丝兰提取物对奶牛人工瘤胃发酵指标的影响  

Effects of yucca extract on dairy cattle artificial ruminal fermentation parameters

作　　者：田丽新[1] 史彬林[1] 付晓政[1] 李倜宇[1] 赵启龙[1] 岳远西 苏俊玲[1] 

机构地区：[1]内蒙古农业大学动物科学学院,内蒙古呼和浩特010018

出　　处：《粮食与饲料工业》2014年第6期53-55,60,共4页Cereal & Feed Industry

基　　金：农牧交错区生态型现代奶业生产模式研究与示范(2012BAD12B09-3)

摘　　要：试验采集荷斯坦奶牛的瘤胃液,进行体外发酵试验。探究在培养底物中添加不同水平的丝兰属植物提取物(0%、0.3%、0.6%、1.2%和2.4%)对2、6、12、18和24h产气量及24h培养液pH值、氨态氮浓度、菌体蛋白浓度和干物质降解率的影响。结果表明:添加不同水平丝兰属植物提取物处理组6、18和24h的产气量均低于对照组,18h时2.4%丝兰属植物提取物处理组产气量显著低于对照组和0.3%丝兰属植物提取物处理组;24h时1.2%和2.4%丝兰属植物提取物处理组产气量显著低于对照组。2.4%丝兰属植物提取物处理组氨态氮浓度显著低于对照组。丝兰属植物提取物对干物质降解率、pH值以及菌体蛋白浓度没有显著影响。The tureen fluid of Holstein cows was collected and used for in vitro fermentation test. With 0%, 0.3%0, 0.%, 1.2% and 2.4% of yucca extract（YE） added in their basic culture substrate, respectively,the experiment lasted for 24 h, and the gas production （at 2, 6, 12,18 and 24 h, respectively）, pH value, NH3-N content, BCP concentration, and the degrada- tion rate of dry matter at 24 h were measured and analyzed. The experiment results showed that： gas production of different levels of YE treatment groups at 6, 18 and 24 h were lower than that of the control group, and gas production of 2.4% YE treatment group at 18 h was significantly lower than that of the control group and 0.3%YE treatment group, and gas produc- tion of 1.2% and 2.4%YE treatment groups at 24 h were significantly lower than that of the control group; NH3-N content of 2.4% YE treatment group was significantly lower than that of the control group; YE had no significant influence on the degra- dation rate of dry matter, pH and BCP concentration.

关 键 词：丝兰属植物提取物 奶牛 人工瘤胃 氨态氮 菌体蛋白 pH值 

分 类 号：S816.7[农业科学—饲料科学] S823.1[农业科学—畜牧学]