动物营养学报 >

2017 , Vol. 29 >Issue 7: 2575 - 2586

DOI: https://doi.org/10.3969/j.issn.1006-267x.2017.07.043

研究简报 Short communications

饲料精氨酸与赖氨酸配比对全雄黄颡鱼生长性能、体组成、血清生化指标及氨基酸沉积率的影响

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  • 扬州大学动物科学与技术学院, 扬州 225001
沈勇(1995—),男,江苏淮安人,硕士研究生,研究方向为水产动物营养。E-mail:1597725292@qq.com

收稿日期: 2016-12-22

  网络出版日期: 2017-07-05

基金资助

“十二五”江苏省高等学校重点专业建设项目（33102003701）；扬州大学教学改革研究项目资助（YZUJX2015-34B）；江苏高校优势学科建设工程资助项目（PAPD）

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Effects of Dietary Arginine/Lysine on Growth Performance, Body Composition, Serum Biochemical Indices and Amino Acid Deposition Rate of All-Male Yellow Catfish

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  • College of Animal Science and Technology, Yangzhou University, Yangzhou 225001, China

Received date: 2016-12-22

  Online published: 2017-07-05

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摘要

本试验旨在探讨饲料精氨酸（Arg）与赖氨酸（Lys）配比（Arg/Lys）对全雄黄颡鱼生长性能、体组成、血清生化指标及氨基酸沉积率的影响。选取平均体重为（2.34±0.05） g的全雄黄颡鱼幼鱼960尾，随机分成8组（每组4个重复，每个重复30尾），分别饲喂Arg/Lys为2.19/2.61（%/%，下同；Ⅰ组，作为对照组）、1.74/2.08（Ⅱ组）、1.75/3.02（Ⅲ组）、2.63/2.08（Ⅳ组）、2.64/3.12（Ⅴ组）、3.07/2.61（Ⅵ组）、2.19/3.65（Ⅶ组）、3.08/3.65（Ⅷ组）的等氮等脂饲料，进行为期10周的生长试验。结果表明：1）全雄黄颡鱼的末重、增重、增重率、特定生长率均在Arg/Lys为3.07/2.61（Ⅵ组）时达到最大，除增重率与Ⅴ组差异不显著（P>0.05）以及末重、增重、增重率、特定生长率与Ⅳ、Ⅴ组差异不显著（P>0.05）外，均显著高于其他各组（P<0.05）；对于蛋白质效率、成活率，各组间差异不显著（P>0.05）；饲料系数以Ⅱ组最高，且显著高于其他组（P<0.05）。2）全鱼水分、粗脂肪、粗灰分含量各组间均无显著差异（P>0.05），但全鱼粗蛋白质含量则表现为Ⅵ组最高，且显著高于Ⅱ、Ⅲ组（P<0.05）；肌肉粗蛋白质、粗脂肪含量各组间均无显著差异（P>0.05），但肌肉水分含量以Ⅶ组最高，且显著高于Ⅰ、Ⅱ组（P<0.05）。3）全雄黄颡鱼Lys、缬氨酸（Val）沉积率与饲料Arg/Lys比值呈线性关系，并随着Arg/Lys比值的增大而增加；而全雄黄颡鱼Arg、苏氨酸（Thr）、蛋氨酸（Met）、苯丙氨酸（Phe）、亮氨酸（Leu）、组氨酸（His）、异亮氨酸（Ile）沉积率与饲料Arg/Lys比值呈二次回归关系，当Arg/Lys比值分别为0.98、1.16、1.17、1.02、1.28、1.11、1.24时，Arg、Thr、Met、Phe、Leu、His、Ile沉积率达到最大值。4）饲料Arg/Lys对血清中各生化指标（谷丙转氨酶、谷草转氨酶活性及总蛋白、白蛋白、球蛋白、葡萄糖、尿素氮、总胆固醇、甘油三酯含量与白球比）均无显著影响（P>0.05）。由此得出，饲料Arg/Lys对全雄黄颡鱼的生长性能、体组成及氨基酸沉积率均有影响，本试验中，全雄黄颡鱼饲料中适宜的Arg/Lys为3.07/2.61。

