葛叶粉对肉鸡生长性能及血清生化、抗氧化和免疫指标的影响

选择同一条件下饲养的21日龄体重相近的新广麻鸡母鸡384只,随机分为4组,每组6个重复,每个重复16只,分别饲喂含0(对照组)、1%、2%和3%野葛(Pueraria lobata)叶粉的试验饲粮,试验期共49 d,旨在研究肉鸡饲粮中添加葛叶粉对其生长性能、血清生化、抗氧化和免疫指标的影响。结果表明:1)肉鸡饲粮中添加1%~3%葛叶粉对肉鸡平均日增重、平均日采食量和料肉比均无显著影响(P>0.05);2)添加2%、3%葛叶粉均能显著提高肉鸡血清白蛋白和低密度脂蛋白含量、降低甘油三酯含量和谷草转氨酶活性(P<0.05);添加3%葛叶粉还可提高肉鸡血清总蛋白含量,显著降低尿素氮、总胆固醇、高密度脂蛋白含量和谷丙转氨酶活性(P<0.05);3)添加1%~3%葛叶粉可显著提高肉鸡血清总抗氧化能力和谷胱甘肽过氧化物酶活性(P<0.05)、添加3%葛叶粉可显著降低血清丙二醛含量(P<0.05);4)添加1%葛叶粉能显著提高肉鸡血清免疫球蛋白M含量;添加2%葛叶粉显著提高肉鸡血清免疫球蛋白M含量、降低白细胞介素1β含量;添加3%葛叶粉显著提高肉鸡血清免疫球蛋白G和免疫球蛋白M含量、降低白细胞介素1β和白细胞介素2含量(P<0.05)。综上所述,饲粮中添加1%~3%葛叶粉对肉鸡生长性能无负面影响,能在一定程度上提高肉鸡抗氧化性能和免疫功能,有利于机体健康。葛叶粉可应用到肉鸡饲料中,添加3%效果更好。

Effects of kudzu leaf meal on growth performance and the biochemical,antioxidant,and immune indexes for serum from broilers

A total of 38421-day-old broilers with moderate body weights were randomly divided into four groups with six replicates per group and 16 birds per replicate.The broilers were fed a basal diet supplemented with 0(control group),1%,2%,or 3%kudzu leaf meal.The experiment lasted 49 days.This study aimed to investigate the effects of kudzu leaf meal on growth performance,serum biochemical indexes,and the antioxidant and immune function of broilers.The results showed 1)The kudzu leaf meal had no significant effect on average daily gain,average daily feed intake,and the feed to gain ratio of broilers(P>0.05);2)Diets supplemented with 2%and 3%kudzu leaf meal significantly increased serum albumin and low density lipoprotein content,and showed reduced triglyceride content and glutamic transaminase activity(P<0.05);the diet supplemented with 3%kudzu leaf meal significantly increased serum total protein and reduced the urea nitrogen,total cholesterol,high-density lipoprotein,and glutamine transaminase contents(P<0.05);3)Compared to the control group,the serum total antioxidant capacity and glutathione peroxidase activity of broilers in the kudzu leaf meal addition groups significantly increased and the malondialdehyde content of broilers in the 3%kudzu leaf meal group significantly decreased(P<0.05).4)Compared to the control group,the serum immunoglobulin M content of broilers in the 1%kudzu leaf meal group significantly increased,and the serum immunoglobulin M and Interleukin-1βcontents significantly increased in the 2%kudzu leaf meal group.The serum immunoglobulin G and immunoglobulin M contents significantly increased,whereas the Interleukin-1βand Interleukin-2 contents decreased in the 3%kudzu leaf meal group(P<0.05).In conclusion,diets supplemented with 1%to 3%kudzu leaf meal had no negative effects on growth performance,and increased the antioxidant and immune function and health of broilers to a certain extent.Kudzu leaf meal can be used in the diet of broilers and the addition of 3%kudzu leaf meal was the optimal dose.