摘要
在刚收获及收获后经6,18和28 h晾晒的初花期苜蓿青贮料中,加入不同糖分、乳酸菌和纤维素酶浓度的乳酸菌复合添加剂进行青贮,并按正交原理设计试验。结果表明,青贮新鲜苜蓿,其pH值呈不断上升趋势,青贮效果不佳。晾晒6,18和28 h之后,苜蓿青贮效果最好的复合添加剂组合分别为纤维素酶(0.1 g/kg)+葡萄糖(15g/kg)、纤维素酶(0.025 g/kg)+葡萄糖(20 g/kg)、乳酸菌(107cfu/g)+葡萄糖(20 g/kg)。随着苜蓿青贮添加组分浓度的增加,其青贮pH值下降更快,青贮料中氨态氮含量逐渐降低,乳酸含量不断增加。
Medicago sativa in the initial floweri ensiled with different water contents （80.3%, ng stage was harvested and wilted for O, 6, 18, or 28 h and was 71.2%, 62. 5% and 40.3% respectively） and additive mixtures. Results from the orthogonal experiments showed that fresh cut M. sativa （water content 80, 3 %） without additives made poor silage. Wilting for 6 h with the addition of 0. 1 g/kg cellulose enzyme and 15 g/kg glucose, wilting for 18 h with the addition of 0.025 g/kg cellulose enzyme and 20 g/kg glucose and wilting for 28 h with the addition of 107 cfu/g lactic acid bacteria and 20 g/kg glucose gave the best results. As the contents of additive components increased, M. sativa silage had lower pH values and ammonium nitrogen contents but higher lactic acid contents.
出处
《草业学报》
CSCD
2007年第2期40-45,共6页
Acta Prataculturae Sinica
基金
"948"项目(2006-G38)资助
关键词
苜蓿
乳酸菌
纤维素酶
葡萄糖
含水量
Medicago sativa
lactic acid bacteria
cellulose enzyme
glucose
water content
