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Effects of different levels of molasses on oat silage

ZHAO Liang-liang,DONG Kuan-hu,ZHANG Rui-zhong(College of Animal Sciences and Technology,Shanxi Agricultural University,Taigu 030801,China)  
Forage oat 066 was used to make silage at milk ripe stage and molasses was added with 0%,2% and 4% at dry matter base,respectively.Sampling was conducted at 20,30,40 and 50 days after ensilage,the effects of molasses,ensilage time and moisture on silage quality were studied.The results indicated that the pH value of low moisture silage was significantly(P0.05) lower than high moisture silage.As increase of molasses,pH value reduced and the content of lactic acid was interrelated to pH value.The content of crude protein(CP) and neutral detergent fiber(NDF) in the control group L(2%)(low moisture silage with 2% cane molasses adding) and L(4%)(low moisture silage with 4% cane molasses adding) were significantly(P0.05) higher than others as well as the content of acid detergent fiber(ADF) was significantly(P0.05) lower than others.But no significant difference between the two groups was found.During the oat ensiling,there were also activities of unfavorable microorganisms even pH value lower than 4.2 when moisture was high(80%).It could be concluded that high quality silage could be obtained while the oat was harvested at milk ripe stage and ensiled with 2% of molasses,and the moisture content was reduced to arround 70%.
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