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The favorable climatic resources in Yunnan Province have nurtured the rich and diverse plant resources, providing various sources of forage for the development of local herbivorous animal husbandry. Yet, the vast majority of the plant resources has not been well excavated and utilized, which not only severely restricts the development of herbivorous animal husbandry, but also leads to high consumption of feed grains. Consequently, exploring protein-rich plants with high feeding value is of great significance for the green and healthy development of herbivorous animal husbandry in Yunnan Province. This study measured 16 nutritional indicators, including crude protein, crude fiber, neutral detergent fiber, calcium and phosphorus of 25 common protein forages collected from the subtropical areas of Yunnan Province. The nutritional values of the plants were comprehensively evaluated using grey correlation analysis. The crude protein content of the tested plants varied from 11.03% to 21.73%, among which the crude protein content of 6 plants, including Trifolium repens L. cv. Haifa, Lablab purpureus, Medicago sativa, Sophora davidii, Amorpha fruticosa and Robinia pseudoacacia was above 20%, suggesting good protein for rotein feed. The crude protein content of the remaining 19 plants, such as Broussonetia papyrifera and Leucaena leucocephala, ranged from 11.03% to 18.69%, meeting the basic requirements for the protein feed. According to the comprehensive evaluation, there were 15 plants with excellent nutritional value, among which the top 4 were L. purpureus, T. repens L. cv. Haifa, B. papyrifera and Stylosanthes guianensis, which have significant development and utilization value. Among the 10 plants evaluated as moderate, the crude protein content of S. davidii and R. pseudoacacia exceeded 20%, while the trace element content of Fe, Cu, Zn, and Se in Cajanus scarabaeoides, C. cajan, R. pseudoacacia, S. davidii, Haymondia wallichii and Lespedeza cuneata demonstrated significantly higher levels than that of corn. In the future development and application, the nutritional characteristics of protein-rich forages should be fully utilized, and it should be used in combination with the other feeds to meet the balanced nutritional needs of livestock, achieve cost saving and efficiency improvement by reducing soybean meal reduction and promoting healthy breeding of herbivorous livestock.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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