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

文献类型: 外文期刊

作者: Ren, Mingchun 1 ; Ji, Ke 2 ; Liang, Hualiang 2 ; Ge, Xianping 1 ; Mi, Haifeng 1 ;

作者机构: 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Germplasm Resource, Minist Agr, Wuxi 214081, Peoples R China

2.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Peoples R China

3.Tongwei Grp, Aquaculture Res Inst, Chengdu 610041, Peoples R China

关键词: Ide Leuciscus idus; Protein; Growth performance; Whole-body composition

期刊名称:ISRAELI JOURNAL OF AQUACULTURE-BAMIDGEH ( 影响因子:0.287; 五年影响因子:0.593 )

ISSN: 0792-156X

年卷期: 2017 年 69 卷

页码:

收录情况: SCI

摘要: A 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.

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