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当前位置: 首页 > 文章 > 不同精粗比底物下不同添加剂对绵羊瘤胃体外发酵的影响 饲料工业 2013 (9) 25-29
Position: Home > Articles > Effect of different additives on in vitro rumen fermentation differing in forage-to-concentrate ratios Feed Industry 2013 (9) 25-29

不同精粗比底物下不同添加剂对绵羊瘤胃体外发酵的影响

作  者：
杨平平;甄玉国;王晓磊;赵巍;于中英
单  位：
吉林农业大学动物科学技术学院
关键词：
精粗比;酵母培养物;米曲霉提取物;植物精油;体外发酵
摘  要：
试验旨在比较研究不同精粗比底物下酵母培养物、米曲霉提取物和植物精油对绵羊瘤胃体外发酵的影响。采用两因素交叉分组试验设计,因素一有4个水平,分别为对照组、添加酵母培养物、米曲霉提取物、植物精油;因素二有3个水平,分别为精粗比3:7、5:5、7:3;培养24 h进行采样并测定培养液pH值、NH3-N、VFA浓度。结果表明:①从整体趋势看,随着精粗比的增加,培养液VFA浓度逐渐增加,pH值、NH3-N浓度逐渐降低。②YC组在各精粗比底物下与对照组相比,极显著提高培养液VFA浓度,极显著降低pH值(P<0.01),对NH3-N浓度的影响仅在精粗比3:7和5:5达到显著水平(P<0.05)。③AO组在精粗比5:5底物下,与对照组相比,极显著增加乙酸、TVFA浓度(P<0.01);在精粗比7:3底物下,与对照组相比,显著增加乙酸(P<0.05),极显著增加TVFA浓度(P<0.01)。④EO组在精粗比7:3底物下,与对照组相比,极显著增加乙酸、丙酸和TVFA浓度(P<0.01),显著增加丁酸浓度(P<0.05)。
译  名：
Effect of different additives on in vitro rumen fermentation differing in forage-to-concentrate ratios
作  者：
Yang Pingping,Zhen Yuguo,Wang Xiaolei,Zhao Wei,Yu Zhongying
关键词：
concentrate to forage ratio;yeast culture;aspergillus oryzae extract;essential oil;in vitro rumen fermentation
摘  要：
This study was designed to evaluate effects of different additives on in vitro rumen fer mentation differing in forage-to-concentrate ratios.It was two factors cross group design,one factor had four levels of control,YC,AO and EO,the other factor had 3 different levels of for age to concentrate which were 3:7,5:5,7:3;After 24 h of incubation,fermentation fluid was collected and analyzed for pH,NH3-N and VFA.The results showed as follows: ① With concentrate to forage ratios increased,VFA concentration of the fermentation fluid were higher,pH and NH3-N concentration were lower(P>0.05).② YC increased VFA concentration and de creased pH and NH3-N concentration in different concentrate to forage ratio diets compared with control(P<0.01);and decreased NH3-N concentration in C:F 3:7 and 5:5 diets(P< 0.05).③AO increased acetate and TVFA(P<0.01)in a C:F5:5 ratio diet;in a C :F7 :3 ratio diet,AO increased acetate(P<0.05)and TVFA(P<0.01).④ EO increased acetate,propio nate,TVFA concentration(P<0.01),and butyric(P<0.05)in a C:F 7: 3 ratio diet compared with control.

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