Nutrient value of wild fodder species and the implications for improving the diet of mithun (Bos frontalis) in Dulongjiang area, Yunnan Province, China.
Nutrient value of wild fodder species and the implications for improving the diet of mithun (Bos frontalis) in Dulongjiang area, Yunnan Province, China.
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云南独龙江地区野生饲料品种的营养价值及其对改良斑鳢食性的启示
DOI：
10.1016/j.pld.2020.09.007
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发表时间：
2020-12
期刊：
影响因子：
4.8
通讯作者：
Xu J
中科院分区：
文献类型：
--
作者：
Geng Y;Ranjitkar S;Yan Q;He Z;Su B;Gao S;Niu J;Bu D;Xu J
野生饲料植物很有价值，因为它们在全球范围内提供了重要的牲畜饲料资源，特别是对小农而言，并在自然资源管理中发挥重要作用。深入了解野生饲用植物可以激励当地人民保护受威胁的食草动物，如米顿（Bos frontalis）的饲料资源和栖息地。独龙江山区小块地出现米顿，附近村民驯养了这种动物，但将动物留在山上自由放牧。许多饲料植物出现在这些山区，但对它们的营养价值知之甚少。本文对独龙江乡的重要野生饲料植物进行了民族植物学调查。本文对民族植物学调查中提到的21种野生饲料植物的营养成分进行了研究。实验室分析结果表明，粗蛋白含量最高的饲用植物是金荞麦（26.89%），其次是软毛蓼（21.88%）和长柄绣球（21.12%）。综合相对饲用价值指数和灰色关联度分析，软毛松、长柄黑松和三叶青是排在前三位的营养饲料。21个种间的体外消化率差异显著，其中台湾楼梯草的体外消化率最高。对21种野生牧草被当地农民引用的频次与其营养成分的线性模型分析表明，被引用频次与饲料的营养价值呈显著正相关（R2 = 0.28，P < 0.05）。我们的结论是，这些物种具有很高的营养价值，以提高mithun生产综合作物畜牧系统。可以培育具有有用营养特性的饲料物种或物种混合物，以提高畜牧生产力，保护生境，包括mithun和野生饲料资源管理。
Wild fodder plants are valuable because they provide an important livestock feed resource globally, especially for smallholder farmers, and have important roles in natural resource management. In-depth knowledge of wild forage plants can motivate local people for feed resource and habitat conservation of threatened herbivores such as Mithun (Bos frontalis). Mithun occur in small patches in the mountains of Dulongjiang, nearby villagers domesticated this animal but left animal to freely graze in the mountains. Many fodder plants occur in these mountains, however, little is known about their nutritional value. We conducted an ethnobotanical survey to document important wild fodder plants consumed by mithun in the Dulongjiang Township. The nutritional content of 21 highly mentioned wild fodder plants in an ethnobotanical survey was examined. Laboratory analysis showed that Fagopyrum dibotrys were the fodder species with the highest crude protein (CP) content (26.89%), followed by Polygonum molle (21.88%) and Hydrangea longipes (21.12%). Synthesis of relative feed value index and grey relational grade, P. molle, H. longipes and Tetrastigma obtectum were ranked the top three nutritional fodders. There was a significant difference between 21 species on their in vitro digestibility and the most highly digestible fodder species was Elatostema hookerianum. Linear model analysis on relationship between frequency of citation of 21 wild forage plants by local farmers and their nutrient composition showed that the frequency was significantly positively correlated with the nutritional value of the feed (R2 = 0.28, P < 0.05). We concluded that these species have high nutritional values to improve mithun production in integrated crop-livestock systems. Fodder species or mixtures of species with useful nutritional characters could be cultivated to improve livestock productivity, habitat conservation including that of mithun and wild forage resource management.
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