水溶性苜蓿多糖对肉仔鸡生长性能、胴体品质及生长激素和胰岛素样生长因子-1基因表达的影响  

Effects of Water Soluble Alfalfa Polysaccharide on Growth Performance,Carcass Quality,Growth Hormone and Insulin-Like Growth Factor-1 Gene Expressions of Broilers

作　　者：欧阳克蕙[1] 熊小文[1] 王文君[2] 胡耀[1] 赖贻奎 吴登堃[1] 

机构地区：[1]江西农业大学动物科学技术学院,江西省动物营养与饲料科学重点实验室,南昌330045 [2]江西农业大学食品科学与工程学院,南昌市农产品加工与质量控制重点实验室,南昌330045 [3]江西省吉安市畜牧局,吉安343000

出　　处：《动物营养学报》2014年第5期1272-1278,共7页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家科技支撑计划(2013BDA10B04-03);江西省科技支撑计划(2010BNA07400);南昌市科技局项目(洪财企[2012]-37号农业支撑计划4号);江西省教育厅落地计划项目(KJLD12021)

摘　　要：本试验旨在研究不同水平水溶性苜蓿多糖（ WSAP）对肉仔鸡生长性能、胴体品质及生长激素（GH）和胰岛素样生长因子-1（IGF-1）基因表达的影响。选取1日龄艾维茵肉仔鸡360只，随机分为4组，每组6个重复，每个重复15只鸡。对照组饲喂基础饲粮，试验组饲喂在基础饲粮基础上分别添加0.5％、1.0％、1.5％WSAP的试验饲粮，试验期42 d。结果表明：与对照组相比，添加1.0％和1.5％WSAP显著提高了第42天平均体重（ P＜0.05），显著或极显著提高了生长后期（21～42 d）和全期（1～42 d）的平均日增重和平均日采食量（P＜0.05或P＜0.01），显著降低了生长后期和全期的料重比（P＜0.05）；显著提高了胸肌率（P＜0.05），显著降低了腹脂率（P＜0.05）；添加WSAP还显著或极显著地提高了GH和IGF-1基因在肝脏、脂肪组织和肾脏中的表达（ P＜0.05或P＜0.01）。综合分析认为，WSAP可提高GH和IGF-1基因在肉仔鸡组织中的表达量，促进肉仔鸡的生长，改善胴体品质，以1.0％的添加水平效果较好。This trial was conducted to investigate the effects of water soluble alfalfa polysaccharide （ WSAP） on growth performance, carcass quality, growth hormone （ GH ） and insulin-like growth factor-1 （ IGF-1） gene expressions of broilers.A total of 360 1-day-old Avian broilers were randomly divided into 4 groups with 6 replicates per group and 15 broilers per replicate, which were fed a basal diet （ control group） , and the basal diet＋0.5%, 1.0%and 1.5%WSAP for 42 days, respectively.The results showed as follows： compared with control group, the broilers fed 1.0%and 1.5%WSAP had higher average body weight at day 42（P〈0.05）, average daily feed intake and average daily gain （ P〈0.05 or P〈0.01） and had lower feed to gain ratio （ P〈0.05） at the later stage （21 to 42 d） and the whole stage （1 to 42 d）;WSAP could also improve the percent-age of breast muscle （ P〈0.05） and decrease the percentage of abdominal fat （ P〈0.05）; meanwhile, WSAP enhanced the GH and IGF-1 gene expressions in liver, adipose and kidney （ P〈0.05 or P〈0.01） .The results suggest that WSAP can enhance the GH and IGF-1 gene expressions, and improve the growth performance and the carcass quality of broilers.It is recommended that the optimal supplemental level of WSAP is 1.0%.

关 键 词：肉仔鸡 水溶性苜蓿多糖 生长性能 胴体品质 生长激素 胰岛素样生长因子-1 

分 类 号：S831[农业科学—畜牧学]