Abstract: The purpose of this study was to explore the fermentation quality and in vitro digestion characteristics of tropical garden waste to provide a reference for feed utilization of tropical garden waste. In this study, after 30 days of ensiling, the fermentation quality and in vitro digestion parameters of ten garden plants （Hibiscus rosa-sinensis, Ruellia simplex, Pyrostegia venusta, Jasminum sambac, Cordyline fruticosa, Carmona microphylla, Bauhinia×blakeana） were determined. Among them, the crude protein content of silage of Pyrostegia venusta was the highest at 18.75%, the pH value of Areca triandra silage was the lowest （3.40）, and the in vitro dry matter digestibility （72.44%） and gas production （55.95 mL） of Hibiscus rosa-sinensis were the highest. Based on the nutrient composition, fermentation quality indexes and in vitro fermentation parameters of silages, the feed value of tropical garden wastes was evaluated in the order of Pyrospermum officinale>Hibiscus rosa-sinensis>Murraya exotica>Bauhinia×blakeana>Jasminum sambac>Ruellia simplex>Cordyline fruticosa>Areca triandra>Caryota maxima>Carmona microphylla

Key words: Garden waste, Silage quality, In vitro digestion, Feeding value

摘要： 本研究旨在探究热带园林植物废弃物的青贮发酵品质以及体外消化特征,为热带园林植物废弃物的饲料化利用提供参考。研究测定了朱槿（Hibiscus rosa-sinensis）、蓝花草（Ruellia simplex）、炮仗藤（Pyrostegia venusta）、茉莉花（Jasminum sambac）、朱蕉（Cordyline fruticosa）、基及树（Carmona microphylla）、红花羊蹄甲（Bauhinia×blakeana）、鱼尾葵（Caryota maxima）、三药槟榔（Areca triandra）和九里香（Murraya exotica）十种园林植物青贮30天后的发酵品质和体外消化特征。其中,炮仗藤青贮的粗蛋白含量最高为18.75%,三药槟榔青贮的pH值最低（3.40）,朱槿的体外干物质消化率（72.44%）和产气量（55.95 mL）最高。综合青贮饲料营养成分、发酵品质指标和体外发酵数据评价热带园林植物废弃物的饲用价值次序为炮仗藤>朱槿>九里香>红花羊蹄甲>茉莉花>蓝花草>朱蕉>三药槟榔>鱼尾葵>基及树。

关键词: 园林废弃物, 青贮品质, 体外消化, 饲用价值