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

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=0．9158，0．5747，0．9252），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=0．5998，0．5717，0．6603），对血清总胆固醇影响显著（P=0．0258），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=0．0006），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=0．7433），对肉碱脂酰转移酶1（CPT1）mRNA表达量影响极显著（P=0．0034），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I。A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。

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

The experiment was conducted to study the effects of linoleic acid on growth performance and lipid metbolism 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(ADI),feed/gain(F/G)(P=0.915 8,0.574 ...