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青草的收割时期和调制方法不同,其营养成分的含量差异很大。据分析,冬季的自然枯草同夏季割晒的青干草相比,其营养损失70％以上,1斤青干草顶3～5斤枯草的营养价值。因此,应重视青干草的收割时机与调制方法。收割时期:收割过早产量低,调制困难;收割过晚,维生素和蛋白质含量减少,粗纤维增多,草质过于粗硬,适口性差,消化率低。
Grass harvest time and modulation methods are different, the content of nutrients vary widely. According to the analysis, natural hay in winter compared with summer hay sun hay compared to its nutritional loss of more than 70%, 1 kg of hay top 3 to 5 pounds of hay nutritional value. Therefore, we should pay attention to the timing and modulation of harvesting hay. Harvest period: premature harvest low yield, difficult to prepare; harvest too late, vitamin and protein content decreased, increased crude fiber, the grass is too rough, poor palatability, low digestibility.