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实验设置了螺旋藻添加组(配合饵料中添加螺旋藻)、实载组(螺旋藻的短钝溞载体)、空载组 (未装载螺旋藻的短钝溞)、对照组(仅投喂配合饵料作为空白对照)等4种饲养条件,对黄颡鱼幼苗进行了 8周的饲养培育。以体长、体重及成活率为鱼苗培育的效果指标,以氨氮(NH_4~+-N)、化学需氧量(COD)、 固态悬浮物(SS)为鱼苗培育环境的水质指标,探讨了螺旋藻及其短钝溞载体在黄颡鱼苗健康化培育中的应 用,分析了短钝溞作为螺旋藻活载体培育黄颡鱼幼苗的生长效果及生态健康机理。研究结果表明:饵料中添 加螺旋藻在早期可促进鱼苗生长,但随着时间的推移则会引起水质污染,NH_4~4-N、COD 和 SS 分别为16、 4. 9和6倍,溶解氧浓度(DO)大幅下降,从而抑制了鱼苗生长发育甚至成活;利用短钝溞作螺旋藻实载体, 培育水体经8周的试养,其 NH_4~+-N、COD 和 SS 仅仅分别为13、 2. 5和3倍,DO 水平仍然较高,鱼苗培育 环境的水质指标好于添加组,鱼苗生长及成活率为最高。
Spirulina addition group (spirulina added with bait), spirulina (spirulina short blunt carrier), empty group (spirulina not loaded with spirulina) and control group Bait as a blank control) and other four kinds of breeding conditions, the catfish seedlings for eight weeks of breeding. The effects of body length, body weight and survival rate on fry breeding were studied. The effects of ammonia nitrogen (NH 4 + -N), chemical oxygen demand (COD) and solid suspension (SS) Algae and their short blunt pomfret carrier in the healthy cultivation of Catfish fry, analysis of the short bluntorium as a spirulina live carrier cultivation of catfish growth effect and ecological health mechanism. The results showed that adding Spirulina in the diet could promote fry growth in the early stage, but could cause water pollution with the passage of time. The NH 4 -4 -N, COD and SS were 16 and 4, respectively. 9 and 6 times, dissolved oxygen concentration (DO) decreased significantly, thereby inhibiting the fry growth and development or even survival; the use of short blunt snails as spirulina carrier, incubation of water after 8 weeks trial, the NH4 + -N, COD And SS only 13, 2 respectively. 5 and 3 times, DO level is still high, water quality indicators of fry breeding environment is better than the addition group, fry growth and survival rate is the highest.