摘要
试验旨在探讨紫花苜蓿(Medicago sativa L.)与无芒雀麦(Bromus inermis)不同混合比例对其青贮营养品质及发酵品质的效果。以紫花苜蓿与无芒雀麦为试验原料,按鲜重质量比10∶0、8∶2、7∶3、6∶4、4∶6、3∶7、2∶8、0∶10混合青贮,每个处理3个重复,贮存60 d后,检验分析感官品质、营养成分及发酵品质,通过V-Score评分系统对发酵品质进行打分,使用灰色关联分析对8组混合青贮的营养品质及发酵品质进行综合评价,确定两种饲草的最佳混合比例。结果显示:紫花苜蓿与无芒雀麦混合比例为6∶4时青贮的效果最佳,pH值和氨态氮(NH_3-N)含量最低,粗蛋白(CP)和乳酸(LA)含量最高,酸性洗涤纤维(ADF)和中性洗涤纤维(NDF)含量最低。研究表明,紫花苜蓿与无芒雀麦混合青贮的效果优于紫花苜蓿与无芒雀麦单贮,混合青贮相比单贮更能够充分发挥各青贮原料的优点,可更好地保存青饲料的营养成分,紫花苜蓿与无芒雀麦的比例为6∶4时混合青贮效果最佳。
The experiment aimed to explore the effects of different mixing ratios of alfalfa(Medicago sativa L.)and Bromus inermis on the nutritional and fermentation qualities of their mixed silage.Alfalfa and Bromus inermis were used as experimental materials and mixed in fresh weight ratios of 10∶0,8∶2,7∶3,6∶4,4∶6,3∶7,2∶8,and 0∶10 for ensiling,with three replicates for each treatment.After 60 days of storage,the sensory quality,nutritional components,and fermentation quality were tested and analyzed.The fermentation quality was scored using the V-Score scoring system,and grey relational analysis was used to comprehensively evaluate the nutritional and fermentation qualities of the eight groups of mixed silages to determine the optimal mixing ratio for the two forage grasses.The results showed that when alfalfa is mixed with Bromus inermis in a ratio of 6∶4 for ensiling,the silage quality was optimal,with the lowest pH value and ammonia nitrogen(NH3-N)content,and the highest levels of crude protein(CP)and lactic acid(LA),as well as the lowest levels of acid detergent fiber(ADF)and neutral detergent fiber(NDF).The study indicates that the mixed ensiling of alfalfa and Bromus inermis was superior to the individual ensiling of alfalfa and Bromus inermis.The mixed silage could better exert the advantages of each ensiling raw material,thus better preserving the nutritional components and fermentation quality of the green feed.A mixing ratio of 6∶4 for alfalfa to Bromus inermis is optimal for mixed ensiling.
作者
乌力塔
陈肃
胡梦洁
涂哈迪
寇文慧
刘洋
张小林
肖燕子
WU Li-ta;CHEN Su;HU Meng-jie;TU Ha-di;KOU Wen-hui;LIU Yang;ZHANG Xiao-lin;XIAO Yan-zi
出处
《饲料研究》
CAS
北大核心
2024年第13期118-123,共6页
Feed Research
基金
内蒙古自治区科技创新引导奖励资金项目(项目编号:2022CXYD006)
呼伦贝尔市科技计划项目(项目编号:NC2023022)。
关键词
紫花苜蓿
无芒雀麦
不同比例
混合青贮
营养品质
发酵品质
alfalfa
Bromus inermis
different proportions
mixed silage
nutritional quality
fermentation quality
