Effects of different starter cultures on quality of cassava stems and leaves silage
The effects of different starter cultures on the quality of cassava stems and leaves silage were studied.The experiment was divided into control group(CK group)and three treatment groups(A group,B group,and C group).No starter was added in CK group,and 0.02％starter culture A,starter culture B,and starter culture C were added to the raw materials of cassava stems and leaves in three treatment groups,with three replicates in each group.Samples were collected and analyzed after 90 days of fermentation.The results showed that the contents of dry matter,Ca,and P in each treatment group had no obvious change with those in CK group.The contentrations of crude protein,crude fat,and crude ash in the C group were the highest,which were 8.06％,17.84％,and 2.01％higher than those in the CK group.The lignin content in the A group was the lowest,which was 14.43％lower than that in the CK group.The contentrations of neutral detergent fiber(NDF),acid detergent fiber(ADF),and soluble carbohydrate(WSC)in the C group were the lowest,which were 11.40％,16.62％,and 14.96％lower than those in the CK group,respectively.All feeding value indexes of each treatment group were higher than those of CK group,and all the feeding value indexes of C group were the highest.The values of pH,ammonia nitrogen,butyric acid,and ammonia nitrogen/total nitrogen in the B group were the lowest,which were 8.88％,20.90％,99.48％,and 26.82％lower than those in the CK group,respectively.The lactic acid content in the C group was the highest,which was 26.03％higher than that in the CK group.The content of acetic acid in the A group was the lowest,which was 5.85％lower than that in the CK group.According to the comprehensive score of fermentation quality,the scores of each treatment group were higher than those of the CK group.The quality of cassava stalk and leaf silage was compared by average membership function value,and the quality of the B group was the best.The results showed that adding microbial starter culture could improve the silage quality of cassava stems and leaves to a certain extent.
cassava stems and leavesstarter culturesilage qualitynutritional composition
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