饲料研究2023，Vol.46Issue(22)：99-105,7.DOI:10.13557/j.cnki.issn1002-2813.2023.22.019
高寒草地不同刈割期栽培燕麦草的营养价值评定
Evaluation of nutrient value of cultivated oat grass at different cutting stages in alpine grassland
摘要
Abstract
The study was to systematically evaluate the nutritional value of annual grasses in the alpine region.Four common species of oat grass(white oat,green oat,Connor oat and Rinna oat)in the plateau region were studied,the general nutrient analysis,gas production in vitro and yield per unit area in different periods were adopted.The results showed that the fresh grass yield of the four species of oat grass reached the peak at the milk stage,and the hay yield reached its peak at the mature stage.The fresh to dry ratio,CP content and EE content of the four oat grass decreased,while the content of ADF and NDF increased with little change in energy.The content of TVFA in the 72 h fermentation broth of four oat grasses decreased with the increase of harvest time,and the content of acetic acid,propionic acid,isobutyric acid and butyric acid was the highest at heading time.The study indicates that oat grass has the highest hay yield at maturity,the highest hay quality at heading,and the highest nutrient output,digestible dry matter and organic matter yield per unit area cut at milk maturity.关键词
燕麦草/产草量/营养价值/刈割期Key words
oat grass/grass yield/nutritional value/cutting period分类
农业科技引用本文复制引用
徐云祥,刘毅,拜彬强,赵鑫盛,苟钰姣,钟荣珍,乔赛毛措,郝力壮..高寒草地不同刈割期栽培燕麦草的营养价值评定[J].饲料研究,2023,46(22):99-105,7.基金项目
国家重点研发子课题(项目编号:2022YFD1302103、2022YFD1602311、2022YFD1602301) （项目编号:2022YFD1302103、2022YFD1602311、2022YFD1602301）
中国科学院西部之光A类项目(1-7) （1-7）
青海省"昆仑英才·高端创新创业人才"拔尖人才项目(郝力壮) （郝力壮）
泽库县科技特派员工作站001号站 （）
