广东海洋大学学报2017，Vol.37Issue(6)：19-25,7.DOI:10.3969/j.issn.1673-9159.2017.06.004
外源酶制剂对黄颡鱼稚鱼消化酶活性、消化率及粪便氮磷含量的影响
Effects of Exogenous Enzyme Supplementation on Digestive Enzyme Activity, Apparent Digestibility and Fecal Nitrogen and Phosphorus Content of Juvenile Yellow Catfish
摘要
Abstract
A 56-day feeding trail was conducted to evaluate the effects of exogenous enzyme on digestive enzyme activity, apparent digestibility, fecal nitrogen and phosphorus contents of the yellow catfish larvae (Pelteobagrus fulvidraco; 1.02±0.01 g initial body weight). They were supplemented with either 100 IU/kg of phytase or 400 mg/kg of compound enzyme preparation (CEP) in practical formulation diet based on fishmeal, soybean meal and double-low rapeseed meal as protein resources. Results indicated that fish fed diets associated with exogenous enzyme enhanced digestive enzyme activities, with higher (P < 0.05) pepsase in experimental groups than that of control. Similarly, addition of phytase to the diet exhibited greater (P < 0.05) activities of intestinal proteases and amylase in the stomach as compared to control. The phytase treated group had higher (P < 0.05) apparent digestibility coefficients (ADC) of dry matter, crude protein, gross energy, ash and total phosphorus than those of control, as well as greater (P < 0.05) ADC of ash and total phosphorus than the CEP group. Moreover, the CEP increased (P < 0.05) ADC of crude fat and gross energy of diet as compared with control. There was no difference in the fecal nitrogen content between experimental groups and control (P > 0.05), and addition of phytase significantly increased (P < 0.05) fecal phosphorus content as compared to that of the control. In conclusion, phytase decreased production of fecal phosphorus for yellow catfish. These outcomes likely reflect that the addition of phytase in diet could be involved in enhancing digestive enzyme activity and increasing the ADC of nutrients.关键词
植酸酶/复合酶/黄颡鱼/稚鱼/消化酶活/消化率/粪便氮、磷Key words
phytase/compound enzyme preparation/yellow catfish larvae/digestive enzyme activity/apparent digestibility/fecal nitrogen and phosphorus content分类
农业科技引用本文复制引用
王国霞,孙育平,牛凤池,何飞,莫文艳,朱喜锋,曹俊明,黄燕华..外源酶制剂对黄颡鱼稚鱼消化酶活性、消化率及粪便氮磷含量的影响[J].广东海洋大学学报,2017,37(6):19-25,7.基金项目
广东省海洋渔业科技与产业发展专项(A201401C03) （A201401C03）
2016年省级现代农业科技创新联盟建设(2016LM082,2016LM083) （2016LM082,2016LM083）
