粗饲料的来源极广，它包括干草、秸秆、秕壳等。干草是栽培或野生青草刈割后经风吹、阴干或人工干燥制成的，营养价值较高；秸秆和秕壳是籽实收获后剩余的茎叶及皮壳，如玉米秸、豆秸和经晒制的玉米叶、高粱叶、豆壳、麦壳、花生秧、地瓜蔓、小豆秸、绿豆秸等。由于作物已经成熟，大部分养分已集中于籽实内，茎叶粗纤维含量增高，所以它的营养价值比干草低。
The source of coarse fodder is very wide, it includes hay, straw, blight shells and so on. Hay is cultivated or wild grass after cutting by wind, dry or artificial drying made of high nutritional value; straw and blight shell is the seeds after harvest the remaining stems and leaves and hulls, such as corn stalks, bean stalks and the Sunny corn leaves, sorghum leaves, beans shell, wheat husk, peanut seedlings, sweet potato vine, small bean stalks, green bean stalks and so on. As the crop has matured, most of the nutrients have been concentrated in the seed, the crude fiber content of stems and leaves increased, so its nutritional value is lower than hay.
营养特点：
Nutritional characteristics:
A:粗纤维含量高:干草的粗纤维含量约为25%～30%，秸秕类达25%～30%以上。粗纤维中含有较多的木质素，很难消化。在粗饲料中，特别是在秕秸类中主要是半纤维及多戊糖的可溶部分，无氮浸出物中缺乏淀粉和糖，因此，消化率低。
A: crude fiber content is high: the crude fiber content of hay about 25% to 30%, straw blight class up to 25% to 30%. Crude fiber contains more lignin, it is difficult to digest. In roughage, especially in the unblended stalks, mainly hemicellulose and polysaccharides soluble part of nitrogen-free extract lack of starch and sugar, therefore, low digestibility.
B:粗蛋白质的含量差异大:粗蛋白质含量以豆科干草、秸秆、荚壳及地瓜蔓等较多，禾本科干草居中，禾本科秸秆、秕壳最低。秸秕饲料粗蛋白质很难消化。
B: crude protein content difference: crude protein content to Leguminous hay, straw, pod shell and sweet potato vine more, grass hay center, Gramineae straw, hull the lowest. Straw blight feed crude protein is difficult to digest.
C:钙、磷含量丰富:粗饲料中甘薯蔓含钙在1.69%以上，豆科干草和秸秆、秕壳含钙也很高，在1.5%左右，禾本科干草和秸杆含钙较低，约为0.2%～0.4%。磷的含量，各种干草约在0.15%～0.3%之间，而各种秸杆多在0.1%以下。粗饲料含钾较多，属碱性饲料。
C: Calcium and phosphorus are abundant: The content of calcium in the sweet potato is more than 1.69% in the coarse feed, the calcium content in the hay and stalk is also high, about 1.5% in the hull and the straw. Is 0.2% to 0.4%. Phosphorus content, a variety of hay about 0.15% to 0.3%, while the variety of straw more than 0.1%. Roughage more potassium, an alkaline feed.
D:各种维生素含量不等:维生素D含量丰富，其他维生素含量则较少。优良的干草中有较多的胡萝卜素，日晒后品质不良的干草含胡萝卜素很少，秸秆和秕壳几乎没有胡萝卜素。干草中含有一定量的B族维生素，其中豆科干草如苜蓿干草的核黄素含量相当丰富，秸杆类中缺乏B族维生素。各种粗饲料，特别是日晒的豆科干草含有大量维生素D2，是舍饲鹿维生素D的良好来源。
D: a variety of vitamin content: Vitamin D rich, other vitamin content is less. Good hay in more carotene, poor quality hay after sun exposure with little carotenoids, straw and bare shells almost no carotene. Hay contains a certain amount of B vitamins, including leguminous hay grass, such as alfalfa hay of riboflavin content is quite rich, lack of B vitamins in straw. A variety of roughage, especially the sun's legume hay contains large amounts of vitamin D2, is a good source of deer vitamin D.
