淡水轮虫土池培育技术研究及应用

Study and Application of the Culture Technology for Freshwater Rotifer in Earthen Ponds

淡水轮虫是淡水水产动物育苗的优质饵料之一.在总结传统的土池水花鱼苗培育技术的基础上,确立了土池培育淡水轮虫的技术,旨在建立一种高效低耗的淡水轮虫培育技术.结果表明,在水温22 ～ 25℃下利用豆浆对浮游植物和轮虫进行同步培育,投入豆浆后第6天轮虫密度可达高峰期,所培育的轮虫高峰期时密度可达40 ～50个/ml.将培育的轮虫运用于花鱼骨和黄尾密鲴的苗种培育,取得了较好的效果.因此,在土池中进行淡水轮虫培育是可行的.该研究可使传统的淡水鱼苗培育技术更具有科学性和确定性,同时也可为工厂化的水产动物育苗提供优质、适口的生物饵料.

Freshwater rotifer was one of the high quality diets for freshwater aquatic animal breeding.The culture technology for freshwater rotifer in earthen ponds was developed on the basis of traditional technology for fish fries culture in earthen ponds,which aimed to establish a kind of culture technology for freshwater rotifer with the characteristics of high efficiency and low consumption.The results indicated that when the water temperature was 22 ℃ to 25 ℃,the synchronized culture for phytoplankton and rotifer was conducted with soy bean milk,after spilling soy bean milk for six days,the density of rotifer could arrive at its peak,40-50 ind/ml.A good result was obtained by feeding fries of Hemibarbus maculatus Bleeker and Xenocypris davidi Bleeker with the cultured rotifer in this study.Therefore,the culture of freshwater rotifer in earthen ponds was feasible,this study could make the traditional freshwater fry culture technology more scientific and deterministic,meanwhile,could provide live food for industrial breeding for aquatic animals with the characteristic of high quality and palatability.