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Effect of dietary linolenic acid/linoleic acid ratio on growth performance, hepatic fatty acid profiles and intermediary metabolism of juvenile yellow catfish Pelteobagrus fulvidraco
Tan, Xiao-ying1; Luo, Zhi1; Xie, Ping1,2; Liu, Xiang-jiang1; Tan, XY, Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
2009-11-01
Source PublicationAQUACULTURE
ISSN0044-8486
Volume296Issue:1-2Pages:96-101
AbstractThe present study aimed to evaluate the effect of dietary linolenic acid (LNA)linoleic acid (LA) ratio on growth performance, hepatic fatty acid profile and intermediary metabolism of juvenile yellow catfish Pelteobagrus fulvidraco. Six isonitrogenous and isolipidic diets were formulated to contain incremental levels of LNA from 0 to 5% at the expense of corn oil (rich in LA), resulting in six dietary treatments with LNA to LA ratios ranging from 0.35 to 14.64. The experiment continued for 7 weeks. Best growth and feed intake were obtained in the fish fed the diets containing the LNA/LA ratios of 1.17 and 2.12 (P<0.05). In contrast, feed conversion ratio was the lowest for fish fed the diets containing the LNA/LA ratios of 1.17 and 2.12 (P<0.05). Dietary LNA to LA ratios significantly influenced viscerosomatic index and hepatosomatic index (P<0.05), but not condition factor (P>0.05). Body composition was also significantly influenced by dietary LNA to LA ratios (P<0.05). Generally, liver FA compositions reflected dietary FA profiles. Declining LA and increasing LNA contents in liver were observed with the increasing dietary LNA/LA ratios (P<0.05). Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) increased with the increasing LNA to LA ratios, suggesting that yellow catfish could elongate and desaturate C18 polyunsaturated fatty acids into highly unsaturated fatty acids. As a consequence, the n-6 fatty acids (FA) declined, and total n-3 FA and n-3/n-6 ratios increased with the dietary ratios of LNA/LA (P<0.05). Dietary LNA to LA ratios significantly influenced several enzymatic activities involved in liver intermediary metabolism (P<0.05), such as lipoprotein lipase, hepatic lipase, pyruvate kinase, succinate dehydrogenase, malic dehydrogenase and lactate dehydrogenase, suggesting that dietary LNA/LA ratios had significant effects on nutrient metabolism in the liver. To our knowledge this is the first demonstration of the effects of dietary LNA to LA ratios on the enzymatic activities of liver in fish, which provides information on diet quality and utilization, and can also be used as an indicator of the nutritional status of this fish. (C) 2009 Elsevier B.V. All rights reserved.; The present study aimed to evaluate the effect of dietary linolenic acid (LNA)linoleic acid (LA) ratio on growth performance, hepatic fatty acid profile and intermediary metabolism of juvenile yellow catfish Pelteobagrus fulvidraco. Six isonitrogenous and isolipidic diets were formulated to contain incremental levels of LNA from 0 to 5% at the expense of corn oil (rich in LA), resulting in six dietary treatments with LNA to LA ratios ranging from 0.35 to 14.64. The experiment continued for 7 weeks. Best growth and feed intake were obtained in the fish fed the diets containing the LNA/LA ratios of 1.17 and 2.12 (P<0.05). In contrast, feed conversion ratio was the lowest for fish fed the diets containing the LNA/LA ratios of 1.17 and 2.12 (P<0.05). Dietary LNA to LA ratios significantly influenced viscerosomatic index and hepatosomatic index (P<0.05), but not condition factor (P>0.05). Body composition was also significantly influenced by dietary LNA to LA ratios (P<0.05). Generally, liver FA compositions reflected dietary FA profiles. Declining LA and increasing LNA contents in liver were observed with the increasing dietary LNA/LA ratios (P<0.05). Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) increased with the increasing LNA to LA ratios, suggesting that yellow catfish could elongate and desaturate C18 polyunsaturated fatty acids into highly unsaturated fatty acids. As a consequence, the n-6 fatty acids (FA) declined, and total n-3 FA and n-3/n-6 ratios increased with the dietary ratios of LNA/LA (P<0.05). Dietary LNA to LA ratios significantly influenced several enzymatic activities involved in liver intermediary metabolism (P<0.05), such as lipoprotein lipase, hepatic lipase, pyruvate kinase, succinate dehydrogenase, malic dehydrogenase and lactate dehydrogenase, suggesting that dietary LNA/LA ratios had significant effects on nutrient metabolism in the liver. To our knowledge this is the first demonstration of the effects of dietary LNA to LA ratios on the enzymatic activities of liver in fish, which provides information on diet quality and utilization, and can also be used as an indicator of the nutritional status of this fish. (C) 2009 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordPelteobagrus Fulvidraco Linolenic Acid/linoleic Acid Ratios Essential Fatty Acids Growth Performance Hepatic Intermediary Metabolism
Department[Tan, Xiao-ying; Luo, Zhi; Xie, Ping; Liu, Xiang-jiang] Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China; [Xie, Ping] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
Subject AreaFisheries ; Marine & Freshwater Biology
DOI10.1016/j.aquaculture.2009.08.001
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationFoundation of Huazhong Agricultural University [52204-06086]; Ministry of Education, China [20070504058] ; Foundation of Huazhong Agricultural University [52204-06086]; Ministry of Education, China [20070504058] ; Foundation of Huazhong Agricultural University [52204-06086]; Ministry of Education, China [20070504058] ; Foundation of Huazhong Agricultural University [52204-06086]; Ministry of Education, China [20070504058]
Indexed BySCI
Language英语
WOS Research AreaFisheries ; Marine & Freshwater Biology
WOS SubjectFisheries ; Marine & Freshwater Biology
WOS IDWOS:000271345500014
WOS KeywordSALMON SALMO-SALAR ; LIPOGENIC ENZYME-ACTIVITIES ; PRAWN PENAEUS-MONODON ; FRESH-WATER FISH ; LIPOPROTEIN METABOLISM ; ONCORHYNCHUS-KISUTCH ; LIPID-COMPOSITION ; PYRUVATE-KINASE ; SPARUS-AURATA ; CHINESE PRAWN
Funding OrganizationFoundation of Huazhong Agricultural University [52204-06086]; Ministry of Education, China [20070504058] ; Foundation of Huazhong Agricultural University [52204-06086]; Ministry of Education, China [20070504058] ; Foundation of Huazhong Agricultural University [52204-06086]; Ministry of Education, China [20070504058] ; Foundation of Huazhong Agricultural University [52204-06086]; Ministry of Education, China [20070504058]
Citation statistics
Cited Times:56[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7524
Collection期刊论文
Corresponding AuthorTan, XY, Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
Affiliation1.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Tan, Xiao-ying,Luo, Zhi,Xie, Ping,et al. Effect of dietary linolenic acid/linoleic acid ratio on growth performance, hepatic fatty acid profiles and intermediary metabolism of juvenile yellow catfish Pelteobagrus fulvidraco[J]. AQUACULTURE,2009,296(1-2):96-101.
APA Tan, Xiao-ying,Luo, Zhi,Xie, Ping,Liu, Xiang-jiang,&Tan, XY, Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China.(2009).Effect of dietary linolenic acid/linoleic acid ratio on growth performance, hepatic fatty acid profiles and intermediary metabolism of juvenile yellow catfish Pelteobagrus fulvidraco.AQUACULTURE,296(1-2),96-101.
MLA Tan, Xiao-ying,et al."Effect of dietary linolenic acid/linoleic acid ratio on growth performance, hepatic fatty acid profiles and intermediary metabolism of juvenile yellow catfish Pelteobagrus fulvidraco".AQUACULTURE 296.1-2(2009):96-101.
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