硝酸盐对苜蓿半干青贮品质的影响  

Effect of nitrate on quality of alfalfa haylage

作　　者：张红玉 赵美蓉 孙娟娟[2] 薛艳林 玉柱[4] 白春生[1] Zhang Hongyu;Zhao Meirong;Sun Juanjuan;Xue Yanlin;Yu Zhu;Bai Chunsheng(College of Horticulture,Shenyang Agricultural University,Liaoning Shenyang 110866;Institute of Grassland Research of Chinese Academy of Agricultural Sciences,Inner Mongolia Hohhot 010010;Inner Mongolia Academy of Agriculture and Animal Science,Inner Mongolia Hohhot 010031;College of Grassland Science and Technology,China Agricultural University,Beijing 100193)

机构地区：[1]沈阳农业大学园艺学院,辽宁沈阳110866 [2]中国农业科学院草原研究所,内蒙古呼和浩特010010 [3]内蒙古自治区农牧业科学院,内蒙古呼和浩特010031 [4]中国农业大学草业科学与技术学院,北京100193

出　　处：《现代畜牧兽医》2021年第7期23-27,共5页Modern Journal of Animal Husbandry and Veterinary Medicine

基　　金：国家自然科学基金(31872422);优质青粗饲料资源开发利用示范项目(16200157);国家牧草产业技术体系(CARS-35)。

摘　　要：为探究硝酸盐对苜蓿半干青贮发酵品质和营养成分的影响。试验以半干苜蓿为原料,在干物质含量大于50%的条件下,设置0.10、0.15、0.20 g/kg 3个NaNO_(3)添加量处理组与空白对照组,每组3个重复,青贮270 d后测定发酵品质和营养成分。结果表明,半干苜蓿原料不使用添加剂直接青贮可以获得品质较好的苜蓿青贮饲料;与对照组相比,0.2 g/kg的NaNO_(3)添加量处理对苜蓿半干青贮品质无影响,但具有抑制青贮发酵的作用。研究表明,在安全范围内添加硝酸盐可以抑制发酵,并且有效保留苜蓿半干青贮发酵品质和营养成分。To explore the effect of nitrate on the fermentation quality and nutritional components of alfalfa haylage,semi-dry alfalfa was used as raw material.Under the condition that the dry matter content was greater than 50%,three NaNO_(3) treatment groups and blank control group were set at 0.10,0.15 and 0.20 g/kg,with three replicates in each group.After silage for 270 d,measure the fermentation quality and nutrients.The results showed that the semi-dry alfalfa raw materials could be directly silaged without additives to obtain better quality alfalfa silage.Compared with the control,the addition of 0.2 g/kg NaNO_(3) had no effect on the quality of alfalfa haylage,but it could inhibit the fermentation of alfalfa.The study indicates that adding nitrate within a safe range can inhibit fermentation and effectively retain the fermentation quality and nutrients of alfalfa haylage.

关 键 词：苜蓿 半干青贮 硝酸盐 发酵品质 营养价值 

分 类 号：S816.5[农业科学—饲料科学]