在日本生产的干玉米粒和玉米粒料的料特性与进口玉米粒相比
Eiko Touno1, Shin-Ichi Tagawa2, Tomomi Kamizono1
1Tohoku Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Morioka, Japan.
Animal science journal = Nihon chikusan Gakkaiho
|April 3, 2024
概括
玉米粒的可降解性因来源和加工而异. 高湿度的玉米料表现出比干玉米粒更大的现场干物质和原始蛋白质可降解性,影响乳牛料选择.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 农业科学 农业科学
背景情况:
- 玉米谷物是乳牛的主要料.
- 玉米谷物加工的变化 (高湿度灌 vs 干燥) 和地理原产地可以影响其营养价值.
- 了解牛的可降解性对于优化奶牛的料效率至关重要.
研究的目的:
- 为了比较日本和进口玉米粒的in situ干物质降解性 (ISDMD) 和in situ原蛋白降解性 (ISCPD).
- 为了评估加工 (高湿度料与干燥) 对玉米谷物的可降解性的影响.
- 为乳牛提供信息化的料配方提供数据.
主要方法:
- 在高湿度玉米谷物料 (JHC) 和来自日本的干玉米谷物 (JDC) 上进行了现场可降解性测试.
- 还分析了从美国 (USC),巴西 (BRC) 和南非 (SAC) 进口的玉米粒.
- ISDMD和ISCPD的测量采用了已知的皮化技术.
主要成果:
- 在玉米谷物来源和加工方法之间,ISDMD差异很大.
- 与日本干玉米粒 (JDC) 相比,日本高湿度玉米料 (JHC) 呈现出更高的ISDMD和ISCPD.
- 进口的玉米粒 (USC,BRC,SAC) 显示了中间的ISDMD值,其中BRC的ISDMD值低于USC和SAC.
结论:
- 玉米的谷物来源和加工显著影响食者的可降解性.
- 高湿度的玉米料通常比干燥的玉米粒具有更高的可降解性.
- 这些可降解性差异是当在乳牛食中取代高湿度玉米料代替干玉米粒时的关键考虑因素.
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