摘要
为探讨添加生物饵料卤虫无节幼体对黑神仙鱼稚鱼的养殖效果,开展了为期26 d的养殖实验。以人工配合颗粒饲料组投喂为对照组(A),人工配合颗粒饲料补充卤虫无节幼体投喂为实验组(MA)开展生长研究。结果表明:补充投喂卤虫无节幼体可显著提高黑神仙鱼稚鱼存活率,并一定程度提高特定生长率。MA组和A组存活率分别为(95.53±3.21)%、(82.50±4.32)%;特定生长率分别为(8.50±1.47)%·d^(−1)、(6.92±1.06)%·d^(−1)。补充投喂卤虫无节幼体一定程度上可促进其质量性状、形态性状的生长,提高体长增长量、肥满度和鱼群体长均质度、体质量均质度。养殖结束后黑神仙鱼稚鱼体长、体高、腹鳍长、背鳍高和尾鳍长分别为25、12、22、10和5 mm;体长增长量、肥满度分别为12 mm和3%;鱼群体长均质度、体质量均质度分别为92%和90%。使用卤虫无节幼体配合人工配合颗粒饲料进行补充投喂对黑神仙鱼稚鱼中间培育阶段的生长具有一定积极作用,可作为优化黑神仙鱼稚鱼养殖技术及管理措施的方法之一。
Nauplii of Artemia sp.are a common and important live larval feed used in fish seed production.To make clear the effect of Artemia sp.nauplii as supplementary feed on the rearing of the juveniles of freshwater black angelfish(Pterophyllum scalare),the angelfish juveniles are selected and reared for 26 days in an experiment with two treatments to observe their growth performance.The juveniles were fed with commercial pellet feed without Artemia sp.nauplii as a control group(M),and with commercial pellet feed supplemented with Artemia sp.nauplii as the other treatment group(MA).The results showed that the other treatment group improved the survival rate of the angelfish juveniles significantly due to supplementary feeding with Artemia sp.nauplii,and increased the specific growth rate,as compared with the control group.The survival rates were(95.53±3.21)%and(82.50±4.32)%for the other treatment group and the control group,respectively,and their specific growth rates were(8.50±1.47)%·d and(6.92±1.06)%·d,respectively.Supplementary feeding with the nauplii of Artemia sp.is conducive to the growth of the qualitative and morphological traits of the angelfish juveniles,and increased the body length,condition factor,and uniformity of body length and weight of the angelfish juveniles in fish population.At the end of the experiment the juveniles were 25 mm in body length,12 mm in height,22 in pelvic fin length,10 mm in dorsal fin height and 5 mm in caudal fin length,and their body length and the condition factor increased by 12 mm and 3%,respectively.The uniformity of body length and the uniformity of body weight in fish population were 92%and 90%,respectively.The finding is helpful to optimize the management and improve rearing techniques for freshwater black angelfish juveniles.
作者
李曦
吝思琪
李娇妮
VASQUEZ Herbert Ely
王爱民
郑兴
顾志峰
LI Xi;LIN Siqi;LI Jiaoni;VASQUEZ Herbert Ely;WANG Aimin;ZHENG Xing;GU Zhifeng(Ocean College,Hainan University,Haikou,Hainan 570228;State Key Laboratory of Marine Resource Utilization in South China Sea,Hainan University,Haikou,Hainan 570228,China)
出处
《热带生物学报》
2022年第5期423-428,共6页
Journal of Tropical Biology
基金
海南省自然科学青年基金(320QN207)
国家重点研发计划项目(2018YFD0900704)。
关键词
黑神仙鱼
稚鱼
卤虫无节幼体
补充投喂
存活
生长
鱼群均质度
black angelfish
juvenile
Artemia sp.nauplii
supplementary feeding
survival
growth
uniformity in fish population
