Effects of phosphorus on growth, biochemical parameters and intestinal microbiota of the juvenile hybrid of Acipenser baerii 9xAcipenser schrenckii ♂
文献类型： 外文期刊
作者： Chu, Zhipeng 1 ; Jin, Jiali 1 ; Li, Luoxin 1 ; Zhou, Wenbo 2 ; Hong, Yucong 3 ; Liu, Wei 1 ; Ruan, Rui 1 ; Li, Yan 5 ; Sun, Jianwei 6 ; Chai, Yi 2 ; Li, Chuangju 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China
2.Yangtze Univ, Coll Anim Sci, Jingzhou 434025, Peoples R China
3.Guangdong Prov Key Lab Aquat Larvae Feed, Jieyang 522000, Peoples R China
4.Minist Educ, Key Lab Anim Genet Breeding & Reprod Plateau Mount, Guiyang 550025, Peoples R China
5.Hubei Jingruitianheng Biotechnol Co Ltd, Yichang 443000, Peoples R China
6.Weihai Aquat Sch, Weihai 264300, Peoples R China
关键词： Hybrid sturgeon; Phosphorus; Growth; Serum biochemical; Intestinal microbiota
期刊名称：AQUACULTURE REPORTS （ 影响因子：3.2； 五年影响因子：3.5 ）
ISSN： 2352-5134
年卷期： 2024 年 36 卷
页码：
收录情况： SCI
摘要： Phosphorus (P) plays a vital role in fish life and its application in aquatic feed deserves thoroughly study. To evaluate the effects of dietary P on growth performance, serum biochemical parameters and intestinal microbiota of the juvenile hybrid of A. baerii9 x A. schrenckii male, five diets containing 3.7, 6.5, 9.6, 12.2 and 14.8 g/kg of available phosphorus (AP) were assigned to feed fish at initial weight of 10.06 +/- 0.39 g for 8 weeks. The results showed that weight gain (WG) of juvenile hybrid sturgeon was improved significantly with dietary AP level up to 9.6 g/kg. Feed efficiency (FE) and P digestibility of fish were significantly enhanced by P supplementation, but were dropped when dietary AP level further increased to 12.2 and 14.8 g/kg. Alkaline phosphatase (ALP) activity increased firstly and then slightly decreased at a stable level in the high dietary AP groups (12.2 and 14.8 g/kg). With dietary AP level increasing, significantly decrease of the content of triglyceride (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C) in serum were observed. Serum antioxidant indicators including superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px) and total antioxidant capacity (T-AOC) exhibited the improved activity by addition P in diet. Intestinal microbiota analysis indicated that the supplementation of P in diet increased the richness and diversity of bacteria communities. Cyanobacteria was the dominant phyla in the intestine of hybrid sturgeon, and was significantly increased in P addition group. Compared with the basal diet group, abundant genera in dietary P supplementation group exhibited a higher diversity and were composed of Clostridium, Cetobacterium, Bacteroides, Empedobacter, Ruminococcus, Faecalibacterium, Rhodococcus and Candidatus Arthromitus. In conclusion, appropriate dietary P supplementation could positively affect the growth, biological processes and intestinal microbial communities of fish, and a level of 8.5 g/kg of AP in diet is suggested for juvenile hybrid sturgeon.
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