菊粉对断奶仔猪生长性能、养分表观消化率及抗氧化能力的影响  

Effects of Inulin on Growth Performance,Nutrient Apparent Digestibilities and Antioxidant Capacity of Weaned Piglets

作　　者：王维康 陈代文[1] 余冰[1] 黄志清[1] 毛湘冰[1] 郑萍[1] 虞洁[1] 罗钧秋[1] 罗玉衡[1] 阎辉 何军[1] WANG Weikang;CHEN Daiwen;YU Bing;HUANG Zhiqing;MAO Xiangbing;ZHENG Ping;YU Jie;LUO Junqiu;LUO Yuheng;YAN Hui;HE Jun(Key Laboratory of Animal Disease-Resistance and Nutrition of Sichuan Province,Key Laboratory of Animal Disease-Resistance and Nutrition of Ministry of Education,College of Institute of Animal Nutrition,Sichuan Agricultural University,Chengdu 611130,China)

机构地区：[1]四川农业大学动物营养研究所,动物抗病营养教育部重点实验室,动物抗病营养四川省重点实验室,成都611130

出　　处：《动物营养学报》2021年第2期760-768,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：四川省发展计划(2018NZDZX0005);四川省动物饲料生物技术青年创新团队(2016TD0028)。

摘　　要：本试验旨在研究饲粮添加不同水平菊粉对断奶仔猪生长性能、养分表观消化率及抗氧化能力的影响。选取32头平均体重为(7.10±0.20)kg的杜长大(DLY)断奶仔猪,随机分为4组,每组8个重复,每个重复1头猪。对照组饲喂基础饲粮,试验组分别在基础饲粮中添加2.5、5.0和10.0 g/kg的菊粉(等量替代基础饲粮中的玉米)。试验期21 d。结果表明,与对照组相比:1)饲粮添加2.5、5.0和10.0 g/kg菊粉对断奶仔猪平均日采食量和平均日增重无显著影响(P>0.05),饲粮添加2.5、5.0和10.0 g/kg菊粉可显著提高断奶仔猪粗灰分表观消化率(P<0.05),饲粮添加2.5和5.0 g/kg菊粉可显著提高断奶仔猪粗蛋白质表观消化率(P<0.05)。2)饲粮添加2.5 g/kg菊粉可显著提高血清中总超氧化物歧化酶(T-SOD)活性(P<0.05);饲粮添加2.5、5.0和10.0 g/kg菊粉可显著降低肝脏中丙二醛(MDA)含量(P<0.05);饲粮添加2.5和5.0 g/kg菊粉可显著提高空肠中过氧化氢酶(CAT)活性(P<0.05),饲粮添加2.5和5.0 g/kg菊粉可显著降低回肠中MDA含量(P<0.05),饲粮添加2.5 g/kg菊粉可显著提高十二指肠中CAT活性(P<0.05)。3)饲粮添加2.5、5.0和10.0 g/kg菊粉可显著提高肝脏中核因子E2相关因子2(Nrf2)的mRNA相对表达量(P<0.05),饲粮添加5.0和10.0 g/kg菊粉可显著提高肝脏中血红素氧合酶-1(HO-1)的mRNA相对表达量(P<0.05)。4)饲粮添加2.5、5.0和10.0 g/kg菊粉可显著提高十二指肠中HO-1的mRNA相对表达量和空肠中Nrf2的mRNA相对表达量(P<0.05),饲粮添加2.5和5.0 g/kg菊粉可显著提高回肠中HO-1和Nrf2的mRNA相对表达量(P<0.05),饲粮添加2.5 g/kg菊粉可显著提高空肠中Kelch样环氧氯丙烷相关蛋白1(Keap1)的mRNA相对表达量(P<0.05),饲粮添加10.0 g/kg菊粉可显著提高空肠中HO-1和Keap1的mRNA相对表达量(P<0.05)。综上所述,饲粮添加菊粉对断奶仔猪生长性能无显著影响,但可改善养分表观消化率,提高抗氧化能力。本试验条件下,断奶This experiment was conducted to investigate the effects of inulin on growth performance,nutrient apparent digestibilities and antioxidant capacity of weaned piglets.Thirty-two Duroc×Landrace×Yorkshire(DLY)weaned piglets with an average weight of(7.10±0.20)kg were randomly divided into 4 groups with 8 replicates in each group and 1 pig in each replicate.Pigs in the control group were fed a basal diet,and others in experimental groups were fed basal diets supplemented with 2.5,5.0 and 10.0 g/kg inulin(equal replaced the corn in basal diet),respectively.The experiment lasted for 21 days.The results showed that compared with the control group:1)dietary 2.5,5.0 and 10.0 g/kg inulin had no significant effects on the average daily feed intake and average daily gain of weaned piglets(P>0.05),dietary 2.5,5.0 and 10.0 g/kg inulin significantly increased the ash apparent digestibility of weaned piglets(P<0.05),and dietary 2.5 and 5.0 g/kg inulin significantly increased the crude protein apparent digestibility of weaned piglets(P<0.05).2)Dietary 2.5 g/kg inulin significantly increased the serum total superoxide dismutase(T-SOD)activity(P<0.05);dietary 2.5,5.0 and 10.0 g/kg inulin significantly decreased the liver malondialdehyde(MDA)content(P<0.05);dietary 2.5 and 5.0 g/kg inulin significantly increased the jejunum catalase(CAT)activity(P<0.05),dietary 2.5 and 5.0 g/kg inulin significantly decreased the ileum MDA content(P<0.05),and dietary 2.5 g/kg inulin significantly increased the duodenum CAT activity(P<0.05).3)Dietary 2.5,5.0 and 10.0 g/kg inulin significantly increased the mRNA relative expression level of nuclear factor-E2-related factor 2(Nrf2)in liver(P<0.05),and dietary 5.0 and 10.0 g/kg inulin significantly increased the mRNA relative expression level of heme oxygenase-1(HO-1)in liver(P<0.05).4)Dietary 2.5,5.0 and 10.0 g/kg inulin significantly increased the mRNA relative expression level of HO-1 in duodenum and mRNA relative expression level of Nrf2 in jejunum(P<0.05),dietary 2.5 and 5.0 g/kg inulin significa

关 键 词：菊粉 断奶仔猪 养分表观消化率 抗氧化 

分 类 号：S828[农业科学—畜牧学]