Effects of dietary protein levels on growth performance and liver transcriptome changes in juvenile top-mouth culter Erythroculter ilishaeformis

An eight-week growth experiment was conducted to investigate the growth performance and liver transcriptome response of juvenile top-mouth culter Erythroculter ilishaeformis fed with different dietary protein levels. Six isoenergetic diets supplemented with protein at a level of 25%, 30%, 35%, 40%,...

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Autores principales:	Xing Lu, Huijie Wei, Changgeng Yang, Qing Li, Pei Li, Jian Chen, Yanhong Sun, Hua Wen, Ming Jiang, Guiying Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Dietary protein Erythroculter ilishaeformis Growth RNA-seq Differentially expressed genes Aquaculture. Fisheries. Angling SH1-691
Acceso en línea:	https://doaj.org/article/7593373f7ce1478e932f004e4050aa3c
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spelling	oai:doaj.org-article:7593373f7ce1478e932f004e4050aa3c2021-12-04T04:35:17ZEffects of dietary protein levels on growth performance and liver transcriptome changes in juvenile top-mouth culter Erythroculter ilishaeformis2352-513410.1016/j.aqrep.2021.100964https://doaj.org/article/7593373f7ce1478e932f004e4050aa3c2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2352513421003811https://doaj.org/toc/2352-5134An eight-week growth experiment was conducted to investigate the growth performance and liver transcriptome response of juvenile top-mouth culter Erythroculter ilishaeformis fed with different dietary protein levels. Six isoenergetic diets supplemented with protein at a level of 25%, 30%, 35%, 40%, 45% and 50% were prepared. The fish (initial mean weight 6.27 ± 0.30 g, 35 fish per tank, n = 3) were fed the six test diets in a recirculating aquaculture system at 30 ± 2 °C. Our results showed that weight gain rate (WGR) increased from 161.88% to 247.20% with the increase of dietary protein level from 25% to 40%, and then kept nearly stabilized with further increases in dietary protein concentration. Feed conversion ratio (FCR) showed an opposite trend to WGR. Using WGR and FCR as the response criterion, the optimal protein requirement for maximum growth of this juvenile fish species was 41.14% and 43.75%, respectively. The liver transcriptome profiles using RNA-seq technology showed that a total of 189.13 million clean data was generated and 202,677 unigenes with 435,540 transcripts were assembled. Unigenes were then searched against four databases including Swiss-Prot, COG, KOG, and KEGG. Differentially expressed genes (DEGs) were considered as a threshold of the fold change (FC) ≥ 2 and a false discovery rate (FDR) ≤ 0.01 in a comparison. Trend analysis revealed that these DEGs were significantly clustered into five clusters. Several DEGs associated with growth (igf1 and ST), lipid metabolism (fasn and accα), glucose metabolism (pepck, pk, gk and g6pd), aspartate biosynthesis (AST), immune (MHC-II), were validated with qPCR analysis. Moreover, function analysis indicated that the DEGs were mainly involved in metabolism, immunity, antioxidation, and a variety of signal pathways. Taken together, our data provide a comprehensive understanding of the feed formulation and molecular mechanism underlying the effects of dietary protein on E. ilishaeformis.Xing LuHuijie WeiChanggeng YangQing LiPei LiJian ChenYanhong SunHua WenMing JiangGuiying WangElsevierarticleDietary proteinErythroculter ilishaeformisGrowthRNA-seqDifferentially expressed genesAquaculture. Fisheries. AnglingSH1-691ENAquaculture Reports, Vol 21, Iss , Pp 100964- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Dietary protein Erythroculter ilishaeformis Growth RNA-seq Differentially expressed genes Aquaculture. Fisheries. Angling SH1-691
spellingShingle	Dietary protein Erythroculter ilishaeformis Growth RNA-seq Differentially expressed genes Aquaculture. Fisheries. Angling SH1-691 Xing Lu Huijie Wei Changgeng Yang Qing Li Pei Li Jian Chen Yanhong Sun Hua Wen Ming Jiang Guiying Wang Effects of dietary protein levels on growth performance and liver transcriptome changes in juvenile top-mouth culter Erythroculter ilishaeformis
description	An eight-week growth experiment was conducted to investigate the growth performance and liver transcriptome response of juvenile top-mouth culter Erythroculter ilishaeformis fed with different dietary protein levels. Six isoenergetic diets supplemented with protein at a level of 25%, 30%, 35%, 40%, 45% and 50% were prepared. The fish (initial mean weight 6.27 ± 0.30 g, 35 fish per tank, n = 3) were fed the six test diets in a recirculating aquaculture system at 30 ± 2 °C. Our results showed that weight gain rate (WGR) increased from 161.88% to 247.20% with the increase of dietary protein level from 25% to 40%, and then kept nearly stabilized with further increases in dietary protein concentration. Feed conversion ratio (FCR) showed an opposite trend to WGR. Using WGR and FCR as the response criterion, the optimal protein requirement for maximum growth of this juvenile fish species was 41.14% and 43.75%, respectively. The liver transcriptome profiles using RNA-seq technology showed that a total of 189.13 million clean data was generated and 202,677 unigenes with 435,540 transcripts were assembled. Unigenes were then searched against four databases including Swiss-Prot, COG, KOG, and KEGG. Differentially expressed genes (DEGs) were considered as a threshold of the fold change (FC) ≥ 2 and a false discovery rate (FDR) ≤ 0.01 in a comparison. Trend analysis revealed that these DEGs were significantly clustered into five clusters. Several DEGs associated with growth (igf1 and ST), lipid metabolism (fasn and accα), glucose metabolism (pepck, pk, gk and g6pd), aspartate biosynthesis (AST), immune (MHC-II), were validated with qPCR analysis. Moreover, function analysis indicated that the DEGs were mainly involved in metabolism, immunity, antioxidation, and a variety of signal pathways. Taken together, our data provide a comprehensive understanding of the feed formulation and molecular mechanism underlying the effects of dietary protein on E. ilishaeformis.
format	article
author	Xing Lu Huijie Wei Changgeng Yang Qing Li Pei Li Jian Chen Yanhong Sun Hua Wen Ming Jiang Guiying Wang
author_facet	Xing Lu Huijie Wei Changgeng Yang Qing Li Pei Li Jian Chen Yanhong Sun Hua Wen Ming Jiang Guiying Wang
author_sort	Xing Lu
title	Effects of dietary protein levels on growth performance and liver transcriptome changes in juvenile top-mouth culter Erythroculter ilishaeformis
title_short	Effects of dietary protein levels on growth performance and liver transcriptome changes in juvenile top-mouth culter Erythroculter ilishaeformis
title_full	Effects of dietary protein levels on growth performance and liver transcriptome changes in juvenile top-mouth culter Erythroculter ilishaeformis
title_fullStr	Effects of dietary protein levels on growth performance and liver transcriptome changes in juvenile top-mouth culter Erythroculter ilishaeformis
title_full_unstemmed	Effects of dietary protein levels on growth performance and liver transcriptome changes in juvenile top-mouth culter Erythroculter ilishaeformis
title_sort	effects of dietary protein levels on growth performance and liver transcriptome changes in juvenile top-mouth culter erythroculter ilishaeformis
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/7593373f7ce1478e932f004e4050aa3c
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Effects of dietary protein levels on growth performance and liver transcriptome changes in juvenile top-mouth culter Erythroculter ilishaeformis

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