年份：2024 · DOI：10.1016/j.aqrep.2024.102577 · 被引用次数：6 · 研究领域：Aquaculture Nutrition and Growth、Aquaculture disease management and microbiota、Physiological and biochemical adaptations

The current study was conducted to investigate the influences of dietary compound acidifier (CA, Formic acid (45 %), malic acid (0.3 %), Fumaric acid (0.6 %) and Succinic acid (0.6 %), Biomin Feed Additives (Shanghai) Ltd) on the growth, anti-oxidation, immunity, and intestinal health of channel catfish ( Ictalurus punctatus ). Six experimental diets (about 36 % crude protein and 5 % crude lipid) were prepared with graded levels of dietary CA (0 (control), 0.05 %, 0.10 %, 0.20 %, 0.40 %, and 0.80 %). A total of 648 fish with similar initial body weight (143.77 ± 0.73 g) were randomly placed into 18 tanks, with 36 fish in each tank. Fish were hand-fed to apparent satiation thrice daily for 72 days (water temperature was 25–27℃). The results showed that the WGR (weight giant rate) and SGR (specific growth rate) of channel catfish in the 0.10 % group were significantly increased compared with the control group ( P < 0.05). The broken line model revealed that 0.0863 % of dietary CA was recommended for optimal SGR. The SOD (superoxide dismutase) activity and MDA (malondialdehyde) content in the serum in the 0.10 % groups were remarkably increased and decreased compared with the control group, respectively ( P < 0.05). The ACP (acid phosphatase), LZM (lysozyme) activities and ALB (albumin) contents in the serum were significantly increased after supplementation of 0.10–0.40 %, 0.10–0.20 % and 0.40–0.80 % of dietary CA, respectively ( P < 0.05). The AKP (alkaline phosphatase) activi...