柠条对牛的饲用价值研究

Nutrient Evaluation of Caragana Korshinskii on Cattle

柠条在北方旱区防风固沙、环境保护等生态建设中起着重要的作用,作为改善生态环境的先锋植物,在北方旱区已经大面积种植。柠条———作为耐牧植物,是夏秋季牛、羊等草食畜的良好饲料。本试验对柠条在冬春季节的饲料化开发利用上进行了探索性研究。结果表明:柠条无叶期枝条,同样具有一定的饲用价值:其代谢能(ME)为6.559MJ/kg.干物质);可消化总养分(TDN)达43.63%;泌乳净能(NEL)为3.265MJ/kg.干物质;每千克干物质中含奶牛能量单位(NND)为1.035。研究表明,柠条在饲料化开发利用方面前景广阔。

Planting and cultivation of Caragana Korshinskii played an important role in sand storm prevention, envi- ronment protection, and ecological construction in arid area of Northern China, as a priority shrub in improving the eco- logical environment, Caragana had been extensively planted in northern China and also was used as the nutritive feeds for grazing cattle, goats and sheep during summer and fall. The study on the feed resource development of Caragana Korshin- skii in winter and spring indicated that leafless branches of Caragana had the certain feeding value, the metabolizable en- ergy (ME), total digestable nutrient (TDN), net energy of lactation (NEL), and dairy cattle energy unit (NND) of Caragana were 6.559 (MJ/kg DM), 43.63%, 3.265 (MJ/kg DM), 1.035 (unit/kg DM), which suggested the great potential of Caragana utilization in animal feeding.