不同类型饲用高粱属作物营养价值比较  

Comparison of nutritional value of different types of forage sorghum crops

作　　者：张一为 王鸿英 王显国[2] 孟庆江 王振国[3] 曹学浩 郑桂亮 孙志强 ZHANG Yi-wei;WANG Hong-ying;WANG Xian-guo;MENG Qing-jiang;WANG Zhen-guo;CAO Xue-hao;ZHENG Gui-liang;SUN Zhi-qiang

机构地区：[1]天津市农业发展服务中心,天津300061 [2]中国农业大学草业科学与技术学院,北京100193 [3]通辽市农业科学研究院,内蒙古通辽028015

出　　处：《饲料研究》2020年第10期101-104,共4页Feed Research

基　　金：农业农村部“948”项目(项目编号:2015-Z29);农业农村部政府购买服务项目(项目编号:16200157);天津市奶牛产业技术体系创新团队(项目编号:ITTCRS2017004);国家谷子高粱产业技术体系(项目编号:CARS-06-13.5-B14)。

摘　　要：在天津地区,以13个饲用高粱属作物为研究对象,将其划分为4种类型(饲用甜高粱、苏丹草、高丹草、饲草高粱)。利用近红外光谱(NIRS)技术对比其营养价值。结果表明:4种高粱属作物的粗蛋白(CP)和木质素含量无显著差异(P>0.05)。饲草高粱的中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和灰分含量均显著低于苏丹草(P<0.05)。苏丹草的醇溶糖(ESC)和淀粉含量显著低于其他3种类型的饲用高粱属作物(P<0.05)。饲草高粱的相对饲喂价值(RFV)、总可消化养分(TDN)、泌乳净能(NE_L)、维持净能(NE_m)、生长净能(NE_g)均较高。不同类型饲用高粱属作物K、Ca、Mg含量存在不同程度的差异性。其中,苏丹草的4种矿物质元素的总含量较高。综上,在引进和利用饲用高粱属作物时,应充分考虑到不同饲用高粱属作物的营养价值的差异性,选择合适的类型及品种、适宜的收获时期和合理的利用方式。13 forage sorghum crops varieties were studied in Tianjin,and divided them into four types.NIRS technology was used to compare their nutritional quality.The results showed that there were no significant difference in CP and lignin contents among four types of forage sorghum crops(P>0.05).The contents of NDF,ADF and Ash in forage sorghum were significantly lower than those in Sudangrass(P<0.05).The contents of ESC and starch in Sudangrass were significantly lower than those in other three types of forage sorghum(P<0.05).The RFV,TDN,NEL,NEm and NEg of forage sorghum were the highest.There were different of K,Ca,Mg in different types of forage sorghum crops.The total content of four mineral elements in Sudangrass was the highest.Therefore,introduction and utilization of forage sorghum crops should fully consider the difference of nutritional value of different forage sorghum crops,and select the appropriate varieties and types,the appropriate harvest time and reasonable utilization mode.

关 键 词：饲用高粱属作物 近红外光谱 营养品质 矿物质元素 

分 类 号：S816[农业科学—饲料科学]