In foreign countries, silage towers are commonly used for semi-dry silage preservation, and the cost of silage towers is relatively high. In China, silage storage tanks are generally used. No matter which method is used, the key is to first make the pods air-dry quickly to reduce the water content to 40% to 50%. Silage. This silage combines the advantages of hay and silage. 1, silicic acid silage This is a method promoted abroad in recent years. The method is to add 85% to 90% formic acid of 2.8 to 3kg per ton of silage raw material, and spray in layers. Formic acid in silage and rumen digestion can be decomposed into carbon dioxide and methane that are non-toxic to livestock, and formic acid itself can also be absorbed and utilized by domestic animals. Feeding milk calves with this silage has an average daily weight gain of 0.757- 0.817kg, nearly 1 times higher than normal silage weight gain. 2. Stretch film silage technology This is a new method adopted by foreign countries in recent years and all mechanized operations. The operating procedures are: mowing - baling - bale - winding stretch film. Its advantages are mainly not affected by weather changes, long preservation time, generally can be stored for 3 to 5 years.
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