饲粮酵母培养物水平对湖羊生长育肥性能和营养物质表观消化率的影响  

Effect of Dietary Yeast Culture Level on Growth,Fattening Performance and Apparent Digestibility of Nutrients in Hu Sheep

作　　者：张娜娜 王文盼 李飞[3] 郑琛[1] ZHANG Nana;WANG Wenpan;LI Fei;ZHENG Chen(College of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,China;Xi'an Xinhanbao Biotechnology Limited Company,Xi'an 710000,China;College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China)

机构地区：[1]甘肃农业大学动物科学技术学院,甘肃兰州730070 [2]西安鑫汉宝生物科技有限公司,陕西西安710000 [3]兰州大学草地农业科技学院,甘肃兰州730020

出　　处：《家畜生态学报》2023年第11期42-46,共5页Journal of Domestic Animal Ecology

基　　金：国家自然科学基金(31860657)。

摘　　要：试验旨在研究饲粮中添加不同水平酵母培养物对湖羊生长性能和营养物质表观消化率的影响。采用单因素试验设计,按照同质性原则将60只体重(20.70±2.82)kg接近、日龄相似的湖羊公羔按照日粮中酵母培养物(YC)不同添加水平随机分为4个处理组:对照组(CON组)、0.5%YC组、1%YC组和2%YC组,每组15个重复,每个重复1只湖羊,试验期为70 d。结果表明,1%~2%YC组湖羊中性洗剂纤维(NDF)和酸性洗剂纤维(ADF)表观消化率显著高于CON组(P<0.05),随着YC添加量的增加有提高湖羊末体重(FBW,P=0.151)和干物质采食量(DMI,P=0.836)及降低料重比(F/G,P=0.110)的趋势。综上所述,在日粮中添加2%YC能够提高湖羊的生产性能和饲料纤维物质的表观消化率。This study was conducted to investigate the effects of dietary supplementation of yeast culture(YC)on growth performance and apparent digestibility of Hu sheep.Sixty male Hu sheep(20.70±2.82 kg initial body weight)with similar age were randomly assigned to four treatments for a 70-day feeding experiment,which were CON group,0.5%YC group,1%YC group,2%YC group.Each group had 15 repetition,each repetion 1 sheep.The results showed that the apparent digestibility of neutral detergent fibre(NDF)and acid detergent fibre(ADF)in Hu sheep fed 1%to 2%YC diet was significantly higher than the CON group(P<0.05).With the increase of YC,there was a tendency that the final weight(FBW,P=0.151)and dry matter intake(DMI,P=0.836)increased,and the feed-to-weight ratio(F/G,P=0.110)of Hu sheep reduced.Overall,these results clarified the dietary supplementation of 2%YC can improve production performance and fiber digestion of Hu sheep.

关 键 词：酵母培养物 湖羊 生长性能 表观消化率 

分 类 号：S826.9[农业科学—畜牧学]