Dietary Protein Requirement of Juvenile Ide, Leuciscus idus in Relation to Growth Performance, Whole-body Composition and Plasma Parameters

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dc.contributor.authorRen, Mingchun
dc.contributor.authorJi, Ke
dc.contributor.authorLiang, Hualiang
dc.contributor.authorGe, Xianping
dc.contributor.authorMi, Haifeng
dc.date.accessioned2017-12-28T02:33:37Z
dc.date.available2017-12-28T02:33:37Z
dc.date.issued2017
dc.description.abstractA 60-day feeding trial was conducted to determine the dietary protein requirements of juvenile ide, Leuciscus idus. Six iso-energetic experimental diets were formulated to contain graded protein levels ranging from 26.5% to 50.9% of dry diet. At the end of feeding trial, final weight (FW), weight gain (WG), and specific growth rate (SGR) increased significantly with increasing dietary protein levels up to 36.4%, and thereafter decreased with further increase of dietary protein levels (P<0.05). Feed conversion ratio (FCR) showed a converse trend (P<0.05). Hepatosomatic index and viscerosomatic index were negatively related to dietary protein levels (P<0.05). Increase of dietary protein levels significantly improved whole-body protein content and decreased lipid content (P<0.05). White blood cell counts, red blood cell, hemoglobin, and hematocrit, were independent of dietary protein levels (P>0.05). Plasma protein content was not significantly affected by dietary protein levels (P>0.05), while plasma triglyceride and glucose concentrations were decreased significantly with increasing dietary protein levels (P<0.05). The highest aspartic transaminase activity was observed in fish fed diet 26.5% protein, and the lowest value was observed in 36.4% protein group (P<0.05). Based on SGR and FCR, the dietary protein requirement of juvenile ide was determined to be 36.9%-37.7% of dry diet. Dietary methionine and lysine levels for optimal growth was calculated to be 0.83% and 2.25% of dry diet, respectively.
dc.format.extent9 pages
dc.identifier.issn0792-156X
dc.identifier.urihttp://hdl.handle.net/10524/57047
dc.subjectIde Leuciscus idus
dc.subjectProtein
dc.subjectGrowth performance
dc.subjectWhole-body composition
dc.subject.lcshFish culture--Israel.
dc.subject.lcshFish culture
dc.titleDietary Protein Requirement of Juvenile Ide, Leuciscus idus in Relation to Growth Performance, Whole-body Composition and Plasma Parameters
dc.typeArticle
dc.type.dcmiText

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Volume 69, 2017