添加槐花粉对白三叶青贮发酵品质的影响

采用单因子随机设计，研究添加不同比例的槐(Sophora japonica)花粉对白三叶 (Trifolium repens)青贮发酵品质的影响，以期为槐花应用于青贮饲料生产提供科学依据。分别设置白三叶单独青贮(C)、95%白三叶 + 5%槐花粉青贮(T1)、90%白三叶 + 10%槐花粉青贮(T2)、85%白三叶 + 15%槐花粉青贮(T3)、80%白三叶 + 20%槐花粉青贮(T4)共5个处理。结果表明，白三叶单独青贮品质较差，添加槐花粉提高了青贮原料的干物质、水溶性碳水化合物含量和发酵系数，降低了缓冲能值，使得青贮后的感官评分、乳酸、乳酸 ? 乙酸、干物质、水溶性碳水化合物、粗蛋白质含量显著提高(P ≤ 0.05)，pH、氨氮 ? 总氮、乙酸、丁酸含量显著降低(P ≤ 0.05)。综合考虑，80%白三叶 + 20%槐花粉青贮能获得良好的青贮品质。

Adding Sophora japonica flower powder affects the fermentation quality of Trifolium repens silage

This experiment investigated the effects of adding Sophora japonica flower powder on the fermentation quality of Trifolium repens silage. A single factor random experiment design was used. There were five treatments in total with different mixing levels, including Trifolium repens alone (C), 95% Trifolium repens and 5% S. japonica flower powder (T1), 90% Trifolium repens and 10% S. japonica flower powder (T2), 85% Trifolium repens and 15% S. japonica flower powder (T3), and 80% Trifolium repens and 20% S. japonica flower powder (T4). The results showed that Trifolium repens silage alone had the lowest silage quality, while mixed with S. japonica flower powder increased the dry matter content, water soluble carbohydrates content, and fermentation coefficient, and decreased the buffering capacity of the original materials. After ensiling, the sensory evaluation, lactic acid content, lactic acid ? acetic acid ratio, dry matter content, water soluble carbohydrates content, and crude protein content significantly increased, and the pH value, NH3-N ? TN (total nitrogen) ratio, acetic acid content, and butyric acid content of the silage significantly decreased. Therefore, it was concluded that silage with 80% Trifolium repens and 20% S. japonica flower powder can achieve positive silage quality.