天津农业科学2025，Vol.31Issue(2)：23-26,30,5.DOI:10.3969/j.issn.1006-6500.2025.02.005
冬闲田饲用小黑麦不同生育期营养价值和青贮品质比较
Nutritional Value of Winter Fallow Field Fed Rye at Different Growth Stages Comparison with Silage Quality
摘要
Abstract
To investigate the changes in primary nutritional values and silage fermentation quality of forage triticale variety Jisi No.3 during different growth stages in Tianjin,samples were collected at heading,flowering,filling,and milk-ripe stages.The contents of major nutrients and fermentation quality in both hay and silage were analyzed.The results indicated that during the heading stage,the crude protein content of Jisi No.3 hay reached the highest value of 13.70％,which had been significantly higher than other stages.The contents of acid detergent fiber(ADF)and neutral detergent fiber(NDF)were the lowest at heading stage,while the 30-hour NDF digestibility at this stage had been significantly higher than other periods.The starch content peaked at 9.60％during the milk-ripe stage,and the total digestible nutrients(TDN)reached the maximum of 60.40％at the same stage.Non-structural carbohydrates showed an increasing trend.The ash,calcium,and phosphorus contents at heading stage had been significantly higher than other stages.After ensiling,the crude protein content at heading stage reached the highest value of 16.07％.The ADF and NDF contents during flowering,filling,and milk-ripe stages were all significantly higher than those at heading stage.The 30-hour NDF digestibility at heading stage remained the highest.The crude fat content peaked at 3.26％during heading stage,while the TDN reached the max-imum of 58.53％at milk-ripe stage.The relative forage quality(RFQ)value at heading stage reached 110.33,which was the highest.The ash,calcium,and phosphorus contents at heading stage were also the highest.Lactic acid content ranged from 2.01％to 3.29％,and pH values ranged from 4.50 to 4.91,both peaking at heading stage.In conclusion,when utilizing winter fallow fields in Tianjin to cultivate Jisi No.3 forage triticale,hay should be harvested at heading stage,while silage should be prepared during flowering to fill-ing stages.关键词
饲用小黑麦/生育期/营养价值/青贮品质Key words
forage rye/reproductive period/nutritive value/silage quality分类
农业科技引用本文复制引用
张一为,郭爽,张盛南,王璐瑶,邵丽玮,王鸿英..冬闲田饲用小黑麦不同生育期营养价值和青贮品质比较[J].天津农业科学,2025,31(2):23-26,30,5.基金项目
2024年天津市农业发展服务中心种业科技创新项目(编号ZXKJ202406) （编号ZXKJ202406）
天津市奶牛(肉羊)现代农业产业技术体系创新团队(ITTCRS2021000) （肉羊）
