摘要
通过大面积养殖发现,F2代的成活率和适应力均好于F1代,F2代的成活率为67.2%,F1代成活率只有17.7%。造成F1代成活率低的主要原因是其适应力较差造成发病死亡。F2代的成活率、饲料系数、养殖产量均高于F1代,但生长速度不如F1代。
After large-scale culture, we found that the survival rate and adaptability of F2 generation was better than F,. The survival rate of F2 was 64.3% . The survival rate of F, was only 17.7% because the worse adaptability caused disease and death. As for comprehensive evaluation, the output, feed conversion ratio and survival rate of F2 generation was superior to F1 , but the growth was lower than F1.
出处
《水产科学》
CAS
北大核心
2007年第1期39-42,共4页
Fisheries Science
基金
国家863计划项目(2002AA603032)
关键词
SPF凡纳滨对虾
F1代
F2代
养殖性状
成活率
适应力
SPF Litopenaeus vannamei
F1, generation
F2 generation
culture trait
survival rate
adaptability