Effects of single and multiple inoculants on Hemarthria compressa silage quality

doi:10.11686/cyxb2018349

Abstract

Abstract: In order to improve the silage quality of Hemarthria compressa in hot and humid areas, three selected lactic acid bacteria strains [Pediococcus pentosaceus (PP04), Weissella cibaria (WC10) and Lactobacillus plantarum (LP694)] were used as single or multiple additives during H. compressa silage preparation. The treatments tested were as follows: 1) PP04 (Pediococcus pentosaceus); 2) WC10 (Weissella cibaria); 3) LP694 (Lactobacillus plantarum); 4) M-1 [PP04 (Pediococcus pentosaceus):WC10 (Weissella cibaria)=2:1]; 5) M-2 [PP04 (Pediococcus pentosaceus):LP694 (Lactobacillus plantarum)=1:2]; 6) M-3 [WC10 (Weissella cibaria):LP694 (Lactobacillus plantarum)=2:1]; 7) M-4 [PP04 (Pediococcus pentosaceus):WC10 (Weissella cibaria):LP694 (Lactobacillus plantarum)=2:1:1]; 8) CK (uninoculated control). The ratio of NH₃-N/TN in the inoculant treated groups was significantly lower than in the control group (P<0.05), while lactic acid bacteria (LAB) treated silages had higher lactic acid content, dry matter content and recovery of dry matter than the uninoculated control (P<0.05). The pH value of all treated groups was less than 4.2, and the lowest pH value (3.86) was observed in the M-4 treatment formulation. Furthermore, the M-4 treatment group had the highest lactic acid content and lowest NH₃-N/TN ratio (P<0.05). Generally, inoculation with one or multiple strains of lactic acid bacteria was beneficial and enhanced the quality of H. compressa silage. The optimal formulation among those tested, for preparing H. compressa silage, was M-4 (PP04:WC10:LP694=2:1:1).

Key words: silage, inoculants, Hemarthria compressa, fermentation quality, nutritional components

LI Xiao-ling, GUAN Hao, SHUAI Yang, LI Xiao-mei, PENG An-qi, LI Chang-hua, PU Qi, YAN Yan-hong, ZHANG Xin-quan. Effects of single and multiple inoculants on Hemarthria compressa silage quality[J]. Acta Prataculturae Sinica, 2019, 28(6): 119-127.

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