摘要
猪屎豆(Crotalaria pallida Ait)是豆科蝶形花亚科猪屎豆属一年生草本植物,粗蛋白质含量高达30%以上,具有作为动物蛋白饲料的巨大潜力。本研究选择前期经过筛选的15份猪屎豆资源,通过评价生产性能、青贮效果和山羊瘤胃内消化率,旨在进一步筛选出高品质资源并推广应用。选定3块试验田,每块试验田设定15个小区(3m×5 m),将T1~T15分别栽培至小区,待20%开花时进行收割,并测定生产性能,同时取部分样品制备青贮,取半干样品200 g装入一个30 cm×20 cm的聚乙烯青贮袋中,发酵60 d,评价发酵品质。选用4只平均体重16.2 kg单独饲养在代谢笼的海南黑山羊,早上饲喂后2 h,抽取瘤胃液与缓冲液1:2混合后培养青贮前后的猪屎豆,评价其干物质消化率和瘤胃发酵情况。研究结果表明:猪屎豆单一青贮效果不佳,需结合混合青贮或添加促发酵剂来进一步探究其青贮技术。T1(云南玉溪)、T4(海南海口)和T13(海南东方)品种具有较高粗蛋白质含量和较高的干物质消化率,具有作为培育高产高蛋白牧草的潜力。T13具有显著偏高的生物量。综上,本研究中T13(海南东方)品种具有作为新型蛋白饲料资源进一步利用的巨大潜力。
Crotalaria pallida belonging to an annual herb of papilionoideae contains more than 30%crude protein,which has great potential to be an animal protein feed.The aim of the study was to select high-quality crotalaria pallida collected from 15 different sites for further utilization through evaluating the production performance,silage effects and rumen digestibility of Hainan black goats.In the experiment,three fields were selected and each one was divided into 15 plots on average(3 m×5 m).T1~T15 were grown in these plots respectively and harvested at 20%-bloom stage to evaluate their production performance.Meanwhile,some samples were selected to prepare silage.200 g of semi-dry samples was put into a 30 cm×20 cm polyethylene silage bag and fermented for 60 days to evaluate the fermentation quality.4 Hainan black goats raised separately in a metabolic cage with an average body weight of 16.2 kg were used for the experiment.Two hours after feeding the goats in the morning,their rumen fluid and buffer solution were extracted and mixed with 1:2 to culture Crotalaria pallida before and after silage.Then the dry matter digestibility and rumen fermentation of Crotalaria pallida were evaluated.The results showed that the effect of Crotalaria pallida silage was not obvious,therefore,the Crotalaria pallida silage technology should be further explored by combining with mixed silage or adding crude starter culture.T1(Yuxi,Yunnan Province),T4(Haikou,Hainan Province)and T13(Dongfang,Hainan Province)had higher crude protein content and higher dry matter digestibility,which had the potential to be used as high yield forage.In summary,T13(Dongfang,Hainan Province)had the advantage and value to be as new protein feed.
作者
吕仁龙
孙郁婷
王燕茹
张雨书
李茂
周汉林
杨虎彪
LYU Renlong;SUN Yuting;WANG Yanru;ZHANG Yushu;LI Mao;ZHOU Hanlin;YANG Hubiao(Tropical Crops Genetic Resources Institute,Chinese Academy of Tropical Agricultural Sciences,Haikou,Hainan Province 571101,China;Zhanjiang Experimental Station,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang,Guangdong Province 524013,China)
出处
《中国饲料》
北大核心
2024年第5期129-136,共8页
China Feed
基金
海南省重点研发计划(GHYF2022004)
科技基础资源调查专项中国南方草地牧草资源调查(2017FY100600)。
关键词
猪屎豆
生产性能
发酵品质
干物质消化率
资源利用
Crotalaria pallida
production performance
fermentation quality
dry matter digestibility
resource utilization
