摘要
根据催产激素注射后前期血清类固醇激素的水平变化,筛选了尼罗罗非鱼(Oreochromis niloticus)最佳催产激素组合。为了进一步验证该催产激素组合的生产效果,在尼罗罗非鱼繁殖生产期间进行人工催产试验,观察催产后144 h内实际含卵雌鱼比例与催产效应时间,并从卵子形态变化方面观察催产效应。结果显示:水温21~29℃时,催产试验组平均获产率为57.5%,对照组平均获产率为27.5%,试验组的平均获产率显著高于对照组(P〈0.05);试验组含卵时间集中在72 h内,对照组含卵时间比较分散;催产后72 h,试验组50%雌鱼卵子发育达到成熟期,对照组仅30%。试验结果为尼罗罗非鱼全人工繁殖生产提供了参考依据。
In order to verify the practical effect on artificial propagation of Oreochromis niloticus by hormone combination injection,the spawning rate and oxytocin effect time were investigated within 144 h after hormones injection in breeding season.Meantime,morphology of the eggs squeezed from the injected females was observed.Results showed,under water temperature of 21 ~ 29℃,the spawning rate was 57.5% in the experimental group,and mostly happened within 72 h after injection,while the spawning rate was 27.5% in the control with a irregular spawning time.At 72 h after injection of hormones,50% female in the experimental group reached maturity,in comparison with 30% in control group.These results showed that hormones combination injection could effectively improve the spawning rate,which provided some base for artificial propagation of Nile tilapia.
出处
《渔业研究》
2016年第1期36-40,共5页
Journal of Fisheries Research
基金
国家现代农业产业技术体系专项资金(CARS-49)
水产动物遗传育种中心上海市协同创新中心(ZF1206)
关键词
尼罗罗非鱼
人工催产
催产激素
获产率
Oreochromis niloticus
artificial propagation
oxytocin
spawning rate