期刊
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
卷 24, 期 2, 页码 214-221出版社
ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOC
DOI: 10.5713/ajas.2011.10170
关键词
Cell Wall-degrading Enzymes; Rhodesgrass; Guineagrass; Silage; Digestion; In sacco
资金
- Ministry of Education, Science and Culture of Japan [10760157]
- Grants-in-Aid for Scientific Research [10760157] Funding Source: KAKEN
Effects of the cell wall-degrading enzymes derived from Acremonium cellulolyticus and Trichoderma viride on the silage fermentation and in sacco degradation of tropical grasses i.e. rhodesgrass (Chloris gayana Kunth. cv. Callide) and guineagrass (Panicum maximum Jacq. cv. Natsukaze) were investigated in laboratory-scale experiments. These two grasses were either treated with or without the enzymes before ensiling. Untreated rhodesgrass produced acetate fermentation silage (lactate, 13.0 g kg(-1) DM; acetate, 38.7 g kg(-1) DM) with high final pH value and NH3-N content (5.84 and 215 g kg(-1) DM). Addition of enzymes significantly increased (p<0.01) the lactate production (lactate, 45.6; acetate, 34.0 g kg(-1) DM) and decreased (p<0.01) the pH and NH3-N (4.80 and 154 g kg(-1) DM) in the ensiled forages when compared with the control silages. Untreated guineagrass was successfully preserved with a high lactate proportion (lactate, 45.5; acetate, 24.1 g kg(-1) DM), and the addition of enzymes further enhanced the desirable fermentation (lactate, 57.5 g kg(-1) DM: acetate, 19.4 g kg(-1) DM). The content of NDF was lowered (p<0.05) by enzymes in both silages, but the extent appeared greater in the enzyme-treated rhodesgrass (rhodesgrass, 48 g kg(-1) DM; guineagrass, 21 g kg(-1) DM). Changes in the kinetics of in sacco degradation showed that enzyme treatment increased (p<0.01) the rapidly degradable DM (rhodesgrass, 299 vs. 362 g kg(-1) DM; guineagrass, 324 vs. 343 g kg(-1) DM) but did not influence the potential degradation, lag time and degradation rate of DM and NDF in the two silages.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据