The source of roughage is extremely wide. It includes hay, straw, oyster shells and so on. Dry grass is cultivated or wild grass after cutting is made by wind, dry or artificial drying, high nutritional value; straw and oyster shell is the remaining stems and husks after harvest, such as corn stalks, bean stalks and Dried corn leaves, sorghum leaves, bean husks, wheat husks, peanut pods, sweet potato vines, bean stalks, mung bean stalks, etc. Since the crop is mature, most of the nutrients have been concentrated in the seeds, and the crude fiber content of stems and leaves has increased, so its nutritional value is lower than hay. Nutritional characteristics 1 High content of crude fiber. The crude fiber content of hay is about 25% to 30%, and straw stalks are 25% to 30%. Crude fiber contains more lignin and is difficult to digest. For example, the digestibility of crude fiber from alfalfa hay is only 45%, and that of soybean clams is 36%. In the roughage, especially in the eucalyptus glutinous stalks, which are mainly soluble fractions of semi-fibers and polypentoses, nitrogen-free extracts lack starch and sugar, and therefore, the digestibility is low. 2 The content of crude protein varies greatly. Crude protein content was mainly in leguminous hay, straw, clam shells, and sweet potato vines, etc. Gramineous hay was the center, and grasses and pods were the lowest. For example, legume hay and sweet potato contain 8% to 18% of crude protein, grass hay is 6% to 10%, and straw and clam shell are only 3% to 5%. Straw feed crude protein is difficult to digest. 3 Rich in calcium and phosphorus. Sweet potato vines in the roughage contained more than 1.69% calcium, leguminous hay and straw, and oyster shell calcium were also high, about 1.5%. Gramineae hay and straw had lower calcium content, about 0.2% to 0.4%. Phosphorus content, a variety of hay about 0.15% to 0.3%, and a variety of straw more than 0.1%. Roughage contains more potassium and is an alkaline feed. 4 various vitamin levels. Rich in vitamin D, other vitamins are less. There is more carotene in the good hay, hay with poor quality contains less carotene after sun exposure, and there is almost no carotene in the straw and oyster shell. The hay contains a certain amount of B vitamins, of which the riboflavin content of leguminous hay such as alfalfa hay is quite abundant, and the B vitamins are lacking in the straw. All kinds of roughage, especially sun-dried leguminous hay, contain a lot of vitamin D2, which is a good source of vitamin D for cattle. Collection use Although crude fiber contains a lot of crude fiber, it is difficult to digest, and the nutritional value is low, but it does belong to the main feed for cattle. In the long-term feeding process, the cow has formed better adaptability and higher digestibility of roughage, which is also related to the special digestive organs of cattle. The digestive tract of cows has a large volume and must be filled with roughage in order to ensure that the digestive organs are normally peristaltic and physiologically full. Therefore, roughage is a very important basal feed for cattle, especially in winter and dry season, it is very necessary to maintain the health of cattle and a certain level of production. In order to increase the use value of roughage, attention should be paid to the following issues when storing and feeding: 1 The contents of nutrients in the leaves of various types of hay and straw are higher than those in stems, and the nutritional value is high. Therefore, when preparing and storing roughage, care should be taken not to lose the leaves. During the harvest period of the crops, when the seeds have matured without affecting the yield, they should be harvested as early as possible in order to avoid the lignification of the plants. With this measure, the quality of various straws can be further improved. Dry hay and straw as much as possible, do not expose to sunlight, then stack, in order to reduce feed waste, prevent feed rot. 2 The single grasses such as straw, wheat straw, etc., contain crude protein, calcium, phosphorus and other nutrients can not meet the nutritional needs of cattle, it should be used with protein, calcium and phosphorus content of legume hay with more To improve the utilization of roughage. Roughage is generally a lack of phosphorus, in addition to high quality hay, carotene content is very small, or even not, so appropriate feeding a little green feed is very necessary. 3 In order to save manpower in some places, the whole corn stalks are often placed in the cowshed so that the cows can eat the upper shoots and leaves and use the remaining part as fuel. This method is often used for feeding with bean straw. The cows eat the upper stems and pods, and the remaining coarse stems are used as litter. This method is feasible in rough-rich farm areas. 4 In order to improve the digestibility and palatability of the straw, it can be treated by physicochemical or biological methods such as spraying salt water, fermentation, ammoniation and alkalization. While feeding straw, adding green and juicy feed can significantly increase the digestibility of roughage and increase the palatability of roughage. Biological fingerprints have the characteristics of uniqueness and stability, without the permission of the highest authority of the manager, any individual without qualified fingerprints can not enter. Therefore, the fingerprint safe relative to other categories of safe, a good solution to the problem of others imitation keys to open the door. If you use a traditional mechanical safe, you may face risks such as having a key made by others or using a special unlocking tool to open the lock. Fingerprint Safe,Coffee Color Safe,Fingerprint Panel Safe,Gold Color Fingerprint Safe,The Material Of Fingerprint Safe Hebei Hupai Aodi Cabinet Industry Co.,Ltd. , https://www.aodicabinet.com