动物营养学报 >

2016 , Vol. 28 >Issue 9: 2969 - 2976

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.09.037

研究简报 Short communications

3种无机磷源在吉富罗非鱼上的应用效果比较

  • 白富瑾 ,
  • 罗莉 ,
  • 陈任孝 ,
  • 陈拥军 ,
  • 林肯 ,
  • 黄旺 ,
  • 马建伟
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  • 1. 西南大学动物科技学院, 淡水鱼类资源与生殖发育教育部重点实验室, 重庆 400716;
    2. 重庆市开县和谦镇畜牧兽医站, 重庆 405424

收稿日期: 2016-03-07

  网络出版日期: 2016-09-08

基金资助

国家自然科学基金（31101909）；中央高校基本科研业务费（SWU114039，XDJK2015C080）

收起

A Comparison of Application Effect among Three Kinds of Inorganic Phosphorus Sources on Genetic Improvement of Farmed Tilapia (Oreochromis niloticus)

  • BAI Fujin ,
  • LUO Li ,
  • CHEN Renxiao ,
  • CHEN Yongjun ,
  • LIN Ken ,
  • HUANG Wang ,
  • MA Jianwei
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  • 1. College of Animal Science and Technology of Southwest University, Key Laboratory of Freshwater Reproduction and Development, Ministry of Education, Chongqing 400716, China;
    2. Animal Husbandry and Veterinary Station of Heqian Town in Kai County of Chongqing, Chongqing 405424, China

Received date: 2016-03-07

  Online published: 2016-09-08

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摘要

本试验旨在比较3种无机磷源对吉富罗非鱼生长、体组成、营养物质表观消化率及血清生化指标的影响。以含总磷0.91%的基础饲料为对照（Dcontrol组），在此基础上分别添加2.0%的磷酸二氢钙（MCP，DMCP组）、2.3%的磷酸氢钙（DCP，DDCP组）和2.0%的磷酸一二钙（MDCP，DMDCP组），配制4种等氮（粗蛋白质32.5%）等能（粗脂肪6.5%）的试验饲料，饲喂初始均重为（29.40±0.15） g的吉富罗非鱼幼鱼56 d。每种饲料设置3个重复，每个重复放鱼25尾。结果表明：1）DMCP和DDCP组的末均重、增重率和特定生长率均显著高于Dcontrol和DMDCP组（P<0.05）；DMCP组的饲料系数显著低于Dcontrol和DMDCP组（P<0.05），但与DDCP组差异不显著（P>0.05）；Dcontrol组的脏体比显著高于3个试验组（P<0.05）。2）3个试验组全鱼和组织粗脂肪含量均显著低于Dcontrol组（P<0.05），而全鱼粗灰分和总磷含量则显著高于Dcontrol组（P<0.05）。3）DMCP和DDCP组的干物质、粗灰分和总磷表观消化率显著高于Dcontrol和DMDCP组（P<0.05），Dcontrol和DMDCP组之间差异不显著（P>0.05）。吉富罗非鱼对MCP、DCP、MDCP的利用率依次为91.88%、86.03%和54.17%。4）3种无机磷对血清谷丙转氨酶活性和丙二醛含量无显著影响（P>0.05），但显著影响血清碱性磷酸酶和超氧化物歧化酶活性（P<0.05），二者均以DMCP组最高，DMDCP组最低，DDCP组居中。由此可见，MCP和DCP可作为吉富罗非鱼（体重30～150 g）饲料的无机磷源，而MDCP不适宜。

关键词： 吉富罗非鱼; 磷源; 生长; 体组成; 表观消化率

本文引用格式

白富瑾 , 罗莉 , 陈任孝 , 陈拥军 , 林肯 , 黄旺 , 马建伟 . 3种无机磷源在吉富罗非鱼上的应用效果比较[J]. 动物营养学报, 2016 , 28(9) : 2969 -2976 . DOI: 10.3969/j.issn.1006-267x.2016.09.037

Abstract

This experiment was conducted to compare the effects of three kinds of inorganic phosphorus sources on growth, body composition, nutrient apparent digestibility and serum biochemical indices of genetic improvement of farmed tilapia (GIFT, Oreochromis niloticus). Four isonitrogenous (crude protein 35.5%) and isolipidic (crude lipid 6.5%) diets were formulated with no extra phosphorous inclusion (Dcontrol group, contained 0.91% of total phosphorus), 2.0% monocalcium phosphate (MCP, DMCP group), 2.3% dicalcium phosphate (DCP, DDCP group) and 2.0% mono-calcium and di-calcium phosphate (MDCP, DMDCP group), respectively. Each diet was fed to triplicate groups of 25 juvenile GIFT with initial body weight of (29.40±0.15) g for 56 d. The results showed as follows: 1) DMCP and DDCP groups obtained significantly higher final body weight, weight gain rate and specific growth rate compared with Dcontrol and DMDCP groups (P<0.05). Feed conversion rate of DMCP group was significantly lower than that of Dcontrol and DMDCP groups (P<0.05), but it was not significantly different from that of DDCP group (P<0.05). Viscerosomatic index of Dcontrol group was significantly higher than that of three experimental groups (P<0.05). 2) Crude lipid content of whole body and tissues of three experimental groups was significantly lower than that of Dcontrol group (P<0.05), whereas ash and total phosphorus contents of whole body were significantly higher than those of Dcontrol group (P<0.05). 3) The apparent digestibility of dry matter, ash and total phosphorus of DMCP and DDCP groups was significantly higher than that of Dcontrol and DMDCP groups (P<0.05), but no significant differences were observed between DMCP and DDCP groups (P>0.05). The utilization of MCP, DCP and MDCP of GIFT was 91.88%, 86.03% and 54.17%, respectively. 4) Three kinds of inorganic phosphorus sources did not change serum glutamic-pyruvic transaminase activity and malondialdehyde content of GIFT (P>0.05), but serum alkaline phosphatase and superoxide dismutase activities were significantly influenced (P<0.05), with the highest value in DMCP group, followed by DDCP group and the lowest in DMDCP group. In conclusion, MCP and DCP can be used as inorganic phosphorous sources in the diet of GIFT (body weight is 30 to 150 g), while the MDCP is unsuitable.

Key words： GIFT; phosphorus source; growth; body composition; apparent digestibility

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