动物营养学报2011，Vol.23Issue(11)：2000-2008,9.DOI:10.3969/j.issn.1006-267x.2011.11.022
饲料中添加低聚木糖对奥尼罗非鱼生长性能和血清生化指标的影响
Effects of Dietary Xylooligosaccharides on Growth Performance and Serum Biochemical Indices of Tilapia (Oreochromis niloticus × O.aureus)
摘要
Abstract
This experiment was conducted to investigate the effects of dietary xylooligosaccharides (XOS) on growth performance and serum biochemical indices of tilapia (Oreochromis niloticus x O. Aureus). A total of 960 fish with an average body weight of (5.09+0. 12) g were randomly divided into 6 groups with 4 replicates in each group and 40 fish per replicate. The fish in control group (GO group) were fed a basal diet, and those in other 5 groups (G200, G400, G600, G800 and G1000 groups) were fed the basal diet supplemented with 200, 400, 600, 800 and 1 000 mg/kg XOS, respectively. After 8 weeks feeding, weight gain rate (WGR) , feed intake (FI) , feed conversion ratio (FCR), protein efficiency ratio (PER) and survival rate ( SR) were measured. The activities of superoxide dismutase (SOD) , alkaline phosphatase ( AKP) and catalyse (CAT) , and total protein (TP) content in serum were determined every 2 weeks, respectively. The results showed that there was no significant difference in the WGR of fish among all groups (P >0. 05), however, fish fed diets supplemented with 400 to 1 000 mg/kg XOS had higher WGR than those fed the basal diet. FI and SR of fish in all groups were not significantly affected by the dietary XOS (P > 0. 05). PER in the G800 group was significantly higher than that in the G200 group (P <0. 05) , and FCR in the G800 group was significantly lower than that in the G200 group (P <0. 05). There was no significant difference in the body conventional components of tilapia (P >0.05). At the 4th week, serum AKP, CAT activities and TP content in the groups with the diets containing XOS were higher than those in the control group, and a significant difference was found between the G400 group and control group (P <0.05). At the 6th week, serum SOD, AKP, CAT activities and TP content in the G400 group were significantly higher than those in the control group (P <0.05). At the 8th week, serum SOD activity in the groups with the diets containing XOS was significantly higher than that in the control group (P <0. 05). The results suggest that supplementation of XOS into the diets show no significant effects on growth performance and body conventional components of the tilapia (Oreochromis niloticus x O. Aureus) , but the serum biochemical indices are significantly affected by XOS supplementation, and show a dynamic change with time. Based on the activities of serum SOD, AKP and CAT at the 6th week, the optimal dietary XOS supplemental level is 600 to 710 mg/kg.关键词
低聚木糖/奥尼罗非鱼/生长性能/血清生化指标Key words
xylooligosaccharides/ tilapia ( Oreochromis niloticus x O. Aureus) / growth performance/ serum biochemical indices分类
农业科技引用本文复制引用
张荣斌,曹俊明,黄燕华,王国霞,陈晓瑛,严晶,周婷婷,孙智武..饲料中添加低聚木糖对奥尼罗非鱼生长性能和血清生化指标的影响[J].动物营养学报,2011,23(11):2000-2008,9.基金项目
广东省省院合作项目(2009B091300136) （2009B091300136）
广东省基金团队项目(10351064001000000) （10351064001000000）
