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How does silage keep feed fresh and nutritious?

After the fresh plants are taken back, the original plant cells have not completely died, so the plants will decompose sugar into carbon dioxide and water in an aerobic environment, and release energy to cause nutrient loss. The silage is mainly fermented in an anoxic environment, effectively isolating oxygen to prevent the loss of nutrients in plants.

How does silage ferment?

The process by which lactic acid bacteria inhibit and kill other bacteria. Microorganisms in silage can be divided into two types that are beneficial to silage and unfavorable to silage. Among them, lactic acid bacteria are beneficial to silage, and like to grow and reproduce in a humid, anoxic, and certain sugar environment; while microorganisms that are unfavorable to silage include butyric acid bacteria. , spoilage bacteria, acetic acid bacteria, fungi, etc., and they have one thing in common that they like oxygen and are not acid-resistant. Therefore, in order to succeed in silage, it is necessary to provide an anaerobic, moist, and certain sugar environment for lactic acid bacteria, which is conducive to the growth of lactic acid bacteria. Growth and reproduction, lactic acid bacteria will convert sugars into lactic acid. When the acidity continues to increase, other microorganisms that are not conducive to silage, especially spoilage bacteria, will die soon in an acidic environment. Finally, when the acidity value of silage drops At about 4, all microorganisms including lactic acid bacteria stop their activities, so that the feed is stored for a long time under the protection of lactic acid.

How does silage maintain an anaerobic, moist, and sugary environment?

Raw materials with high sugar content are beneficial to silage. The sugar content in the raw materials should be at least 1% to 1.5% of the fresh weight. Raw materials such as plants and potato stems and leaves contain less sugar and more protein, so they are generally not suitable for silage alone. Commonly used gramineous plants include corn, sweet sorghum, wheat and straw, and legumes include milk vetch, alfalfa (mu xu) and sandawang.

Taking corn stalks as an example, when the ears of corn stalks are mature and only the lower 3~5 leaves are yellow, they should be harvested immediately for silage. When harvesting, reserve 10 cm to prevent soil and plastic film from being brought into the pond. The cutting length should be appropriate. Corn stalks are generally cut into 1.5-2cm, which is easy to compact and compact to help exhaust air. The suitable moisture content of raw materials is 65%-70%, if it exceeds 70%, it can be mixed with crushed hay or straw for silage. To judge the moisture content, grab a handful of crushed corn stalks and squeeze them hard for 30 seconds. If water flows out or there is water between the fingers after you let go of your hands, the raw materials are too wet at this time, and should be dried for a period of time, or mixed with hay The straw is mixed with silage. When the hands are loosened, the dough slowly disperses. The water content is suitable if the hands are not wet. If the hands are loosened, the dough immediately disperses. At this time, the water content is low and water needs to be added appropriately.

The filling must be compacted. Clean the bottom of the cellar while loading and spreading. Except that the bottom layer is thicker, and every 20-30 cm is loaded, it can be repeatedly rolled by a crawler tractor and then filled. And the corners should be stepped on manually. The shorter the filling time, the better. Finally, seal the cellar to seal the silage raw materials tightly to prevent air and water from entering. Fill the silage raw materials to about 50 cm above the cellar mouth, and spread a layer on top. Hay, covered with colored cloth, and then sealed with plastic film, compacted and covered with soil to seal the cellar. Pay attention to the sinking of the silage every day, whether it causes cracks and sinking of the cover soil, it should be repaired in time. Generally speaking, after about 40 days, the fermentation can be completed.

Making Silage Six Quicks

Fast cutting, fast shipping, fast cutting, fast loading, fast pressing and fast sealing

Commonly used additives to improve silage quality, increase palatability and digestibility

1. Fermentation promoters can promote the fermentation of lactic acid bacteria, commonly used are lactic acid bacteria agents, enzyme preparations, molasses, salt, etc.

2. Protective agent Inhibit the activity of harmful bacteria, prevent raw materials from spoilage and mildew, and reduce nutrient loss. Commonly used are phosphoric acid, propionic acid, acetic acid, formaldehyde, etc.

3. Nutritional additives to improve the nutritional value of silage and improve the palatability of raw materials, such as urea, ammonia, molasses, etc.