接种植物乳杆菌(Lactobacillus plantarum)对小规模饲料稻青贮品质的影响

【目的】研究接种植物乳杆菌对小规模饲料稻品质的影响。【方法】以自然发酵的样品为对照,接种不同来源植物乳酸菌发酵饲料稻,发酵30 d后对饲料稻的感官进行评价;通过选择性平板对饲料稻青贮中的不同微生物进行计数;并采用V-Score评价法对发酵品质进行评定。【结果】相对自然发酵的样品而言,接种植物乳杆菌的青贮样品感官评分等级达到优良;乳酸菌为优势菌株,引起腐败变质的好氧菌、霉菌、大肠杆菌等受到抑制;接种发酵的样品中乳酸含量明显增加,氨态氮的产生量为对照的1/2左右,V-Score评分为满分。【结论】供试的植物乳杆菌,尤其是从青饲料和青贮材料中分离的菌株能有效改善饲料稻青贮的品质,可考虑用作青贮饲料稻发酵剂。

Effect of inoculating Lactobacillus plantarum on the quality of small-scale forage paddy rice silage

Objective] We evaluated the effect of inoculating Lactobacillus plantarum on the quality of small-scale forage paddy rice silage. Methods] We analyzed the forage paddy rice inoculated with L. plantarum by comparing with the naturally fermented samples in sensory qualities, microflora and fermentation qualities (using V-Score evaluation method). Results] L. plantarum was dominant, and harmful and pathogenic bacteria were inhibited in inoculated samples. Conclusion] Inoculating L. plantarum can improve the qualities of silage, and they can be considered as starter culture for forage paddy rice silage.