草地学报 ›› 2025, Vol. 33 ›› Issue (5): 1677-1685.DOI: 10.11733/j.issn.1007-0435.2025.05.033

• 技术研发 • 上一篇    

不同比例假蒟对王草青贮发酵品质及体外发酵特性的影响

陈桂武1, 农智颜1, 陈娜1, 罗世勇1, 史晓璐1, 李颖涵1, 字学娟1, 李茂2   

  1. 1. 海南大学热带农林学院, 海南 儋州 571737;
    2. 中国热带农业科学院热带作物品种资源研究所, 海南 儋州 571737
  • 收稿日期:2024-12-03 修回日期:2025-01-20 发布日期:2025-05-20
  • 通讯作者: 字学娟,E-mail:zixuejuan@163.com;李茂,E-mail:limaohn@163.com
  • 作者简介:陈桂武(1997-),男,汉族,广东汕头人,硕士研究生,主要从事园林植物利用研究,E-mail:1012042725@qq.com
  • 基金资助:
    中国热带农业科学院基本科研业务费专项(1630032022011);海口市科技计划项目(2023-050);海南省重点研发计划项目(ZDYF2022XDNY193)资助

Effects of Different Proportions of Piper sarmentosum on the Fermentation Quality and In Vitro Fermentation Characteristics of King Grass Silage

CHEN Gui-wu1, NONG Zhi-yan1, CHEN Na1, LUO Shi-yong1, SHI Xiao-lu1, LI Ying-han1, ZI Xue-juan1, LI Mao2   

  1. 1. Institute of Tropical Agriculture and Forestry, Hainan University, Danzhou, Hainan Province 571737, China;
    2. Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan Province 571737, China
  • Received:2024-12-03 Revised:2025-01-20 Published:2025-05-20

摘要: 本试验旨在探究添加药用植物假蒟(Piper sarmentosum)对王草(Pennisetum purpureum×P.americanum)青贮品质和体外发酵的影响,发酵底物为王草,设三组试验,CK(CON,无添加)、F(鲜样添加3%,5%,7%,10%,15%,分别记作F1,F2,F3,F4和F5)、P(粉末添加1%,2%,3%,4%,5%,分别记作P1,P2,P3,P4和P5),重复3次,室温26℃厌氧发酵30天后测定营养成分、发酵品质和海南黑山羊体外瘤胃发酵参数。结果表明:样品pH值均低于4.2,未检出丙酸和丁酸,乳酸和乙酸含量明显提高,其中P5乳酸和乙酸含量最高(P<0.05),P4和P5代谢能含量最高(P<0.05);营养成分以P5干物质和粗蛋白质含量最高(P<0.05)、酸性洗涤纤维含量最低(P<0.05),P4粗脂肪含量最高(P<0.05)、中性洗涤纤维含量最低(P<0.05)。P4和P5营养价值最高(P<0.05),且P4的发酵品质隶属函数评分最高(0.61)。综上,添加假蒟对王草青贮发酵有一定程度的积极影响,推荐添加4%的假蒟粉末进行王草青贮。

关键词: 假蒟, 王草, 营养成分, 发酵品质, 体外产气法

Abstract: This study aimed to investigate the effects of the medicinal plant P.sarmentosum on the silage quality and in vitro fermentation of P.purpureum×P.americanum (king grass). The fermentation substrate was king grass, and three experimental groups were established: CK (CON, no additive), F (fresh sample added at 3%, 5%, 7%, 10%, 15%,F1,F2,F3,F4,F5), and P (powder added at 1%, 2%, 3%, 4%, 5%,P1,P2,P3,P4,P5), with three replicates. The samples were fermented anaerobically at 26℃ for 30 days. After fermentation, the nutritional composition, fermentation quality, and in vitro rumen fermentation parameters of Hainan Black goats were determined. The results indicated that pH of all samples was below 4.2, with no detectable propionic or butyric acid. Lactic acid and acetic acid levels increased significantly, with the highest concentrations of both acids in the P5 group (P<0.05). The highest metabolizable energy content was observed in the P4 and P5 groups (P<0.05). In terms of nutritional composition, the P5 group had the highest dry matter and crude protein content (P<0.05) and the lowest acid detergent fiber content (P<0.05). The P4 group had the highest crude fat content (P<0.05) and the lowest neutral detergent fiber content (P<0.05). The highest nutritional value was observed in the P4 and P5 groups (P<0.05), and the P4 group had the highest fermentation quality score (0.61). In conclusion, the addition of P.sarmentosum positively affected the silage fermentation of king grass, with the best results observed in the addition of 4% P.sarmentosum powder.

Key words: Piper sarmentosum, King grass, Nutritive value, Fermentation quality, In vitro gas production

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