稻草与不同饲料混合在体外消化率上的组合效应研究  

In vitro dry matter digestibility of mixtures of rice straw and several feeds

作　　者：张吉鹍[1] 包赛娜[2] 李龙瑞[3] 

机构地区：[1]江西省农业科学院动物种质资源创新与营养调控重点实验室,江西南昌330200 [2]内蒙古农牧业科学院动物营养研究所,内蒙古呼和浩特010030 [3]华南农业大学兽医学院,广东广州510642

出　　处：《草业科学》2010年第11期137-144,共8页Pratacultural Science

基　　金：江西自然科学基金资助项目(2008GZN0007);江西省农业科学院科技创新及成果转化基金

摘　　要：以体外干物质消化率(IVDMD)对鲁梅克斯K-1(Rumex patientia,RP)、紫云英(Astragalus sinicus,AS)、高丹草(Sorghum hybrid Sudangrass,SHS)、苏丹草(Sorghumsudanense,SS)、矮象草(Pennisetumpurputeumcv.mott,PPM)、苜蓿(Medicagosativa,MS)、木薯干草(CH)、稻草(RS)、氨化稻草(ARS)与木薯渣(CR)的品质进行了评定。IVDMD(%)自高到低的排序为:CR(77.63)、RP(61.32)、MS(55.26)、AS(54.91)、CH(52.97)、SHS(40.24)、PPM(38.70)、ARS(36.88)、SS(34.15)、RS(26.63)。除AS与MS外,各种饲料间的IVDMD差异显著(P<0.05)。本研究将组合效应值(AE)定义为混合饲料实测IVDMD与各单个饲料IVDMD加权和值之差。分别以RS、ARS作为低、中等品质基础秸秆饲料,再分别添补RP、AS、SHS、SS、PPM、MS与CH(RS还补饲ARS),共6个组合。结果表明,任一组合均观察到正组合效应,以添补MS的最大;CH作为添补料其效果要好于禾本科牧草,与豆科牧草相似;对低质秸秆基础饲料的补饲较对中等品质的组合效应明显。In vitro dry matter digestibility（IVDMD） was used to estimate the quality of Rumex patientia（RP）,Astragalus sinicus（AS）,Sorghum hybrid Sudangrass（SHS）,S.sudanense（SS）,Pennisetum purputeum cv.mott（PPM）,Medicago sativa（MS）,cassoa hay（CH）,rice hay（RS）,ammoniated rice hay（ARS） and cassava residues（%,DM）,and IVDMD was in order： CR（77.6）RP（61.32）MS（55.26）AS（54.91）MS（52.97）SHS（40.24）PPM（38.70）ARS（36.88）SS（34.15）RS（26.63）.Except for AS and MS,IVDMD was significant difference（P0.05） among other feeds.Associative effectiveness（AE） was defined as the difference between the measured IVDMD of mixtures and the weight sum of the individual feeds.Six mixtures（60%RS＋10%CR＋30X1,X1 was RP,AS,SHS,SS,PPM,MS,CH and ARS;60%ARS＋0.1%CR＋0.3%X2,X2 was RP,AS,SHS,SS,PPM,MS and CH;60%ARS＋20%SS＋20%X3,X3 was RP,AS,SHS,SS,PPM,MS and CH;50%ARS＋20%SS＋30%X4,X4 was the same as X3;60%RS＋20%SS＋20%X5,X5 was RP,AS,SHS,PPM,MS,CH,ARS and CR;50%RS＋20%SS＋30%X6,X6 was the same as X5） were used to measure the associative effect AE.Positive AE were observed for all mixtures（P0.05） and addition of MS was the best.CH was a good supplement because its effectiveness was better than grasses and early equaled to legumes.Supplement for RS was better than that for ARS.

关 键 词：稻草 添补 牧草 体外干物质消化率 组合效应 

分 类 号：S816.32[农业科学—饲料科学]