不同投饵率对稻田养殖扣蟹生长性能的影响  

The Effect of Different Feeding Levels on the Growth of Crab in Rice Field Farming

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作  者:封岩 闫有利 肖祖国 吴丽娜 乔辉 李敬伟 FENG Yan;YAN Youli;XIAO Zuguo;WU Lina;QIAO Hui;LI Jingwei*(Liaoning Institute of Freshwater Aquatic Science Key Laboratory of Aquatic Animal Disease Prevention and Control,Liaoyang,Liaoning 111000,China)

机构地区:[1]辽宁省淡水水产科学研究院,辽宁省水生动物病害防治重点实验室,辽宁辽阳111000

出  处:《水产养殖》2024年第5期1-4,14,共5页Journal of Aquaculture

基  金:淡水渔业新品种选育及高效生产技术(2021JH1/10400040);辽宁省农业科学院科技创新研究专项资金资助(2022DD279148)。

摘  要:于2022年6—9月,开展了不同投饵率对稻田养殖扣蟹生长性能的影响试验。设置A、B、C、D和E 5个试验组,对应每组日投饵率分别为:6%、5%、4%、3%和2%。结果表明,经过120 d的养殖,A组的体质量达到了6.36 g,随着投饵率的减小,体质量也逐步下降,并在投饵率最低的E组降至最低(4.02 g),与A组相比,降幅达36.8%,差异显著(P<0.05);A组回捕率为25.89%,显著高于D、E组,与B、C组差异不显著(P>0.05);且饲料系数也最高,并显著高于C、D、E组,饲料的有效利用率最低;性成熟率最高(2.89%),显著高于其他4组,且为B组的2.1倍,E组的24倍。当日投饵率<3%后,扣蟹的性成熟率受投饵率的影响不显著。An experiment on the effect of different feeding rates on the growth of larval crabs was carried out in June 2022.Five test groups A,B,C,D and E were set up,and the corresponding daily feeding rates of each group were 6%,5%,4%,3% and 2%,respectively.The results showed that after 120 days of breeding,the body weight of group A reached 6.36 g.With the decrease of feeding rate,the body weight also decreased gradually and reached the lowest(4.02 g) in group E,and compared with group A,the decrease was 36.8%,and the difference was significant(P<0.05).The recapture rate of group A was 25.89%,which was significantly higher than that of groups D and E,and was not significantly different from groups B and C(P>0.05).The feed coefficient was also the highest,which was significantly higher than that of groups C,D and E,and the effective utilization rate of feed was the lowest,and the sexual maturity rate was the highest(2.89%),which was significantly higher than that of the other four groups,and was 2.1 times that of group B and 24 times that of group E.The sexual maturity rate of larval crabs was not significantly affected by the baiting rate when the daily feeding rate was <3%.

关 键 词:稻田 扣蟹 投饵率 生长性能 

分 类 号:S963[农业科学—水产养殖]

 

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