Selection for growth performance of tank-reared Pacific white shrimp, Litopenaeus vannamei

IOCAS-IR

	Selection for growth performance of tank-reared Pacific white shrimp, Litopenaeus vannamei
	An D(安迪); Liu XL(刘小林); Huang H(黄皓); Xiang JH(相建海)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2013-05-15
出版年	2013
卷号	v.31 期号:03 页码:66-73
文献类型	CNKI期刊论文
摘要	Seven growth-related traits were measured to assess the selection response and genetic parameters of the growth of Pacific white shrimp, Litopenaeus vannamei, which had been domesticated in tanks for more than four generations. Phenotypic and genetic parameters were evaluated and fitted to an animal model. Realized response was measured from the difference between the mean growth rates of selected and control families. Realized heritability was determined from the ratio of the selection responses and selection differentials. The animal model heritability estimate over generations was 0.44±0.09 for body weight (BW), and ranged from 0.21±0.08 to 0.37±0.06 for size traits. Genetic correlations of phenotypic traits were more variable (0.51-0.97), although correlations among various traits were high (>0.83). Across generations, BW and size traits increased, while selection response and heritability gradually decreased. Selection responses were 12.28%-23.35% for harvest weight and 3.58%-13.53% for size traits. Heritability estimates ranged from 0.34±0.09 to 0.48±0.15 for harvest weight and 0.17±0.01-0.38±0.11 for size traits. All phenotypic and genetic parameters differed between various treatments. To conclude, the results demonstrated a potential for mass selection of growth traits in L. vannamei. A breeding scheme could use this information to integrate the effectiveness constituent traits into an index to achieve genetic progress.
关键词	growth performance Pacific white shrimp quantitative genetics realized heritability response to selection
CNKI专辑号	A;D;
CNKI专辑名称	基础科学;农业科技;
CNKI专题号	D052;
CNKI专题名称	水产和渔业;
分类号	S968.22
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the collaborative project of National Ministry of Agricultural Science and Technology,China(No.2012GB2E200361) ; the National High Technology Research and Development Program of China(863 Program)(No.2006AA10A406) ; the Key Laboratory of Marine Biology,Institute of Oceanology,Chinese Academy of Sciences
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/190865
专题	中国科学院海洋研究所
作者单位	1.CollegeofAnimalScienceandTechnology,NorthwestA&FUniversity,ShaanxiKeyLaboratoryofMolecularBiologyforAgriculture 2.HainanGuangtaiOceanBreedingCompanyLimited 3.ExperimentalMarineBiologyLaboratory,InstituteofOceanology,ChineseAcademyofSciences
推荐引用方式 GB/T 7714	An D,Liu XL,Huang H,et al. Selection for growth performance of tank-reared Pacific white shrimp, Litopenaeus vannamei. 2013.