Effects of different additives on fermentation quality and microbial diversity of Pennisetum purpureum silage
CHE Jianmei
WANG Jieping
ZHENG Xuefang
CHEN Yanping
LAN Jianglin
LIU Bo
Abstract：The experiment aimed to explore the effects of different additives on the silage quality and microbial diversity of Pennisetum purpureum.Six treatment groups were set up for the experiment,with three repetitions per group.The control group(CK group)was treated with an equal amount of sterile water,while the experimental group was treated with 0.4％Bacillus cereus FJAT16537(FJAT16537 group),Brevibacillus laterosporus FJAT26384(FJAT26384 group),Micrococcus luteus FJAT25102(FJAT25102 group),Brevibacillus brevis FJAT8672(FJAT8672 group),and 0.4％Pennisetum purpureum juice FJATGW(FJATGW group)mixed silage of Pennisetum purpureum.Silage for 20 days.The results showed that the crude protein content of FJATGW group was significantly higher than that of control group(P＜0.05).The coarse fiber and neutral detergent fiber in FJAT25102 and FJAT8672 groups were significantly lower than that of control group(P＜0.05).The content of acid detergent fiber in FJAT25102 group was significantly lower than that of control group(P＜0.05).The content of acetic acid in FJAT16537,FJATGW,FJAT25102 and FJAT8672 groups was significantly increased(P＜0.05).The content of butyric acid in FJAT26384 group was significantly decreased(P＜0.05).The concentrations of isobutyric acid,isovalerate and isovalerate in FJATGW group were significantly increased(P＜0.05).The content of propionic acid in FJAT8672 group was significantly increased(P＜0.05).The dominant bacterial genus of Pennisetum ginanteum silage were Lactobacillus and Weissiella.The relative abundance of Lactobacillus in FJAT25102 and FJATGW groups was lower than that in control group,while the relative abundance of Weissiella in FJAT16537 and FJAT25102 groups was higher than that in control group.The dominant fungal genus of Pennisetum ginanteum silage was Candida.Combined with membership function analysis showed that the comprehensive nutritional value of Pennisetum purpureum silage with different additives was as follows:FJAT25102 group,FJATGW group,FJAT8672 group,FJAT16537 group,FJAT26384 group,CK group,from high to low.The results showed that the comprehensive nutritional value and silage effect of Pennisetum purpureum silage with 0.4％Micrococcus luteus added are better.
Keywords：Pennisetum purpureumsilagefermentationmicrobial diversity
Publication Date：2025-05-16
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 118-123 )