池塘养殖环境下滇池金线鲃仔稚鱼的食性转化与生长  

Feeding Changes and Growth Performance of Sinocyclocheilus grahami (Pisces, Barbinae) Larvae and Juveniles in Farm Environment

作　　者：潘晓赋[1] 杨君兴[1] 李再云[1] 陈小勇[1] 

机构地区：[1]中国科学院昆明动物研究所,云南昆明650223

出　　处：《Zoological Research》2009年第4期433-437,共5页动物学研究（英文）

基　　金：国家重点基础研究发展计划(2007CB411600);全球环境基金会/世界银行项目(GEF-MSPgrantNo.TF051795);云南省发展和改革委员会项目;中国科学院西部之光项目(292006312D11033);云南省科技厅社会发展科技计划(2008CA001)

摘　　要：2008年3月-2009年3月，把35000尾滇池金线鲃（Sinocyclocheilus grahami）仔稚鱼分别饲养于3个池塘进行对比饲养研究。密度分别是：P1为208尾／m^3；P2为167尾／m^3；P3为41尾／m^3。饲养期间采用相同的管理措施。每天数据收集采用：在仔鱼孵化后的5～16d的每天8：00和18：00从每个育苗池中捞取5～8尾仔鱼进行测量分析。仔鱼开口30d后，每月从培育池各捞取15尾，测量全长和体重。研究发现，滇池金线囟巴仔鱼的开口时间为孵化后的5d，混合营养期3～5d，这与初孵的滇池金线囟巴仔鱼的全长和卵黄囊较大有关。在容易造成仔鱼大量死亡的混合营养期，通过采用浆状物一轮虫一人工混合饲料的方式，大幅度提高了滇池金线鲍仔稚鱼的存活率，孵化一年后的滇池金线自巴稚鱼存活率可达82．7％。经过一周年的饲养，滇池金线鳃稚鱼的体重由（0．027±0．01）g（0．003～1．22）增长到（8．83±0．54）g（3．7～16．7），月均增重为0．73g；全长由（15．8±0．30）mm（11．5～20．0）增长到（91．6±1．67）mm（75．0～16．0），全长月均增长6．32mm。滇池金线自巴稚鱼全年全长的增长呈线性相关，y=9．82±7．05month（R^2=0．9891）；全年体重的增长呈指数关系，y=0．0158month^2.54（R^2=0．9939）。From March 2008 to March 2009, comparative observations of feeding and growth were undertaken on 35,000 larvae cultivated in 3 pools, with respective densities of P1208 larvae/mS： P2 167 larvae/m^3; P3 41 larvae/m^3. Identical daily management processes were applied to the 3 pools. Data was collected on 5-8 larvae everyday at 08：00 and 18：00 within 15 days of hatching. 30 days from first dieting, the total length and body weight were measured on 15 juveniles collected from each pool. The first dieting of S. grahami larvae occurred in the 5th day after hatching, with a mixed nutrition phase of 3-5 days. The larvae within mixed nutrition conditions were vulnerable to death. In order to promote the survival in mixed nutrition, the larvae and juveniles were raised with jelly-rotifers-compound feed. The mean survival rate of juveniles S. grahami was 82.7%. After one year of cultivation, body weight increased from （0.027±0.01 ） g （ 0.003 - 1.22 ） to （ 8.83±0.54 ） ｜g （ 3.7 - 16.7 ）, net growth being 0.73 g per month. Total length increased from 15.8±0.30 mm （11.5-20.0） to 91.6±1.67mm （ 75.0 - 116.0）, net growth being 6.32mm per month. Linear growth in total length can be described by the equation： y=9.82＋7.05month （R^2=0.9891） . Index growth in body weight can be described by equation：y=0.0158month^2.54 （R^2=0.9939） .

关 键 词：滇池金线鲃 食性转换 生长 仔稚鱼 

分 类 号：S917.4[农业科学—水产科学]