1. School of Life Science and Technology, Dalian Fisheries Univ, Dalian 116023, China;2. Marine Fisheries Research Institute of Liaoning Province, Dalian 116023, China
Abstract: The effects of dietary protein levels (crude protein 30% to 60%) on the growth and digestive enzyme activities in Penaeus chinensis were studied. The 40-day feeding experiment showed that protease and amylase activities in the shrimp increased with the increase in dietary protein levels when dietary protein levels increased from 30% to 50%, and decreased as the dietary protein level was above 50%. However, there was no significant difference in the activities of lipase among the treatments. The shrimp fed the diet containing dietary protein of 45% had the highest growth rate and the shrimp fed the diet containing dietary protein of 50% had the highest survival rate. The mechanism of influence of dietary protein levels on digestive enzymes is discussed.
吴垠, 孙建明, 周遵春, 桂远明. 饲料蛋白质水平对中国对虾生长和消化酶活性的影响[J]. 大连海洋大学学报, 2003, 18(4): 258-262.
WU Yin, SUN Jian-ming, ZHOU Zun-chun, GUI Yuan-ming. The effects of dietary protein levels on the growth and activities of digestive enzymes in shrimp,Penaeus chinensis. Journal of Dalian Ocean University, 2003, 18(4): 258-262.