复合菌剂浓度对高寒牧区不同品种牧草青贮品质的影响OA

To explore the effect of adding compound microbial inoculants with different concentrations on the silage quality of different gramineous forages,a two-factor experiment was conducted to study the silage quality of rye(A1),oat(A2),and triticale(A3)forages when compound microbial inoculants(Pediococcus aci-dilactici+Lactobacillus plantarum+Lactobacillus buchneri)with concentrations of 0(B1),50(B2),100 μg/mL(B3)and 200 μg/mL(B4)were added respectively.The results showed that there were significant differences in the contents of ether extract(EE),neutral detergent fiber(NDF),acid detergent fiber(ADF),ammonium nitrogen(NH3-N),and dry matter digestibility(DMD)among different forage types(P<0.05),while extremely significant differences were observed in other indicators among different forage types(P<0.01).The concentration of the compound microbial inoculants significantly affected ADF content and DMD(P<0.05),and had a highly significant impact on pH and lactic acid(LA)content(P<0.01),while no significant effects were observed on other indicators(P>0.05).The interaction between forage types and the concentra-tion of the compound microbial inoculants extremely significantly influenced all other indica-tors of silage quality(P<0.01).The results of multi-factor comprehensive evaluation(TOPSIS)indi-cated that triticale had the best fermentation qual-ity when 200 μg/mL compound microbial inocu-lant(B4)was added.In conclusion,triticale should be preferred for silage preparation in the alpine pastoral areas of Gannan,and adding 200 μg/mL compound microbial inoculant is more conducive to improving silage quality.