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当前位置: 首页 > 文章 > 参薯茎叶营养成分和饲用价值分析 饲料工业 2019 (8) 17-21
Position: Home > Articles > Analysis on nutritional ingredient and feeding value of stem and leaf of Dioscorea alata L. Feed Industry 2019 (8) 17-21

参薯茎叶营养成分和饲用价值分析

作  者：
王高鑫;黄东益;周汉林;王定发;吴文嫱;王坚;黄小龙
单  位：
中国热带农业科学院热带作物品种资源研究所;海南大学热带农林学院
关键词：
参薯;营养成分;饲料相对值;饲料分级指数;单宁
摘  要：
为了评定参薯茎叶的饲用价值。对21个参薯品系茎叶的营养成分含量及单宁含量进行进行评价。结果表明参薯茎叶有着良好的营养水平和评价结果,干物质基础的含量平均值分别为:粗蛋白质19.55%、粗脂肪2.70%、粗纤维25.16%、粗灰分9.23%、酸性洗涤纤维33.76%、中性洗涤纤维50.73%、无氮浸出物43.36%、单宁0.66%。RFV和GI的均值为115.20和3.37,分别达到2级和3级饲料标准。其中粗蛋白质水平良好,均值高于甘薯蔓、柱花草和特级牧草标准;酸性洗涤纤维、中性洗涤纤维、粗脂肪含量与甘薯蔓和柱花草有着相近的含量水平,同时有着较低的单宁含量,居于适量的单宁含量标准(0.5%～5.5%)。研究显示参薯茎叶具有饲用的潜质,可以作为饲料开发利用。
译  名：
Analysis on nutritional ingredient and feeding value of stem and leaf of Dioscorea alata L.
作  者：
Wang Gaoxin;Huang Dongyi;Zhou Hanlin;Wang Dingfa;Wu Wenqiang;Wang Jian;Huang Xiaolong;
关键词：
Dioscorea alata L.;;nutritional ingredient;;relative value of feed;;feed grading index;;tannin
摘  要：
In order to evaluate the feeding value of Dioscorea alata L. stems and leaves, the nutrientcontent and tannin content of stems and leaves of 21 cultivars of Dioscorea alata L. were determined byadopting two kinds of evaluation systems: the relative feed value of RFV and the coarse feed grading index of GI. The results showed that the stems and leaves of Dioscorea alata L. had a good nutritionalcomposition and evaluation results. The average content of dry matter of 21 cultivars of Dioscorea alataL. contained 19.55% crude protein, 2.70% crude fat, 25.16% crude fiber, 9.23% crude ash, 33.76% acid detergent fiber, 50.73% neutral detergent fiber, 43.36% nitrogen free extract and 0.66% tannin. Themean values of RFV and GI were 115.20 and 3.37, respectively. According to the feed standards, theyhave reached level-2 and level-3. The average level of crude protein was higher than that of sweet potato stem, Stylosanthes and special-grade forage. The content of acid detergent fiber, neutral detergentfiber and crude fat was similar with that of sweet potato stem and Stylosanthes. At the same time, it hasa lower tannin content and a moderate amount of tannin content(0.5%～5.5%). To sum up, the stemsand leaves of Dioscorea alata L. have the potential to feed, and can be developed and utilized.

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