不同添加剂对紫花苜蓿与高丹草混合青贮品质的影响  

Effects of different additives on silage quality of mixed silage of alfalfa and sorghum-sudangrass hybrid

作　　者：徐艳霞 孙芳[2] 王若丁 杨曌 王晓龙 柴华 李莎莎 吴玥 XU Yanxia;SUN Fang;WANG Ruoding;YANG Zhao;WANG Xiaolong;CHAI Hua;LI Shasha;WU Yue

机构地区：[1]黑龙江省农业科学院畜牧兽医分院,黑龙江齐齐哈尔161005 [2]黑龙江省农业科学院畜牧研究所,黑龙江哈尔滨150086

出　　处：《饲料研究》2025年第2期150-154,共5页Feed Research

基　　金：黑龙江省肉牛协同创新推广体系(项目编号:黑农厅函【2021】1492号);黑龙江省中国科学院草田轮作科学家工作室(项目编号:202004);黑龙江省省属科研院所科研业务费项目(项目编号:CZKYF2024-1-B015)。

摘　　要：试验旨在研究不同添加剂对紫花苜蓿与高丹草混合青贮品质的影响。将紫花苜蓿和高丹草以1∶1混合青贮,设置5组,每组3个重复。对照组(CK组)无添加剂,T1组、T2组、T3组、T4组分别添加0.5%乙酸、0.5%丙酸、0.5%丙酸+0.5%尿素混合试剂、0.001 7%乳酸菌菌剂。结果表明,T3组的青贮饲料干物质、粗蛋白、乳酸、粗灰分、钾、磷含量均显著高于其他组(P<0.05),酸性洗涤纤维和中性洗涤纤维的含量显著低于其他组(P<0.05)。T3组的V-Score评分结果为良好,综合价值评价排名第一。研究表明,紫花苜蓿和高丹草混合青贮时添加0.5%丙酸+0.5%尿素,青贮品质较好。The experiment aimed to study the effects of different additives on the silage quality of mixed silage of alfalfa and sorghum-sudangrass hybrid.The alfalfa and sorghum-sudangrass hybrid were mixed in a 1∶1 ratio for ensiling,with five groups set up,each group with three replicates.The control group(CK group)had no additives,while groups T1,T2,T3,and T4 were treated with 0.5%acetic acid,0.5%propionic acid,a mixture of 0.5%propionic acid and 0.5%urea,and 0.0017%lactic acid bacteria preparation,respectively.The results showed that the silage dry matter,crude protein,lactic acid,crude ash,potassium,and phosphorus concentrations of group T3 were significantly higher than those of other groups(P<0.05),while the concentrations of acid detergent fiber and neutral detergent fiber were significantly lower than those of other groups(P<0.05).The V-Score evaluation result of group T3 was good,and the comprehensive value ranking was the first.The study indicates that adding the mixture of 0.5%propionic acid and 0.5%urea has the better effect on the mixed silage quality of alfalfa and sorghum-sudangrass hybrid.

关 键 词：紫花苜蓿 高丹草 混合青贮 添加剂 

分 类 号：S816.6[农业科学—饲料科学]