评估各种基于蛋白质的混合配给的发酵质量,有氧稳定性和降解 (in situ) 特性
Halidai Rehemujiang1, Hassan Ali Yusuf1,2, Tao Ma1
1Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs, Institute of Feed Research of Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Animals : an open access journal from MDPI
|September 9, 2023
概括
用棉花粉或大麻粉进行总混合粮食 (TMR) 的益生菌发酵,提高了发酵质量和营养降解. 这一过程还减少了反营养因素,提高了牲畜的料安全性和有效性.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 农业化学 农业化学
背景情况:
- 总混合配给 (TMR) 对牲畜营养至关重要.
- 像棉花 (CSM) 和大菜 (RSM) 这样的蛋白质来源可能含有反营养因素.
- 益生菌发酵为改善料质量和减少毒性提供了一种潜在的方法.
研究的目的:
- 评估益生菌发酵对TMRs的影响,使用CSM和RSM作为蛋白质来源.
- 评估发酵质量,化学成分,有氧稳定性和反营养因素的变化.
- 为了确定对in situ营养物质消失特征的影响.
主要方法:
- 用大豆粉 (对照组),发酵的CSM (F-CSM) 和发酵的RSM (F-RSM) 制备了TMR.
- 在50%的湿度下用*Bacillus clausii*和*Saccharomyces cariocanus*进行注射.
- 60小时的有氧储存,通过尼龙袋方法分析pH值,温度,有机酸,微生物种群和营养物质降解.
主要成果:
- 发酵使F-CSM中的自由gossypol减少了50%,而F-RSM中的葡萄酸盐减少了50%以上.
- 与对照组相比,益生菌发酵改善了营养降解率 (DM,CP,NDF,ADF).
- 空气暴露导致温度升高和有机酸概况改变,酵母种群在下降之前达到峰值.
结论:
- 使用*B. clausii*和*S. cariocanus*进行益生菌发酵可以提高使用CSM或RSM时的TMR质量.
- 这种发酵过程有效地减少了反营养因素,导致了排毒.
- 改善营养成分和降解率有利于牲畜营养和料利用.
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