稀土壳聚糖螯合盐对鲫鱼消化酶活力的影响

Effects of rare earth-chitosan chelate on enzymes activity of Carassius auratus L.

通过在日粮中添加不同水平的稀土壳聚糖螯合盐(rare earth-chitosan chelate,RECC),研究其对鲫鱼(Carassius auratus L.)消化酶活性的影响。研究结果表明,添加0.08%RECC可以极显著提高肠道淀粉酶和脂肪酶活力(P<0.01),显著提高肠道蛋白酶活力(P<0.05);添加0.16%RECC可以极显著增强肠道淀粉酶、蛋白酶和脂肪酶活力(P<0.01);添加0.24%RECC对肠道脂肪酶活力具有极显著促进作用(P<0.01),对肠道淀粉酶和蛋白酶活力具有显著促进作用(P<0.05);添加3个水平的RECC对肝胰脏消化酶活力均无显著作用(P>0.05)。

This feeding study was performed to investigate effects of different levels of rare earth-chitosan chelate （RECC）on intestinal and hepatopancreas enzymes activity of Carassius auratus L..Three hundred and sixty individuals were allotted to four dietary treatments：a control group and three RECC-treated groups which were fed with diets supplemented with 800,1600 mg/kg and 2400 mg/kg RECC respectively,each group with three duplicates.The whole feeding period lasted for 60 days.It was showed that in comparison with the control group,the 0.08 % RECC group had a better intestinal amylase and lipase activity（P 〈 0.01）,as well as protease activity（P 〈 0.05）;the 0.16 % RECC group also had a better intestinal amylase,protease and lipase activity（P 〈 0.0A ） ;the intestinal lipase activity in the 0.24 % group was significantly （P 〈 0.01 ）higher than that in the control group,as well as amylase and protease activity （P 〈 0.05）.However, three different supplemented levels of RECC all had no significantly （P 〉 0.05）influence on amylase,protease and lipase activity in hepatopancreas.