饲用油菜与饲用玉米秸秆在西藏日喀则的混合青贮营养品质研究  

Study on Nutritional Quality of Mixed Silage of Feed Rape and Feed Corn Straw in Tibet Shigatse

作　　者：徐长虹 张晓强 马斌 拉巴仓决 王丽娟 蒋娇娇 XU Changhong;ZHANG Xiaoqiang;MA Bin;Labacangjue;WANG Lijuan;JIANG Jiaojiao(Agricultural and Animal Husbandry Science Research and Promotion Center,Shigatse City,Xizang Autonomous Region,Tibet Shigatse 857000,China)

机构地区：[1]西藏自治区日喀则市农牧业科学研究推广中心,西藏日喀则857000

出　　处：《西藏农业科技》2024年第3期34-36,共3页Tibet Journal of Agricultural Sciences

基　　金：西藏自治区自然科学基金项目(XZ202101ZR0035G)。

摘　　要：以花角期刈割饲用油菜与开花吐丝期饲用玉米秸秆为原料,按照比例10∶0、7∶3、6∶4、5∶5、4∶6、3∶7、0∶10混合青贮,在分别发酵20 d,40 d,60 d时,对其营养成分进行检测分析,探讨二者在西藏日喀则市自然温度条件下混贮的适宜配比。结果表明:饲用油菜单贮DM含量较低,饲用玉米秸秆单贮营养品质较差,均不宜单独调制青贮饲料;混合处理后粗蛋白(CP)、粗脂肪(EE)、粗灰分(Ash)含量均介于饲用油菜单贮(G1组)与饲用玉米秸秆单贮(G7组)之间,营养品质均得到一定改善;当饲用油菜与饲用玉米秸秆7∶3混贮时,CP与EE含量高于其他混贮处理,ADF、NDF含量与pH值为最低。通过营养品质比较分析,混贮处理7∶3(G2组)营养品质较好,可作为西藏自治区日喀则市饲用油菜与饲用玉米同一时间段种植后混合青贮处理的适宜配比方案。Using forage rape for cutting at anthesis and corn straw for feeding at flowering and silking stage as raw materials,the mixed silage was made in the proportion of 10∶0,7∶3,6∶4,5∶5,4∶6,3∶7,and 0:10.The nutrient composition of the silage was detected and analyzed after fermentation for 20 d,40 d,and 60 d,respectively,to explore the appropriate ratio of the two silages under natural temperature conditions in Rigaze,Xizang.The results showed that the DM content of single storage rapeseed was low,and the nutritional quality of single storage corn straw was poor,both of them were not suitable to separately prepare silage feed.After mixed treatment,the content of crude protein(CP),crude fat(EE),and crude ash(Ash)were all between feed rapeseed single storage(G1 group)and feed corn straw single storage(G7 group),and the nutritional quality was improved to a certain extent.When rapeseed and corn straw were mixed in a ratio of 7∶3,the CP and EE contents were higher than other mixed storage treatments,while the ADF,NDF content,and pH value were the lowest.Through comparative analysis of nutritional quality,the nutritional quality of mixed storage treatment at 7∶3(G2 group)was better,which could be used as the appropriate proportion scheme for mixed silage treatment after planting forage rape and forage corn at the same time in Shigatse City,Xizang Autonomous Region.

关 键 词：饲用油菜 饲用玉米秸秆 混贮 营养品质 

分 类 号：S548[农业科学—作物学]