摘要
用3种不同蛋白质水平及能量蛋白比(E/P)水平饲料投喂克氏原螯虾,分析比较不同饲料对克氏原螯虾生长及蛋白酶活力的影响。试验结果表明,当饲料蛋白质水平为31.86%、E/P为35.85kJ/g时,克氏原螯虾生长最快。随着饲料蛋白质含的上升,克氏原螯虾肠蛋白酶活力无显著变化(P>0.05),肝胰脏、胃蛋白酶活力显著增强(P<0.05);饲料E/P水平未引起胃、肠、肝胰脏蛋白酶活力的显著变化(P>0.05),当饲料蛋白质水平为31.47%、E/P为40.42 kJ/g时,克氏原螯虾蛋白酶活力最高。
Juvenile red swamp crayfish Procambarus clarkii was fed the diets containing different protein levels and energy to protein ratios to evaluate the effects of the dietary protein levels and energy to protein ratios on growth and protease activity. The crayfish had the best growth performance when fed the diets containing 31.86% of protein and E/P level of 35.85 kJ/g. The protease activity in hepatopancreas and stomach increased significantly with the increase in dietary protein. There were no significant effects of E/P levels on the protease activity in intestine, hepatopancreas and stomach. The maximal protease activity was observed in the crayfish fed the diets containing 31.47% of protein and E/P level of 40.42 kJ/g.
出处
《水产科学》
CAS
北大核心
2009年第12期741-744,共4页
Fisheries Science
基金
合肥市科技局招标项目[合科合同(农)字2005(3013)]