关键词： 精氨酸; 赖氨酸; 全雄黄颡鱼; 生长性能; 体组成; 氨基酸沉积率; 血清生化指标

本文引用格式

沈勇, 邱其浚, 孙龙生, 陈耀宇, 金磊 . 饲料精氨酸与赖氨酸配比对全雄黄颡鱼生长性能、体组成、血清生化指标及氨基酸沉积率的影响[J]. 动物营养学报, 2017 , 29(7) : 2575 -2586 . DOI: 10.3969/j.issn.1006-267x.2017.07.043

Abstract

This experiment was carried out to investigate the effects of dietary arginine (Arg)/lysine (Lys) on growth performance, body composition, serum biochemical indices and amino acid deposition rate in body tissues of all-male yellow catfish. All-male yellow catfish with the initial body weight of (2.34±0.05) g were randomly divided into 8 groups with 4 replicates per group and 30 fish per replicate. The fish in the 8 groups were fed 8 isonitrogenous and isolipidic diets, and the dietary Arg/Lys were designed as 2.19/2.61 (%/%, the same as below; group Ⅰ, as control group), 1.74/2.08 (group Ⅱ), 1.75/3.02 (group Ⅲ), 2.63/2.08 (group Ⅳ), 2.64/3.12 (group Ⅴ), 3.07/2.61 (group Ⅵ), 2.19/3.65 (group Ⅶ) and 3.08/3.65 (group Ⅷ), respectively. Growth trial lasted for 10 weeks. The results showed as follows: 1) when dietary Arg/Lys was 3.07/2.61, the final body weight (FBW), gain weight (GW), weight gain rate (WGR) and specific growth rate (SGR) had the highest values, and those in group Ⅵ were significantly higher than those in other groups (P<0.05), except WGR in group Ⅴ and FBW, GW, WGR and SGR in groups Ⅳ and Ⅴ (P>0.05). No significant differences were recorded both in survival rate (SR) and protein efficiency ratio (PER) among groups (P>0.05). The feed conversion rate (FCR) in group Ⅱ was the highest, and it significantly higher than that in other groups (P<0.05). 2) There were no significant differences observed in the contents of moisture, ether extract (EE) and ash in whole fish among groups (P>0.05), but the whole fish crude protein (CP) content reached the peak in group Ⅵ, which was significantly higher than that in groups Ⅱ and Ⅲ (P<0.05). There were no significant differences observed in the contents of EE and CP in muscle among groups (P>0.05), but the top value of moisture content in muscle was shown in group Ⅶ, which was significantly higher than that in groups Ⅰ and Ⅱ (P<0.05). 3) The Lys and valine (Val) deposition rates of all-male yellow catfish were linear with the dietary Arg/Lys ratio, which increased with the dietary Arg/Lys ratio increasing. The Arg, threonine (Thr), methionine (Met), phenylalanine (Phe), leucine (Leu), histidine (His) and isoleucine (Ile) deposition rates of all-male yellow catfish showed a quadratic regression relationship with the dietary Arg/Lys ratio. When the deposition rates of Arg, Thr, Met, Phe, Leu, His and Ile reached the maximum, the dietary Arg/Lys ratios were 0.98, 1.16, 1.17, 1.02, 1.28, 1.11 and 1.24, respectively. 4) No significant differences were observed in the serum biochemical indices (the activities of alanine aminotransferase and aspartate aminotransferase, the contents of total protein, albumin, globulin, glucose, urea nitrogen, cholesterol and triglyceride, and albumin/globulin) among groups (P>0.05). In conclusion, dietary Arg/Lys may take effects on growth performance, body composition and amino acid deposition rate of all-male yellow catfish. In this trial, the recommended dietary Arg/Lys for all-male yellow catfish is 3.07/2.61.

Key words： Arg; Lys; all-male yellow catfish; growth performance; body composition; serum biochemical indices; amino acid deposition rate

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