日粮代谢葡萄糖水平对断奶仔猪生长性能和血液生化指标的影响

摘要

为研究断奶仔猪日粮代谢葡萄糖的适宜水平,本试验选择体重为5.5 kg左右的21日龄断奶仔猪30头,随机分为5组,每组6个重复,每个重复l头猪.Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ组在断奶后1～14 d分别饲喂代谢葡萄糖水平为126.4、202.6、235.7、331.6、371.5 g/kg的5种日粮,在断奶后15～42 d分别饲喂代谢葡萄糖水平为37.6、132.5、300.0、354.3、412.5 g/kg的5种日粮,定期称重并记录采食量,颈静脉抽血检验.结果表明:Ⅱ组仔猪在2个阶段的日增重均显著高于Ⅰ、Ⅳ组(P＜0.05),Ⅱ组饲料转化效率均显著高于Ⅰ、Ⅳ、Ⅴ组(P＜0.05);断奶后l～14d,Ⅰ组的总蛋白和白蛋白水平均显著高于Ⅲ组(P＜0.05);断奶后15～42 d,Ⅲ组的总蛋白含量显著高于Ⅰ、Ⅳ、Ⅴ组(P＜0.05),Ⅱ组的白蛋白含量显著高于日粮Ⅳ、Ⅴ组,Ⅴ组的尿酸含量显著高于Ⅰ、Ⅲ、Ⅳ组(P＜0.05).本试验结果表明,日粮代谢葡萄糖水平会影响断奶仔猪生长性能以及血液生化指标,仔猪断奶后1～14 d,日粮代谢葡萄糖适宜水平为202.6～235.7 g/kg;仔猪断奶后15～42 d日粮代谢葡萄糖适宜水平为132.5～300.0 g/kg.%In order to study the proper level of metabolizable glucose of fed to weaned piglets,30 weaned piglets (21-dayold and average body weight of 5.5 kg) were divided into 5 treatment groups,with 6 replicates per treatment and 1 pig per replicate.This trial was divided into two phase including pre-weaning (Day 1～14) and post-weaning (Day 15 ～42).Stage Ⅰ:Ⅰ,Ⅱ,Ⅲ,Ⅳ and Vsupplement levels of metabolizable glucose (g/kg) were 126.4,202.6,235.7,331.6 and 371.5 g/kg;and those of stage Ⅱ were 37.6,132.5,300,354.3 and 412.5 g/kg.Piglets were weighed and feed intake was recorded regularly,blood was collected by jugular vein for test.Results showed that during two stages of trail,average daily gain of piglets in group Ⅱ was significantly larger than that in group Ⅰ and Ⅳ (P＜0.05),and feed conversion efficiency of piglets in group Ⅱ was remarkably higher than that in group Ⅰ,Ⅳ and Ⅴ (P＜0.05);during stage Ⅰ,levels of total protein and albumin in group Ⅰ were substantially higher than those in group Ⅲ (P ＜0.05);during stage Ⅱ,total protein contents in group Ⅲ were obviously higher than that in group Ⅰ,Ⅳ and Ⅴ (P＜0.05),albumin levels in group Ⅱ were much higher than that in group Ⅳ and Ⅴ,and uric acid levels in group Ⅴ were significantly higher than that in group Ⅰ,Ⅲ and Ⅳ (P＜0.05).These results suggested that the metabolizable glucose level in diet could affect the growth performance and blood biochemical indexes,and in pre-weaning (Day 1～14),the proper level of metabolizable glucose of fed to weaned piglets was 202.6～235.7 g/kg,and in post-weaning (Day 15～42),the proper level of metabolizable glucose of fed to weaned piglets was 132.5～300.0 g/kg.