草业学报2018，Vol.27Issue(4)：162-169,8.DOI:10.11686/cyxb2017229
添加乳酸菌制剂和麸皮对去穗玉米秸秆青贮质量的影响
Effects of lactic acid bacteria preparation and bran on corn stover silage quality
摘要
Abstract
To elucidate the effect of lactic acid bacteria and bran on the quality of corn stover silage at two treatment times (harvest and harvest+3 days),the effect of three inoculants (Sila-Max,Sila-Mix and bran) on the nutritive value and fermentation parameters of ensiled corn stover was studied using 20 L self-made mini-silos for 45 d under ambient environmental conditions.The results demonstrated that all treatments made good quality corn silage in the mini-silos.In the uninoculated group,delaying ensiling time by 3 d significantly (P＜0.05) increased the acetic acid,ammonia nitrogen,crude protein,acid detergent fiber,lignin,calcium and dry matter loss by 22.05％,50.00％,10.34％,5.19％,10.92％,20.51 ％ and 48.37％,respectively,while decreasing dry matter content by 7.37％.For the harvest time treatment,Sila-Max+bran significantly (P＜ 0.05) increased lactic acid,ether extract and crude protein by 22.98％,12.46％ and 5.57％,respectively,while decreasing dry matter loss by 39.27％;Sila-Max significantly (P ＜ 0.05) increased dry matter by 6.41％,decreased dry matter loss by 45.80％,and bran decreased crude protein by 9.17％.For the 3 d delayed ensiling,Sila-Max significantly (P＜0.05) increased the acetic acid and lignin by 10.94％ and 9.14％,respectively,decreased ether extract by 11.29％,while bran increased acetic acid by 10.94％ and decreased ether extract by 11.29 ％.Sila-Max+ bran significantly (P＜0.05) increased acetic acid,lignin and dry matter by 9.67％,12.13％ and 6.23％,respectively,while decreasing ether extract and dry matter loss by 15.81％ and 26.73％.All treatments were similar (P＞0.05) for 48 h in vitro dry matter digestibility.In conclusion,delayed ensiling decreased dry matter and fermentation quality,enhance aerobic fermentation,increase dry matter loss.Sila-Max+bran enhanced corn silage fermentation quality and decrease nutrient loss when ensiled immediately but had no effect on fermentation quality when ensiling was delayed by 3 d.关键词
青贮/添加剂/玉米秸秆/装填时间/青贮品质Key words
silage/inoculants/corn stover/ensiling time/silage quality引用本文复制引用
王建福,雷赵民,成述儒,焦婷,李洁,吴建平..添加乳酸菌制剂和麸皮对去穗玉米秸秆青贮质量的影响[J].草业学报,2018,27(4):162-169,8.基金项目
农业部公益性行业科研专项(201503134),兰州市科技局科技计划项目(农业科技攻关 （201503134）
2012-2-159),甘肃省农业生物技术研究与应用开发项目(GNSW.2012-25),农业部公益性行业科研专项(20130305907),甘肃省科技重大专项(143NKDC017),甘肃省科技重大专项(17ZD2NC020)和甘肃省农牧厅秸秆饲料化利用研究专项([2016]269号)资助. （GNSW.2012-25）
