中国畜牧兽医2025，Vol.52Issue(11)：5122-5133,12.DOI:10.16431/j.cnki.1671-7236.2025.11.010
不同比例田菁与燕麦干草混合青贮对其品质和体外发酵特性的影响
Effects of Different Proportions of Sesbania cannabina and Oat Hay Mixed Silage on the Quality and in vitro Fermentation Characteristics
摘要
Abstract
[Objective]This experiment aimed to investigate the effect of different proportions of Sesbania cannabina and oat hay mixed silage on the quality and in vitro fermentation characteristics.[Method]A single-factor completely randomized block design was adopted.Sesbania cannabina and oat hay were mixed at fresh weight proportions of 9∶1,8∶2,7∶3,and 6∶4,resulted in 4 treatment groups with 5 replicates per group.After 60 days of fermentation,the sensory quality,nutritional quality,fermentation quality,and in vitro fermentation characteristics were analyzed to determine the optimal mixing proportions of Sesbania cannabina and oat hay for mixed silage.[Result]①The color and odor of Sesbania cannabina and oat hay mixed silage improved with increasing oat hay proportion.The 7∶3 group achieved the highest sensory score(16.50).②After 60 days of fermentation,the neutral detergent fiber(NDF)content of mixed silage in 8∶2 group was significantly higher than that in 7∶3 and 6∶4 groups(P＜0.05).Meanwhile,the NDF content in 7∶3 and 6∶4 groups decreased by 5.83％and 4.63％compared with pre-fermentation levels,respectively.The acid detergent fiber(ADF)content in 9∶1 and 8∶2 groups were extremely significantly higher than that in 7∶3 and 6∶4 groups(P＜0.01).Compared with pre-fermentation,the ADF content of each group decreased by 4.03％(9∶1),4.08％(8∶2),8.00％(7∶3),and 6.58％(6∶4),respectively.③After 60 days of fermentation,pH of mixed silage in 7∶3 group was extremely significantly or significantly lower than that of the other three groups(P＜0.01 or P＜0.05),the lactic acid(LA)content was extremely significantly or significantly higher than that of the other three groups(P＜0.01 or P＜0.05).The V-scores of mixed silage in 7∶3 and 6∶4 groups were 83.5 and 86.5,respectively,both graded as excellent.④Rumen in vitro fermentation showed,the gas production of mixed silage in 7∶3 group was higher than that of the other three groups in each time period.⑤With the increase of the proportion of oat hay,the pH of rumen fluid after in vitro fermentation showed a significant linear change(P＜0.05),total volatile fatty acids and acetic acid showed a significant quadratic change(P＜0.05),and propionic acid showed an extremely significant quadratic change(P＜0.01).⑥The dry matter degradation rates(DMD)of 7∶3 and 6∶4 groups were extremely significantly higher than that of 9∶1 group(P＜0.01),the neutral detergent fiber degradation rate(NDFD)and acid detergent fiber degradation rate(ADFD)of 9∶1 group were significantly or extremely significantly lower that of other three groups(P＜0.05 or P＜0.01).With the increase of the proportion of oat hay,the degradation rate of all nutrients showed an upward trend,except for crude protein degradation rate(CPD),which showed a downward trend.[Conclusion]Under the conditions of this experiment,with the increasing proportion of oat hay,the sensory evaluation,nutritional quality,and in vitro fermentation characteristics of Sesbania cannabina and oat hay mixed silage were all significantly improved.The mixed silage effect showed the best quality when Sesbania and oat hay were mixed in a proportion of 7∶3.关键词
田菁/燕麦干草/混贮/体外发酵Key words
Sesbania cannabina/oat hay/mixed silage/in vitro fermentation分类
农业科技引用本文复制引用
何可可,唐丁,臧长江,赵连生,杨嘉宇,陈雅坤,梁韵仪,卜登攀,马慧,罗维真,曹晓风,邓娴..不同比例田菁与燕麦干草混合青贮对其品质和体外发酵特性的影响[J].中国畜牧兽医,2025,52(11):5122-5133,12.基金项目
中国农业科学院科技创新工程(ASTIP-IAS-17) （ASTIP-IAS-17）
首农食品集团自立科技项目(SNSPKJ(2022)02) （SNSPKJ(2022）
家畜产业技术体系北京市创新团队项目(BAIC05-2025) （BAIC05-2025）
中国农业科学院北方农牧业技术创新中心项目(BFGJ2023002) （BFGJ2023002）
山东省重点研发计划(2024SFGC0404) （2024SFGC0404）
