动物营养学报2019，Vol.31Issue(8)：3736-3746,11.DOI:10.3969/j.issn.1006⁃267x.2019.08.035
饲粮中黄芪多糖添加水平与n⁃6／n⁃3多不饱和脂肪酸配比互作对育成生长期北极狐生长性能及血清生化指标的影响
Effects of Interaction of Dietary Astragalus Polysaccharide Supplemental Level and n?6／n?3 Polyunsaturated Fatty Acid Ratio on Growth Performance and Serum Biochemical Parameters of Arctic Fox During Growing Period
摘要
Abstract
This experiment was conducted to study the Interaction of dietary Astragalus polysaccharide ( APS) supplemental level and n?6／n?3 polyunsaturated fatty acid ( PUFA) ratio on growth performance and serum bio?chemical parameters of arctic fox during growing period. A double?factor trial design was used in this experi?ment. One factor was APS supplemental level which was 0 and 160 mg／kg, respectively. The other factor was n?6／n?3 PUFA ratio which was 3 and 9, respectively. All fox fed a diet without APS and n?6／n?3 PUFA ratio of 3 in order to adapt powdered diet. After feeding 7 days, forty?eight male 102?day?old arctic fox were ran?domly divided into 4 groups with 12 replicates per group and 1 fox per replicate. The diets without APS and n?6／n?3 PUFA with the ratio of 3 and 9 were used in group 1 and group 2, respectively. The diets with 160 mg／kg APS and n?6／n?3 PUFA with the ratio of 3 and 9 were used in group 3 and group 4, respectively. The trial period was 46 days. The results showed as follows: 1) at 102 to 125 days of age, APS supplemental level was 0 mg／kg, the average daily gain ( ADG) of arctic fox in unadded APS group was significantly higher than that of added 160 mg／kg APS group ( P＜0.01) , and when the ratio of n?6／n?3 PUFA was 9, the feed／gain ( F／G) of arctic fox was significantly higher than that when the ratio of n?6／n?3 PUFA was 3, with the highest ADG and lowest F／G in the group 2. At 125 to 147 days of age, the ADG in added 160 mg／kg APS group was significantly higher than that in un?added APS group ( P＜0.05) , and the F／G was significantly low?er than that in un?added APS group ( P＜0.01). The group 4 had the highest ADG and the lowest F／G among four groups. The interaction between dietary APS supplemental level and n?6／n?3 PUFA ratio significantly af?fected the average daily feed intake ( ADFI) at 102 to 125 and 125 to147 days of age ( P＜0.01), with the highest ADFI in group 1 those two stages. 2) Serum glucose ( GLU) content in added 160 mg／kg APS group was significantly lower than that in un?added APS group ( P＜0.05) , and when the ratio of n?6／n?3 PUFA was 9, the serum GLU content was significantly lower than that when the ratio of n?6／n?3 PUFA was 3 ( P＜0.01). The group 4 had the lowest GLU content. The interaction between dietary APS supplemental level and n?6／n?3 PUFA ratio or dietary APS supplemental level or n?6／n?3 PUFA ratio had no significant effects on serum tri? glyceride ( TG) , cholesterol ( CHO) , high density lipoprotein cholesterol ( HDL?C) and low density lipopro?tein cholesterol ( LDL?C) contents ( P＞0.05). 3) The interaction between dietary APS supplemental level and n?6／n?3 PUFA ratio was significantly affected the contents of serum immunoglobulin M ( IgM) and interleukin?2 ( IL?2). Serum IgM was the highest in group 4, which was significantly higher than that of group 2 and group 3 ( P＜0.05) , but no significant difference in the serum IL?2 content was found among four groups ( P＞0.05). Serum immunoglobulin G ( IgG) content in added 160 mg／kg APS group was significantly higher than that in un?added APS group ( P＜0.05). Group 4 was slightly higher, but no significant difference was found a?mong four groups ( P＞0.05). 4) Serum albumin／globulin ( A／G) in added 160 mg／kg APS group was signif?icantly lower than that in un?added APS group ( P＜0.05) , which was the lowest in group 4. Dietary APS sup?plemental level or n?6／n?3 PUFA ratio or the interaction of them had no significant effects on serum total pro?tein ( TP) , albumin ( ALB) and globulin ( GLOB) contents ( P＞0.05). In summary, when dietary APS sup?plemental level is 160 mg／kg and the ratio of n?6／n?3 PUFA is 9, it has regulation effect on blood glucose, and can increase the contents of serum IgM and IgG, decrease serum A／G, thus improve the growth perform?ance of arctic fox at the age of 125 to 147 days of age.[ Chinese Journal of Animal Nutrition, 2019, 31(8) :3736?3746]关键词
黄芪多糖/n⁃6／n⁃3多不饱和脂肪酸配比/北极狐/生长性能/血清生化指标Key words
Astragalus polysaccharide/n⁃6／n⁃3 PUFA ratio/arctic fox/growth performance/serum bio⁃chemical parameters分类
农业科技引用本文复制引用
钟伟,刘晗璐,孙伟丽,李光玉..饲粮中黄芪多糖添加水平与n⁃6／n⁃3多不饱和脂肪酸配比互作对育成生长期北极狐生长性能及血清生化指标的影响[J].动物营养学报,2019,31(8):3736-3746,11.基金项目
中国农业科学院科技创新工程(CAAS⁃ASTIP⁃2019⁃ISAPS) （CAAS⁃ASTIP⁃2019⁃ISAPS）
吉林省重点科技成果转化项目(20160307022NY) （20160307022NY）
