影响饲草利用效率的因素很多,究其原因有二类,一是饲草本身的因素,二是外在因素。饲草本身因素包括饲草品种、生育期、栽培管理水平等,外在因素包括草畜适配、加工方法、饲喂方式、补充精料水平等。饲草品种是影响其饲用价值的主要因素,不同的饲草品种营养价值千差万别。一般而言,豆科牧草有较高的蛋白质含量,但适口性较差,营养物质消化率较低,且不宜作为唯一日粮;禾本科牧草含有较多的碳水化合物,适口性好,消化 There are many factors that affect the efficiency of forage utilization. There are two reasons for this. First, factors of forage itself and second, external factors. Forage itself factors include forage species, growth period, cultivation and management level, external factors include grass and animal adaptation, processing methods, feeding methods, such as the level of concentrate supplement. Forage varieties are the main factors affecting the value of their forage, different forage varieties of nutritional value vary widely. In general, legumes have higher protein content, but less palatability, lower digestibility of nutrients, and should not be used as the only diet; grasses contain more carbohydrates, palatability, digestion