摘要
为提高大鲵养殖脱鳃期的成活率，采用室内饲养池微流水人工养殖方法，研究了不同水温水质及饲养密度对大鲵脱鳃期成活率的影响。结果表明：在12～22℃水温范围内，大鲵脱鳃期的养殖成活率随水温的升高呈先上升后下降的趋势，18℃水温条件下大鲵脱鳃期养殖成活率最高，达92．5％，分别较12℃、14℃、16℃、20℃和22℃的水温条件下提高15％、10％、5．0％、2．5％和10％；饲养密度为20尾/m2时大鲵脱鳃期养殖成活率最高，达90％，分别较30尾/m2、40尾/m2和50尾/m2提高1．7％、7．5％和12％。山泉水和地表水养殖条件下大鲵脱鳃期养殖成活率差异不大，分别为88％和84％。
In order to increase survival rate of giant salamander during the period of caducibranchiate, j uvenile giant salamander was cultured in the box, with trickle water. Effect of different water temperature,culturing density,water quality on survival rate was studied.The results showed that at 1 2~22℃ water temperature range,survival rate of giant salamander during the period of caducibranchiate with the water temperature increased first and then decreased,it is the highest,92.5%,at 18 ℃,increased by 15%,10%,5.0%,2.5% and 10%,respectively,compared to 12℃,14℃,16℃,20℃ and 22℃.It is the highest,90% at culturing density of 20 fish/m2 ,increased by 1.7%,7.5% and 12%,respectively, compared with 30 fish/m2 ,40 fish/m2 and 50 fish/m2 .It is insignificantly cultured with mountain spring water and surface water,88% and 84%,respectively.
出处
《贵州农业科学》
CAS
北大核心
2014年第1期167-169,共3页
Guizhou Agricultural Sciences
基金
贵州省农业科技攻关"喀斯特山区大鲵模拟生境繁育配套技术研究"项目[黔科合NY字(2010)3053]
贵州省教育厅自然科学研究项目"大鲵模拟生境繁殖工程技术研究"[黔教科(2011)035]
"提高大鲵脱鳃期养殖成活率的配套技术研究"[黔教合ky字(2012)048]
关键词
大鲵
脱鳃期
水温
水质
饲养密度
成活率
giant salamander
period of caducibranchiate
water temperature
water quality
culturing density
survival rate
