吉富罗非鱼不同家系的生长性状差异  

Establishment of Families and Comparison of Their Growth of GIFT Strain Tilapia(Oreochromis niloticus)

作　　者：唐章生[1] 林勇[1] 黎筠[1] 杨慧赞[1] 陈忠[1] 甘西[1] 

机构地区：[1]广西水产研究所,广西南宁530021

出　　处：《广西师范大学学报（自然科学版）》2011年第3期74-79,共6页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家农业现代体系广西罗非鱼创新团队专项;广西自然科学基金资助项目(0832010Z);广西科技成果转化项目(1123013-1);广西科学研究与技术开发计划项目(10100007-1);广西区直属公益性科研院所专项资金项目(2060302CXIF-2010-03;2060302GXIF-2011-05);广西水产畜牧兽医局科研专项(桂渔牧财[2010]58号);现代农业产业技术体系(nycytx-48-2)

摘　　要：以吉富品系尼罗罗非鱼为亲本,采用巢式配对法进行同质随机配对,配对252个家系,繁育获得106个家系,成功率为42.06%;通过标准化培育,构建了86个吉富罗非鱼全同胞家系和10个半同胞家系。选取22个不同家系进行同步的生长比较研究,结果表明:40、90、120及150日龄不同家系间平均体长、平均体质量的差异显著(P<0.05);应用多重比较结果显示,各个家系在不同日龄的体长、体质量表型值不同,在不同时期生长速率存在较大差异,但G2、G4、G6、G12和G22家系生长速度相对保持稳定。对150日龄罗非鱼体质量的分析发现,生长最快的G6家系体质量为815.50 g,比群体均值高17.71%,群体的变异系数(18.08%)明显大于各家系均值(14.19%),且家系间存在较大差异,变异系数最小的家系是G6(为10.70%),最大的是G8家系(为18.42%)。252 families of GIFT strain tilapia were established using nested homogeneous random matching method and 106 P1 families were collected.The success rate of matching was 42.06%.By standardized rearing,86 full-sib families of GIFT strain tilapia were obtained ultimately,including 10 half-sib families.22 families were selected under the hatching time,and their growth was studied simultaneously.The results showed that very significant differences were found between the averages of body length and body weight in different families of the same age.Further multiple comparisons showed that the sequence of phenotypic values of body length and body weight existed inconsistency in different families of different age.The growth rate of each family was very different at different age,but the G2,G4,G6,G12 and G22 family remained relatively stable.The analysis for body weight of 150 d tilapia showed that the biggest family is G6,the mean of body weight is 815.50 g,the coefficient variation of tilapia population（18.08%） is much larger than the mean of the families,the family G6 had the least CV（10.70%）,and family G8 had the max CV（18.42%）.

关 键 词：吉富罗非鱼 家系 生长 

分 类 号：TP917.4[自动化与计算机技术]