载菌蒙托石改善鲫养殖水质和生长性能的研究

Effect of Probiotics-loaded Montmorillonite on Water Quality and Growth Performances of Cultured Allogynogenetic Crucian Carp

以附载益生菌—沼泽红假单胞菌的蒙托石为研究对象,通过对鲫养殖水质指标和生长性能的测定,研究了其作用效果。试验分为1个对照组和3个试验组(T1、T2、T3分别添加一定量的沼泽红假单胞菌、蒙托石和载菌蒙托石)。试验结果表明,与对照组相比,试验组T3显著降低了(P<0.01)养殖水体后期氨氮、亚硝酸盐氮、硝酸盐氮、化学需氧量和硫化物的含量,提高了鲫的质量日增长和质量相对增长率(P<0.01),改善效果优于T1和T2。试验组T1和T2在生长指标上与对照组比较,虽有不同程度的提高,但差异不显著(P>0.01)。

The effect of Rhodopseudomonas palustris-loaded montmorillonite on water quality and growth performances was studied in cultured allogynogenetic crucian carp （Carassius auratus ）. Rhodopseudomonas palustris （ T1 ）, montmorillonite （T2） and Rhodopseudomonas palustris-loaded montmorillonite （ T3 ） were separately added into twelve aquaria and the aquaria without addition was as control group with three triplication for each treatment group. The results showed that there were very significantly lower concentrations of ammonia nitrogen, nitrite, nitrate, CODMn and sulfide and higher daily weight gain and relative gain rate in Group T3 than those in the control group （P 〈0.01 ）. Moreover, the fish in groups T1 and T2 showed better growth performance than that in the control group without significant difference（ P 〉 0.05）.