摘要
试验旨在探究功能性乡土草南鹤虱(Carotae fructus)在畜牧生产中应用的可能性,研究南鹤虱添加比例对牧草体外消化特征的影响.采用单因素完全随机设计,分别在老芒麦(Elymus sibiricus)、扁穗冰草(Agropyron cristatum)、垂穗披碱草(Elymus nutans)和紫花苜蓿(Medicago sativa)地上混合牧草中添加0、4%、8%和12%的南鹤虱.结果显示,发酵72 h时,与未添加南鹤虱组相比,添加4%南鹤虱的老芒麦干物质消化率(IVDMD)提高了19.92%(P<0.05);与未添加南鹤虱组相比,添加8%南鹤虱的扁穗冰草、垂穗披碱草以及紫花苜蓿IVDMD分别提高了16.76%、16.35%和1.83%(P<0.05).研究表明,功能性乡土草南鹤虱可以作为反刍动物粗饲料使用,当添加剂量为4%～8%时,可以提高反刍动物的消化率.
Abstract
The experiment aimed to explore the potential application of the functional indigenous grass Carotae fructus in livestock production,investigate the influence of inclusion ratios of Carotae fructus on the in vitro digestive characteristics of pasture.A single-factor completely randomized design was employed,with Carotae fructus added at proportions of 0,4%,8%,and 12%to four types of aboveground mixed pasture:Elymus sibiricus,Agropyron cristatum,Elymus nutans,and Medicago sativa.The results showed that after 72 h of fermentation,compared to the group without Carotae fructus,the addition of 4%Carotae fructus increased the IVDMD of Elymus sibiricus by 19.92%(P<0.05).Compared to the group without Carotae fructus,the addition of 8%Carotae fructus increased the IVDMD of Agropyron cristatum,Elymus nutans,and Medicago sativa by 16.76%,16.35%,and 1.83%,respectively(P<0.05).The study indicates that Carotae fructus,as a functional indigenous grass,can be used as a roughage for ruminants,improving the digestibility when added at a dosage of 4%to 8%.
基金项目
河北省林业和草原科技推广示范项目(冀LT[2021]001号)
河北省重点研发计划项目(22327508D)
河北省草产业技术体系饲草资源开发岗创新团队项目(HBCT2023160202)
维普
万方数据