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首页> 中文期刊> 《水生生物学报》 >低磷饲料中添加α-酮戊二酸对松浦镜鲤生长性能、体成分和血清生化指标的影响

低磷饲料中添加α-酮戊二酸对松浦镜鲤生长性能、体成分和血清生化指标的影响

         
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摘要

To study the effects of α-ketoglutarate (AKG) supplementation in low-phosphorous diets on growth perfor-mance, body composition and serum biochemical indexes of Songpu mirror carp, triplicate groups of Songpu mirror carp (6.67±0.84) g were fed with practical diets containing available P (AP) 0.73% (normal P) and 0.47% (low-P) with graded levels of 0, 0.4%, 0.8%, 1.2%, 1.6% and 2.0% of AKG to satiation for 8 weeks, respectively. The results showed that the feed coefficient(FCR)of the low phosphorus group was significantly higher than that of the normal phosphorus group(P<0.05),but the weight gain rate(WGR),specific growth rate(SGR),protein efficiency(PER),VSI, and CF were similar between normal P and Low-P groups(P<0.05).Compared with low P group,FCR of 0.4% AKG group and the levels of phosphorus and albumin (ALB) in 1.6% AKG group in normal P group were significantly in-creased (P<0.05), respectively. Compared with normal P group, ALT activity of the 0.8% AKG and AST activity of the 1.6% AKG in the low P group were significantly increased, respectively (P<0.05). AKG had no effect on serum other indexes (P>0.05). Compared with the normal phosphorus group, the content of crude ash and the deposition rate of cal-cium and phosphorus in the low phosphorus group decreased significantly (P<0.05). Compared with the low phospho-rus group, the phosphorus deposition rate and bone calcium content of 0.4% AKG and bone phosphorus content of 0.8% AKG in normal P group increased significantly, respectively (P<0.05). Adding AKG in low phosphorus diet had no significant effect on other body composition indexes (P>0.05). Thus, the suitable supplementation of AKG in the low phosphorus diets can reduce the FCR and improve the content of calcium and phosphorus in bone of Songpu mir-ror carp.%试验旨在研究低磷饲料中添加α-酮戊二酸(α-ketoglutarate,AKG)对松浦镜鲤(Cyprinus carpio Songpu)生长性能、体成分和血清生化指标的影响.选取平均体重为(6.67±0.14) g的松浦镜鲤630尾, 随机分成7组, 每组3个重复.分别投喂有效磷0.73%的正常磷饲料和有效磷0.47%的低磷饲料, 在低磷饲料中分别添加0、0.4%、0.8%、1.2%、1.6%、2.0% (干物质含量)的AKG, 配制成等氮等能饲料, 试验期为8周.结果表明: 低磷组饲料系数(FCR)显著高于正常磷组(P<0.05),但增重率(WGR)、特定生长率(SGR)、蛋白质效率(PER)、脏体指数(VSI)及肥满度(CF)差异不显著(P>0.05);与低磷组比,0.4%AKG组FCR显著降低(P<0.05),1.6%AKG组血清磷、白蛋白含量(ALB)显著增加(P<0.05); 0.8%AKG组谷草转氨酶(AST)活性和1.20%AKG组谷丙转氨酶(ALT)活性显著高于正常磷组(P<0.05); 添加不同水平AKG对血清其他指标无显著影响(P>0.05).与正常磷组相比, 低磷组粗灰分含量、骨钙含量和钙磷沉积率显著降低(P<0.05); 与低磷组相比, 添加不同水平AKG磷沉积率显著增加(P<0.05), 0.4%AKG组, 骨钙含量显著增加(P<0.05), 0.8%AKG组, 骨磷含量显著增加(P<0.05);低磷饲料添加AKG对其他体成分指标无显著影响(P>0.05).由此得出, 低磷饲料中添加适量的AKG可以降低FCR, 提高松浦镜鲤脊椎骨钙磷含量.

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  • 来源
    《水生生物学报》 |2018年第3期|525-532|共8页
  • 作者

    艾凤; 王连生; 李晋南; 王常安; 赵志刚; 罗亮; 都雪; 徐奇友;

  • 作者单位

    上海海洋大学水产与生命学院, 上海 201306;

    中国水产科学研究院黑龙江水产研究所, 哈尔滨 150070;

    中国水产科学研究院黑龙江水产研究所, 哈尔滨 150070;

    中国水产科学研究院黑龙江水产研究所, 哈尔滨 150070;

    中国水产科学研究院黑龙江水产研究所, 哈尔滨 150070;

    中国水产科学研究院黑龙江水产研究所, 哈尔滨 150070;

    中国水产科学研究院黑龙江水产研究所, 哈尔滨 150070;

    中国水产科学研究院黑龙江水产研究所, 哈尔滨 150070;

    中国水产科学研究院黑龙江水产研究所, 哈尔滨 150070;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 配合饲料;
  • 关键词

    磷; AKG; 鲤; 生长性能; 血清生化指标; 体成分;

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