饲粮中维生素E添加水平对育成期蓝狐生长性能、营养物质消化率、氮代谢和血清生化指标的影响  

Effects of Vitamin E Supplemental Level on Growth Performance,Nutrient Digestibility,Nitrogen Metabolism and Serum Biochemical Indices of Blue Foxes during Growing Period

作　　者：刘可园[1] 刘晗璐[1] 钟伟[1] 张新宇 史鸿鹏 李光玉[1] LIU Keyuan;LIU Hanlu;ZHONG Wei;ZHANG Xinyu;SHI Hongpeng;LI Guangyu(Institute of Special Economic Animal and Plant Science, Chinese Academy of Agricultural Sciences, Changchun 130112, China)

机构地区：[1]中国农业科学院特产研究所

出　　处：《动物营养学报》2019年第9期4170-4178,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：中国农业科学院科技创新工程(CAAS-ASTIP-2018-ISAPS)

摘　　要：本试验旨在研究饲粮中添加不同水平维生素E对育成期蓝狐生长性能、营养物质消化率、氮代谢和血清生化指标的影响。选取65日龄体重相近的健康雄性蓝狐75只,随机分为5组,每组15个重复,每个重复1只。6组蓝狐分别饲喂在基础饲粮(本底维生素E含量为19.34 mg/kg)基础上添加0(对照组)、50、100、150和200 mg/kg维生素E(添加形式为50%α-生育酚醋酸酯)的饲粮。预试期10 d,正试期60 d。在试验第30天从每组选出8只蓝狐,进行连续4 d的消化代谢试验。结果显示:饲粮中维生素E添加水平对第56天体重以及第29~56天平均日增重(ADG)、平均日采食量(ADFI)和料重比(F/G)有显著影响(P<0.05)。随饲粮中维生素E添加水平的升高,第29~56天ADG持续升高,而F/G持续降低,且上述2个指标在添加100、200、300 mg/kg维生素E组与对照组之间均存在显著差异(P<0.05)。饲粮中维生素E添加水平对育成期蓝狐脂肪消化率有显著影响(P<0.05)。添加200 mg/kg维生素E组蓝狐的脂肪消化率显著高于其他各组(P<0.05)。饲粮中维生素E添加水平对育成期蓝狐血清超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性有显著的影响(P<0.05)。添加100和150 mg/kg维生素E组蓝狐血清SOD活性显著高于添加50 mg/kg维生素E组(P<0.05);添加100、150、200 mg/kg维生素E组蓝狐血清GSH-Px活性显著高于对照组和添加50 mg/kg维生素E组(P<0.05)。饲粮中维生素E添加水平对育成期蓝狐血清免疫球蛋白G(IgG)含量有显著影响(P<0.05)。添加100、150、200 mg/kg维生素E组血清IgG含量显著高于对照组(P<0.05)。饲粮中维生素E添加水平对育成期对蓝狐血清总蛋白(TP)、白蛋白(ALB)、球蛋白(GLB)和甘油三酯(TG)含量有显著影响(P<0.05)。添加100、150和200 mg/kg维生素E组血清TG含量显著低于对照组(P<0.05),血清GLB含量显著高于对照组(P<0.05)。由此得出,饲粮中添加维生素E可提高育成期蓝狐的�This experiment was conducted to investigate the effects of vitamin E supplemental level on growth performance, nutrient digestibility, nitrogen metabolism and serum biochemical indices of blue foxes (Alopex lagopus) during growing period. Seventy-five male blue foxes at 65 days of age with the similar body weight were randomly assigned to 5 groups with 15 replicates per group and 1 fox per replicate. The foxes in 5 groups were fed diets with 5 supplemental levels[0 (control), 50, 100, 150 and 200 mg/kg] of vitamin E from α-tocopherol acetate (effective substance concentration of 50%) based on a basal diet (background vitamin E content was 19.34 mg/kg). The trial lasted for 60 days after 10 days adaption. Eight foxes were selected from each group, a digestion metabolism experiment was conducted for 4 days starting at the 30th day of the trial. The results showed as follows:1) dietary vitamin E supplemental level significantly affected the body weight of day 56, and the average daily gain (ADG), average daily feed intake (ADFI) and feed/gain (F/G) of day 29 to 56 (P<0.05). With the dietary vitamin E supplemental level increasing, the ADG of day 29 to 56 was improved continually, however, the F/G of day 29 to 56 was decreased continually. As well as, the two indicators of the groups supplemented with 100, 200 and 300 mg/kg vitamin E had significant difference with the control group (P<0.05). Dietary vitamin E supplemental level significantly affected the fat digestibility (P<0.05), and the fat digestibility of the group supplemented with 200 mg/kg vitamin E was significantly higher than that of other groups (P<0.05). The activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in serum were significantly affected by dietary vitamin E supplemental level (P<0.05). The activity of SOD in serum of groups supplemented with 100 and 150 mg/kg vitamin E was significantly higher than that of group supplemented with 50 mg/kg vitamin E (P<0.05). The activity of GSH-Px in serum of groups supplemented with

关 键 词：维生素E 蓝狐 生长性能 营养物质消化率 抗氧化能力 免疫球蛋白 

分 类 号：S816[农业科学—饲料科学]