摘要
以大菱鲆（Scophthalmus maximus）幼鱼为材料,以充空气作对比,分析液态氧增氧对养殖动物生长的影响。设置充空气（6-9mg/L）、液态氧I（6-9mg/L）和液态氧II（15-20mg/L）3个处理,定期检测水环境因子及大菱鲆生长相关指标。溶解氧（DO）含量在6-9mg/L范围内,液态氧增氧系统大菱鲆的体重（37.35g〉34.86g）、存活率（100%〉99%）、肥满度（4.50〉4.33）及饵料转化率（FCE,14.3%〉13.3%）等均高于充空气系统;DO含量为15-20mg/L时,大菱鲆的体重（32.03g）、存活率（94%）、肥满度（4.25）及FCE（11.1%）等均低于两6-9mg/LDO组。说明较低DO含量（6-9mg/L）下,液态氧促进大菱鲆的生长、提高成活率和FCE。7个月的养殖试验发现,液态氧系统中大菱鲆体长（21.71cm〉19.16cm）、体重（500.20g〉305.92g）、成活率（98%〉87%）、肥满度（4.90〉4.35）和FCE（118%〉62%）均显著高于充空气系统。DO含量6-9mg/L范围内,利用液态氧养殖大菱鲆可以加快生长、提高成活率和FCE。
Efficiency of pure oxygen in turbot （Scophthalmus maximus） fanning was determined in this study. Three treatments, including air aeration （6-9mg/L）, pure oxygen Ⅰ （6-9mg/L） and pure oxygen Ⅱ （15- 20mg/L）, were designed. Growth rate, survival rate and feed translation rate （FCE） were measured. The results indicated that： （1） When dissolved oxygen （DO） concentration varied from 6mg/L to 9mg/L, turbots in pure oxygen system were higher on growth （37.35g〉34.86g）, survival rate （100%〉99%） and FCE （14.3%〉 13.3%） than those of air system; （2） When dissolved oxygen （DO） concentration varied from 15mg/L to 20mg/ L, turbots growth （32.03g）, survival rate （94%） and FCE （11.1%） were lower than those of 6-9mg/L treatments; （3） A 7-month farming trial was conducted to determine growth difference of turbot between pure oxygen and air system. Length growth, weight growth, survival rate and FCR were better in pure oxygen system than in air system. The results suggested that pure oxygen aerating was better than air aerating in turbot farming system.
出处
《中国农学通报》
CSCD
2008年第3期456-458,共3页
Chinese Agricultural Science Bulletin
基金
国家科技攻关计划项目"无公害水产养殖技术研究与示范"(2004BA526B0201)
农业科技跨越计划"对虾工厂化养殖与质量安全控制技术"(2003-5)
青岛农业大学人才启动基金项目"对虾工厂化养殖系统分析及养殖废水无害化处理体系探讨"(630628)
