日粮添加亚油酸对断奶至2月龄肉兔生长性能、免疫指标及脂质代谢的影响  

Effects of dietary linoleic acid on growth performance,immune indexes and lipid metbolism of weaner to 2-month-old growing meat rabbits

作　　者：李荣刚[1,2] 麻名文[1,2] 王春阳[1,2] 王雪鹏[1,2] 李福昌[1,2] 

机构地区：[1]山东农业大学动物科技学院,山东泰安271018 [2]山东省动物生物技术与疫病防治重点实验室,山东泰安271018

出　　处：《中国兽医学报》2011年第11期1676-1680,共5页Chinese Journal of Veterinary Science

基　　金：国家公益性行业(农业)科研专项(3-52);现代农业产业技术体系建设专项(nycytx-44)

摘　　要：选用断奶伊拉肉兔200只,随机分成5组,每组40个重复,每个重复1只肉兔,分别饲喂添加0、0.3%、0.6%、0.9%和1.2%亚油酸(LA)的日粮。结果表明,在初始体质量无显著差异的情况下,日粮添加LA对平均日采食量、平均日增重和料重比影响不显著(P=0.915 8,0.574 7,0.925 2),对血清甘油三酯、高密度脂蛋白和极低密度脂蛋白影响不显著(P=0.599 8,0.571 7,0.660 3),对血清总胆固醇影响显著(P=0.025 8),0.9%和1.2%添加组显著低于0和0.6%添加组(P<0.05),对血清低密度脂蛋白影响极显著(P=0.000 6),0.9%和1.2%添加组显著低于0和0.6%添加组(P<0.05);免疫器官肝、脾指数和血清免疫球蛋白IgG、IgA、IgM受日粮LA水平影响不显著(P>0.05);日粮LA水平对肝脏乙酰辅酶A羧化酶(ACC)mRNA表达量影响不显著(P=0.743 3),对肉碱脂酰转移酶1(CPT1)mRNA表达量影响极显著(P=0.003 4),其中0.9%和1.2%添加组极显著高于对照组(P<0.01)。日粮添加LA对断奶至2月龄肉兔生产性能及免疫指标无显著影响,主要影响机体的脂质代谢。The experiment was conducted to study the effects of linoleic acid on growth performance and lipid met- holism of weaner to 2-month-old growing meat rabbits. Two hundred weaned meat rabbits were randomly assigned to 5 groups of 40 replicates with 1 each. Rabbits in 5 groups were fed basal diet with 0,0.3% ,0.6%,0.9% and 1.2% linoleic acid, respectively. The results showed that： dietary linoleic acid levels did not affect significantly average daily gain （ADG） ,average daily intake （ADD ,feed/gain（F/G） （P=0. 915 8,0. 574 7,0. 925 2） ; Dietary linoleic acid lev- els did not affect significantly total glycerinate（TG）, high density lipoprotein（HDL）, very low density lipoprotein （VLDL） （P=0. 599 8,0. 571 7,0. 660 3）,but had significantly influence on total cholesterol（TC）（P=0. 025 8）and low density lipoprotein（I.DL） （P=0. 000 6） ,were lower in 0.9~and 1.2~groups than those of 0 and 0.6% groups （P〈0.05）. Dietary linoleic acid levels did not affect significantly spleen index, liver index, serum IgG, IgA, IgM（P〈0.05）. Dietary linoleic acid levels did not affect significantly the expression of acetyl-CoA carboxylase（ACC）mRNA （P = 0. 743 3）, but had significantly influence on the expression of carnitine palmitoyltransferase 1 （CPT1）mRNA（P =0. 003 4） ,and were significantly higher in 0.9%and 1.2%groups than that of control group （P〈0.01）. Dietary linoleic acid levels did not affected significantly growth performance,immune indexes,mainly changes the body＇s lipid metabolism.

关 键 词：亚油酸 生长性能 免疫指标 血清生化 MRNA表达量 

分 类 号：S816.7[农业科学—饲料科学]