Effects of Mixed Ensiling of Rice with Sorghum-Sudangrass Hybrid on Forage Nutritional Quality and Microbial Community
To investigate the effects of co-ensiling with rice and sorghum-sudangrass hybrid on silage nutritional quality,feeding value,and microbial community,three treatments were established:100%rice silage(R),100%sorghum-sudangrass hybrid silage(SS),and 50%rice mixed with 50%sorghum-sudangrass hybrid silage(R+SS).After 60 days of ensiling,the nutrient content,feeding value,and bacterial community of the silages were analyzed.The results indicated that compared to R treatment,the R+SS treatment significantly reduced the contents of neutral detergent fiber(NDF)and acid detergent fiber(ADF)by 3.10 and 5.35 percentage points,respectively,while increased total digestible nutrients(TDN),net energy for lactation(NEL),digestible dry matter(DDM),and relative feeding value(RFV)by 4.23 percentage points,0.44%,4.10 percentage points and 12.46%,respectively.The analysis results of microbial taxonomy composition and diversity revealed that the R+SS treatment significantly reduced the alpha diversity and increased the relative abundance of Lactobacillus.Redundancy analysis indicated that NDF,CP,and NEL were the primary environmental quality indicators influencing the microbial community composition of mixed rice and sorghum-sudangrass hybrid silage.In conclusion,co-ensiling with rice and sorghum-sudangrass hybrid can enhance the abundance of fermentation-related lactic acid bacteria,thereby effectively improving the nutritional quality and feeding value of rice silage.
RiceSorghum-sudangrass hybridMixed silageForage qualityFeeding valueMicrobial community
万方数据
维普
