饲用甜高粱裹包青贮料对肉羊生产性能及血清指标的影响  

Effects of Packaging Forage Sweet Sorghum Silage on Performance and Serum Indexes of Mutton Sheep

作　　者：张霞[1,2] 付晓悦 王虎成 侯明杰[1,2] 尚占环 ZHANG Xia1,2, FU Xiaoyue1,2,WANG Hucheng1,2,HOU Mingjie1,2,SHANG Zhanhuan3(1. Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, Lanzhou University, Lanzhou 730020, China ; 2. State Key Laboratory of Pastoral Agriculture Ecosystem, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China; 3. College of Life Science, Lanzhou University, Lanzhou 730000, China)

机构地区：[1]兰州大学农业部草牧业创新重点实验室,兰州730020 [2]兰州大学草地农业科技学院,草地农业生态系统国家重点实验室,兰州730020 [3]兰州大学生命科学学院,兰州730000

出　　处：《动物营养学报》2018年第5期1771-1780,共10页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：甘肃省重大科技专项(1502NKDA005-3)

摘　　要：本试验旨在研究饲用甜高粱裹包青贮料对肉羊生产性能及血清指标的影响,以评价饲用甜高粱裹包青贮料对肉羊的饲喂效果。试验选取3~4月龄小尾寒羊[(25.70±1.50)kg]和杜泊羊[(33.40±1.68)kg]母羊各14只作为供试动物,根据饲粮中粗饲料不同将其分为杜泊羊甜高粱青贮组(DG组,n=7)、杜泊羊玉米青贮组(DY组,n=7)、小尾寒羊甜高粱青贮组(HG组,n=7)和小尾寒羊玉米青贮组(HY组,n=7)。饲养试验为期3个月,并于试验第30天、第60天和第90天早晨称重及采集血液。结果表明:1)玉米青贮组(DY组+HY组,n=14)的平均日采食量(ADFI)和平均日增重(ADG)极显著高于甜高粱青贮组(DG组+HG组,n=14)(P<0.01)。2)试验期内杜泊羊组(DG组+DY组,n=14)的血清总抗氧化能力(T-AOC)显著高于小尾寒羊组(HG组+HY组,n=14)(P<0.05);在试验第60天,杜泊羊组血清丙二醛(MDA)含量显著低于小尾寒羊组(P<0.05);在试验第90天,甜高粱青贮组的血清超氧化物歧化酶(SOD)活性显著高于玉米青贮组(P<0.05);在试验第90天,HY组的血清MDA含量显著高于DY组和HG组(P<0.05);甜高粱青贮组的血清SOD活性在试验第60天和第90天显著高于试验第30天(P<0.05)。3)血清尿素氮(UN)含量以及谷丙转氨酶(GPT)、碱性磷酸酶(AKP)活性分别在试验第60天、第90天、第60天存在显著的品种效应(P<0.05);血清β-羟丁酸(BHBA)含量及谷草转氨酶(GOT)、AKP活性分别在试验第90天、第30天与第90天、第60天存在显著的处理效应(P<0.05);HY组的血清GOT和AKP活性在试验第90天显著高于试验第30天(P<0.05)。综上,饲喂含玉米裹包青贮料饲粮的肉羊的生产性能优于饲喂含饲用甜高粱裹包青贮料饲粮的肉羊,但青贮料长期育肥肉羊存在安全风险,而饲用甜高粱裹包青贮料较玉米裹包青贮料有利于提高肉羊肝脏健康、降低"高血脂"及机体酮症酸中毒等疾病的几率,进而降低安全风险。The aim of this study was to investigate the effects of packaging forage sweet sorghum silage on growth performance and serum indexes of mutton sheep,in order to evaluate the feeding effect of packaging forage sweet sorghum silage for mutton sheep. Fourteen 3-to 4-month-old Dorper female sheep [（ 33. 40 ±1.68） kg] and fourteen 3-to 4-month-old small-tailed Han female sheep [（ 25.70 ± 1.50） kg] as test animals were divided into four groups according to roughage,including Dorper sheep sweet sorghum silage group（ DG group,n = 7）,Dorper sheep corn silage group（ DY group,n = 7）,small-tailed Han sheep sweet sorghum silage group（ HG group,n = 7） and small-tailed Han sheep corn silage group（ HY group,n = 7）. The feeding experiment lasted for 3 months,and the body weight and blood samples were sampled on the morning of the day 30,60 and 90 of experiment. The results showed that： 1） the average daily feed intakes（ ADFI） and average daily gain（ ADG） of corn silage group（ DY group ＋ HY group,n = 14） were significantly higher than those of sweet sorghum silage group（ DG group＋HG group,n = 14）（ P〈0.01）. 2） The serum total antioxidant capacity（ T-AOC） for Dorper sheep group（ DG group＋DY group,n = 14） was significantly higher than that for small-tailed Han sheep during the whole experiment（ P〈0. 05）; on day 60 of experiment,the serum malondialdehyde（ MDA） content for Dorper sheep group was significantly lower than that for small-tailed Han sheep（ P〈0. 05）; on day 90 of experiment,the serum superoxide dismutase（ SOD） activity for sweet sorghum silage group was significantly higher than that of corn silage group（ P〈0.05）; on day 90 of experiment,serum MDA content of HY group was significantly higher than that of DY and HG group（ P〈0.05）; on day 90 of experiment,the serum SOD activity for sweet sorghum silage group was significantly lower than that on day60 and 90 of experiment（ P〈0.05）. 3） The breed effects were significant

关 键 词：饲用甜高粱 玉米 裹包青贮 肉羊 生产性能 血清指标 

分 类 号：S816[农业科学—饲料科学]