添加缬氨酸对泌乳母猪血清和乳中生化免疫指标及激素水平的影响  

Effects of valine supplementation on serum and milk biochemical and immune indices and hormone levels of lactating sows

作　　者：陈熠[1] 彭艺[1] 贺建华[1] 邓近平 贺赛美 易德玮 

机构地区：[1]湖南农业大学动物科技学院 [2]湖南正虹科技发展股份有限公司

出　　处：《中国饲料》2009年第17期15-20,共6页China Feed

基　　金：湖南省科技重大专项(2007FJ1003);湖南省教育厅重点项目(06A026)

摘　　要：本试验旨在研究日粮中添加缬氨酸对泌乳母猪血清和乳中生化免疫指标及激素水平的影响。选取预产期、胎次和体况相近,健康状况良好的长白×大约克母猪32头,随机分为4个处理组,每组8个重复,每个重复1头母猪。从妊娠107d到仔猪21d断奶,对照组、试验组1、试验组2和试验组3分别饲喂基础日粮(含赖氨酸0.93%、缬氨酸0.84%)、基础日粮+0.10%缬氨酸、基础日粮+0.25%缬氨酸和基础日粮+0.40%缬氨酸。结果表明:日粮中添加缬氨酸显著提高了母猪泌乳第10、18d血清白蛋白浓度(P<0.05),提高了血清IgM(免疫球蛋白M)和IgG(免疫球蛋白G)浓度,提高了泌乳第10(P>0.05)、18d(P<0.05)血清催乳素浓度,血清尿素氮浓度以试验组2最低;显著提高了母猪泌乳第14d乳中胰岛素浓度(P<0.05),提高了第1、14天乳中生长激素浓度,其中试验组2与对照组相比差异显著(P<0.05),有提高乳中白蛋白和IgM浓度的趋势(P>0.05);母猪日粮中添加缬氨酸有降低仔猪哺乳各阶段和全期腹泻率的趋势(P>0.05)。因此,母猪日粮中添加缬氨酸可促进泌乳,改善机体的新陈代谢和免疫机能,提高乳源性生长因子的浓度,从而促进仔猪生长。Effects of dietary valine supplementation on serum and milk biochemical indexes,immune indexes,hormone levels of lactating sows were investigated in this study.Thirty-two healthy sows（LandracexYorkshire ,similar expected date of confinement,parity and body condition）were divided into 4 groups with 8 replications, each replication containing 1 sow.Control group,trial group 1,2 and 3 were fed basal diet（0.93 % lysine,0.84 % valine）supplemented with 0 %, 0.10 %,0.25 % and 0.40 % valine respectively from 107 d of gestation to 21 d of lactation （weaning）.The results indicated that,dietary valine supplementation significantly increased serum albumin（ALB）concentrations at the 10th day and the 18th day of lactation （P 〈 0.05）,and increased serum IgM （immunoglobulin M）and IgG （immunoglobulin G）concentrations,and increased serum prolactin （PRL）concentrations at the 10th day （P 〉 0.05）and the 18th day （P 〈 0.05）of lactation.Trial group 2 got the lowest blood urea nitrogen （BUN）concentrations;it significantly increased milk insulin （INS） concentrations at the 14th day of lactation （P 〈 0.05）,and increased milk GH （growth hormone）concentrations at the 1st day and the 14th day of lactation with significant difference in trial group 2 compared with control group （P 〈 0.05）, and tended to increase milk A LB and IgM concentrations （P 〉 0.05）;meanwhile,it tended to reduce diarrhea rate in suckling pigs （P 〉 0.05 ）.Therefore, dietary valine supplementation improved sows＇ lactating performance, metabolism,immune function and increased milk-borne growth factors concentrations so as to get a better growing performance of suckling pigs.

关 键 词：泌乳母猪 生化免疫指标 激素水平 

分 类 号：S816.7[农业科学—饲料科学]