滚动复制的高湿度大麦的严重程度取决于化特征和体外食者发酵的情况
Beverly A Lynch1, Gabriel O Ribeiro1, Timothy Mutsvangwa1
1Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, SK, S7N 5A8, Canada.
Journal of dairy science
|September 1, 2024
概括
处理复制的高湿度大麦 (RHB) 以更细的滚筒间隙改善了干物和有机物消失. 这种方法可以降低低牛pH值的风险,而不会影响牛饮食中的消化能力.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 料加工 料加工
背景情况:
- 不同的大小的大麦核对一致的加工提出了挑战.
- 复制的高湿度大麦 (RHB) 处理严重性影响保证和反动物发酵.
- 了解加工效应对于优化反动物饮食至关重要.
研究的目的:
- 评估加工严重程度对RHB化特征的影响.
- 评估RHB加工对体外转动物发酵的影响.
- 为了比较RHB加工与干大麦 (DRB).
主要方法:
- 大麦被复制为65%的水分,并使用不同的滚筒间隙宽度 (1.40mm,1.86mm,2.31mm) 进行加工.
- 经过加工的RHB和DRB (对照组) 被 ensiled1个月或5个月.
- 在实验室中,使用RUSITEC系统对类发酵进行了评估.
主要成果:
- 精细加工RHB增加了内核宽度,并线性增加了干物质,有机物质和粉的消失.
- 与DRB相比,RHB的微粒百分比较低.
- 与DRB相比,RHB的发酵器pH往往更高.
结论:
- 使用更细的间隙处理RHB可能会防止发酵器pH值下降.
- 类似的干物质和有机物质的消失得到了RHB在更细的间隙处理.
- 在不影响消化性的情况下,RHB加工可能会降低低牛体pH值的风险.
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