冬闲田种植大麦不同生育期的营养价值和青贮品质

发布时间：2018-03-07 22:15

本文选题：大麦　切入点：生育期　出处：《草业科学》2017年04期 　论文类型：期刊论文

【摘要】：利用冬闲田种植一年生饲草或饲料作物,是解决南方粗饲料不足的有效途径。本研究利用冬闲田种植大麦(Hordeum vulgare),分析其不同刈割期的产量、营养价值和青贮发酵品质。主要研究结果如下,1)大麦的干物质产量随生育期的推进逐渐提高,但乳熟期相对饲用价值和干物质消化率显著高于其它生育期(P0.05),分别为107.19和63.84%。2)随着生育期的推进,全株大麦青贮发酵品质显著提高(P0.05)。3)添加乳酸菌Lactobacillus plantarum CCZZ1可以显著增加各生育期大麦青贮饲料的乳酸含量,降低pH、丁酸和氨态氮含量(P0.05),显著提高青贮发酵品质(P0.05),但开窖后容易引起有氧变质;添加乳酸菌L.parafarraqinis ZH1能有效改善各生育期大麦青贮饲料的有氧稳定性。因此,冬闲田种植大麦宜在乳熟期至蜡熟早期收割青贮,并有益南方畜牧业发展。
[Abstract]:Planting annual forage or fodder crops in winter idle fields is an effective way to solve the shortage of forage in southern China. This study studied the yield of Hordeum vulgarea in winter idle fields, and analyzed the yield of Hordeum vulgarea at different cutting stages. Nutrition value and silage fermentation quality. The main results are as follows: 1) the dry matter yield of barley increases with the development of growth period. However, the relative feeding value and dry matter digestibility in milk stage were significantly higher than those in other growth stages (P 0.05, 107.19 and 63.84.2, respectively). The quality of whole barley silage fermentation was improved significantly (P 0.05N. 3) the content of lactic acid in barley silage was significantly increased by adding lactic acid bacteria Lactobacillus plantarum CCZZ1 to barley silage at different growth stages. Reducing pH, butyric acid and ammonia nitrogen content (P0.05N) could significantly improve the fermentation quality of silage, but it was easy to cause aerobic deterioration after opening the cellar, and adding L.parafarraqinis ZH1 could effectively improve the aerobic stability of barley silage at different growth stages. It is advisable to harvest silage from milking stage to early waxing stage in winter idle field, and it is beneficial to the development of animal husbandry in southern China.
【作者单位】：华南农业大学南方草业中心/广东省草业工程技术研究中心;
【基金】：十二五国家科技支撑计划(2011BAD17B02-05)
【分类号】：S816

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