基于Aspergillus oryzae的料添加剂对食甲排放量和养分消化能力的评估,在养的小牛中,养的是基于玉米料的食
Federico Podversich1, Juan de J Vargas1, Federico Tarnonsky1
1North Florida Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Marianna, FL, 32446, USA.
Journal of animal science
|February 19, 2026
概括
用基于Aspergillus oryzae的料添加剂 (AOF) 补充牛肉牛,改善了营养物质的消化能力,但对肠道甲排放的影响最小. 需要进一步的研究来评估AOF.
科学领域:
- 动物科学动物科学
- 农业科学 农业科学
- 环境科学 环境科学
背景情况:
- 基于Aspergillus oryzae的料添加剂 (AOF) 是改善动物营养和表现的生物技术工具.
- 实验室研究表明,AOF可能会减少甲 (CH4) 产量.
研究的目的:
- 评估AOF补充剂对肠道CH4排放和牛肉牛的营养消化能力的影响.
- 测试AOF降低CH4排放并提高牛的营养消化能力的假设.
主要方法:
- 24只安格斯杂交牛被用于一个回调设计实验.
- 治疗包括AOF含量 (0.032%的DM) 或没有添加剂 (CTL).
- 肠道CH4排放量和营养物质消化率使用硫六化物追踪技术和可消化中性洗剂纤维进行测量.
主要成果:
- 补充AOF并没有影响干物摄入量 (DMI) 或CH4排放量 (消化的g/d或g/kg DM).
- 加入AOF显著提高了有机物,中性清洁剂纤维,酸性清洁剂纤维和原始蛋白质的消化能力.
- 尽管改善了营养物质的消化能力,AOF对CH4排放的影响是微不足道的.
结论:
- 用基于Aspergillus oryzae的料添加剂的补充增强了牛肉牛的营养消化能力,这些牛以玉米料为基础的饮食.
- 对肠道CH4排放的影响并不显著,表明影响有限.
- 需要进一步调查,以确定AOF是否可以减少每单位动物产品的CH4排放强度.
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