流水养殖模式下不同投喂频率对杂交鲟幼鱼生长性能的影响  

Effects of different feeding frequencies on the growth performance of juvenile hybrid sturgeon under flow-through culture mode

作　　者：周章 饶瑞 阙有清 袁波 张安青 ZHOU Zhang;RAO Rui;QUE Youqing;YUAN Bo;ZHANG Anqing(Tongren City Fishery Technology Promotion Station,Tongren 554300,Guizhou China)

机构地区：[1]铜仁市渔业技术推广站,贵州铜仁554300

出　　处：《黑龙江水产》2024年第2期161-164,共4页Northern Chinese Fisheries

摘　　要：为了探究流水池养殖模式下不同的投喂频率对杂交鲟幼鱼生长性能的影响,以期对杂交鲟流水养殖提供参考。该试验选择体质健康的规格整齐的初始体重为(6±1.13)g的杂交鲟幼鱼480尾。随机分成4组,每组设3个重复,每个重复组40尾。以不同投喂频率进行试验,试验1组投喂频率为2次/d,试验2组投喂频率为3次/d,试验3组投喂频率为4次/d,试验4组投喂频率为5次/d。预试验为1周,试验期为10周。结果显示:试验2组、试验3组、试验4组的增长率、存活率、摄食率均高于试验1组,无差异显著性(P>0.05);试验3组、试验4组的增长率、特定生长率均显著高于试验1组和试验2组(P<0.05);试验3组、试验4组的饵料系数均显著低于试验1组(P<0.05)。研究结果表明,流水养殖模式下不同的投喂频率对杂交鲟幼鱼生长具有不同的影响,其中以4次/d的投喂频率比较适宜,可以在杂交鲟的养殖过程中推广应用。In order to investigate the effects of different feeding frequencies on the growth performance of juvenile hybrid sturgeon under the flow pond culture mode,with a view to providing reference for hybrid sturgeon flow pond culture.In this experiment,480 juvenile hybrid sturgeon with healthy body condition and neat specification with initial weight of(6±1.13)g were selected.They were randomly divided into four groups,each with three replicates and 40 fishes in each replicate group.The feeding frequency was 2 times/d for test group 1,3 times/d for test group 2,4 times/d for test group 3 and 5 times/d for test group 4.The pre-test was conducted for 1 week and the test period was 10 weeks.The results showed that the growth rate,survival rate and feeding rate of test group 2,test group 3 and test group 4 were higher than that of test group 1,with no significant difference(P>0.05);the growth rate and specific growth rate of test group 3 and test group 4 were significantly higher than that of test group 1 and test group 2(P<0.05);and the bait coefficient of test group 3 and test group 4 were significantly lower than that of test group 1(P<0.05).The results of this study showed that different feeding frequencies under the flow-through aquaculture mode had different effects on the growth of juvenile hybrid sturgeon,among which the feeding frequency of 4 times/d could improve the growth performance of juvenile hybrid sturgeon,which can be popularized and applied in the aquaculture process of hybrid sturgeon.

关 键 词：杂交鲟 投喂频率 生长性能 

分 类 号：S965.215[农业科学—水产养殖]