中国奶牛Issue(4)：47-52,6.DOI:10.19305/j.cnki.11-3009/s.2025.04.010
不同生育期食叶草营养物质变化规律及饲用价值分析
Analysis of Nutrient Changes and Feeding Value of Edible Dock at Different Growth Stages
摘要
Abstract
The edible dock is rich in protein,which has high nutritional value and feeding value.In this study,the main nutrient components of edible dock were determined at leaf cluster stage,stem extraction stage and bud emergence stage,and the changes and feeding value of nutrients at different growth periods were analyzed.The results showed that the crude protein content was 28.77%,21.99%and 13.87%,and the ether extract content was 5.16%,2.57%and 1.43%,the crude fiber content was 8.92%,14.94%,37.37%,the carotenoid contents were 36.0mg/100g,29.79mg/100g and 18.85mg/100g,in leaf cluster stage,stem extraction stage and bud stage,respectively.Edible dock contains 17 types of amino acids at different growth stages,including 7 essential amino acids for humans.The content of potassium in minerals is the highest,and the content of copper is the lowest.The potassium content was 6.39%,5.74%and 4.50%,and the copper content was 41.87mg/kg,30.83mg/kg and 8.67mg/kg,in leaf cluster stage,stem extraction stage and bud stage,respectively.However,the contents of tannin and oxalic acid were also high,and the contents of tannin were 10050.27,16305.07 and 48532.18mg/kg,and the oxalic acid were 8449.53,4980.82 and 3800.15mg/kg,in leaf cluster stage,stem extraction stage and bud stage.The contents of various nutrients in edible dock vary with different growth stages.The contents of crude protein,ether extract,carotenoids and amino acids gradually decrease with different growth stages,while the contents of crude fiber,ADF and NDF gradually increase with different growth stages,such as leaf cluster stage,stem-heading stage and budding stage,while the contents of dry matter,crude ash and some mineral elements had no obvious regular change.Therefore,in terms of nutritional value,it belongs to high quality forage and has higher feeding value.However,the high content of tannin and oxalic acid will reduce palatability and utilization of nutrients,which needs to be further solved.关键词
食叶草/营养物质/变化规律/饲用价值Key words
Edible dock/Nutrients/The law of change/Feeding value分类
农业科技引用本文复制引用
刘威,王昊,蔡卫佳,罗桂杰,刘旭..不同生育期食叶草营养物质变化规律及饲用价值分析[J].中国奶牛,2025,(4):47-52,6.基金项目
2023年宿迁市农业科技自主创新资金项目(SQCX202307). （SQCX202307）
