饲料研究2024，Vol.47Issue(20)：115-118,4.DOI:10.13557/j.cnki.issn1002-2813.2024.20.021
复合有机酸对杂交狼尾草青贮品质、有氧稳定性及微生物数量的影响
Effects of composite organic acids on silage quality,aerobic stability,and microbial population of hybrid Pennisetum alopecuroides(L.)Spreng
摘要
Abstract
The experiment aimed to explore the effects of different ratios of composite organic acids on the silage quality,aerobic stability,and microbial population of hybrid Pennisetum alopecuroides(L.)Spreng.The experiment was divided into four groups,with five replicates in each group.The addition amounts of compound organic acids in control group and experimental groups were 0,0.5％,1.0％and 2.0％,respectively.The silage was stored for 60 days.The results showed that compared with the control group,the dry matter,crude protein,soluble carbohydrate content,and relative feeding value of the 1.0％composite organic acid group were significantly increased(P＜0.05),the content of neutral detergent fiber was significantly reduced(P＜0.05),the acid detergent fiber content of the 1.0％and 2.0％composite organic acid groups was significantly reduced(P＜0.05),and the ash content of the 0.5％and 1.0％composite organic acid groups was significantly reduced(P＜0.05).The pH value and the ratio of ammonia nitrogen to total nitrogen of the 1.0％and 2.0％composite organic acid groups were significantly reduced(P＜0.05),the lactic acid content of the 1.0％composite organic acid group was significantly increased(P＜0.05),the acetic acid content of the 0.5％composite organic acid group was significantly increased(P＜0.05),the acetic acid content of the 1.0％and 2.0％composite organic acid groups was significantly reduced(P＜0.05),and the propionic acid content of the 1.0％composite organic acid group was significantly increased(P＜0.05),and the butyric acid content of the 0.5％,1.0％,and 2.0％composite organic acid groups was significantly reduced(P＜0.05).Compared with the control group,the aerobic stability and lactic acid bacteria count of the 0.5％and 1.0％composite organic acid groups were significantly increased(P＜0.05),the yeast count of the 1.0％and 2.0％composite organic acid groups was significantly reduced(P＜0.05),and the aerobic bacteria count of the 0.5％,1.0％,and 2.0％composite organic acid groups was significantly reduced(P＜0.05).The study shows that adding composite organic acids during the silage process can improve the nutritional value and fermentation quality of hybrid Pennisetum alopecuroides(L.)Spreng,with the 1.0％composite organic acid group showing the best results.关键词
复合有机酸/狼尾草/营养成分/发酵品质/有氧稳定性/微生物数量Key words
composite organic acid/Pennisetum alopecuroides(L.)Spreng/nutrient composition/fermentation quality/aerobic stability/microbial population分类
农业科技引用本文复制引用
王萍,韦带莲,刘媛..复合有机酸对杂交狼尾草青贮品质、有氧稳定性及微生物数量的影响[J].饲料研究,2024,47(20):115-118,4.基金项目
江西省教育厅科学技术研究项目(项目编号:GJJ2207003) （项目编号:GJJ2207003）
