尼龙袋法评定精油提取前后薰衣草瘤胃降解特性差异

›› 2013, Vol. 40 ›› Issue (11): 71-74.

尼龙袋法评定精油提取前后薰衣草瘤胃降解特性差异

刘华¹, 杨红建², 王国庆¹, 杨开伦¹, 余雄¹

1. 新疆农业大学动物科学学院, 新疆乌鲁木齐 830052;
2. 中国农业大学动物科技学院, 动物营养学国家重点实验室, 北京 100193

收稿日期:2013-07-16 出版日期:2013-11-20 发布日期:2013-12-19
通讯作者: 杨红建 E-mail:yang_hongjian@sina.com
作者简介:刘华(1982-),女,山东人,硕士,研究方向:反刍动物营养。
基金资助:
重点牧区"生产生态生活"保障技术集成与示范(2012BAD13B00)。

In Situ Rumen Degradation Characteristics of Lavender Hay before and after Essential Oil Extraction

LIU Hua¹, YANG Hong-jian², WANG Guo-qing¹, YANG Kai-lun¹, YU Xiong¹

1. College of Animal Sciences, Xinjiang Agricultural University, Urumuqi 830052, China;
2. State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received:2013-07-16 Online:2013-11-20 Published:2013-12-19

摘要/Abstract

摘要： 选择3只安装有瘤胃和十二指肠瘘管的新疆哈萨克公羊为试验动物,采用尼龙袋法比较精油提取前后薰衣草在瘤胃内培养6、12、24、36、48、72 h干物质(DM)与粗蛋白质(CP)的降解特性。结果表明,精油提取前后薰衣草中CP、中性洗涤纤维、酸性洗涤纤维含量变化差异较小。精油提取后,薰衣草DM和CP瘤胃消失率出现显著下降(P<0.05);尽管精油提取前后瘤胃动态降解参数a和b值差异不显著(P>0.05),但精油提取后降解速率c值和有效降解率显著下降(P<0.05),这或许与精油提取后薰衣草细胞壁中香草酸、原儿茶酸和阿魏酸在总酚酸中的比例分别升高26.5%、33.3%和24.8%有关。总之,就瘤胃降解率而言,精油提取前的薰衣草具有更高的饲用价值。

关键词: 薰衣草; 瘤胃降解率; 尼龙袋法

Abstract: Three rumen fistulated Xinjiang Kazakhstan rams were applied as experiment animals to compare ruminal degradation kinetics of lavender hay before and after essential oil extraction using a nylon bag technique. The hays placed in nylon bags were incubated with duplicate for 6, 12, 24, 36, 48 and 72 h in the rumen of each ram. No obvious differences between essential oil unextracted and extracted lavender hay were observed for crude protein, neutral detergent fibre and acid detergent fibre, the rumen disapperance rates of DM and CP decreased significantly after the essential oil extracted (P<0.05). Although the rapidly degradable portion a value and slowly degradable portion b value did not differ between unextracted and extracted lavender hays (P>0.05), the degradation rate c and effective degradability values for DM and CP were significantly lower in the extracted hay than the unextracted hay (P<0.05), and such results might be due to greater contents of vanillic (26.5%), protocatechuic (33.3%) and ferulic acids (24.8%) occurred in the oil extracted hay. In summary, essential oil unextracted lavender hay exhibited high nutritive value in term of rumen degradation rate.

Key words: lavender hay; rumen degradation rate; nylon bag technique

中图分类号:

S816.32

刘华, 杨红建, 王国庆, 杨开伦, 余雄. 尼龙袋法评定精油提取前后薰衣草瘤胃降解特性差异[J]. , 2013, 40(11): 71-74.

LIU Hua, YANG Hong-jian, WANG Guo-qing, YANG Kai-lun, YU Xiong. In Situ Rumen Degradation Characteristics of Lavender Hay before and after Essential Oil Extraction[J]. , 2013, 40(11): 71-74.

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