Store feed must prevent secondary fermentation

September 22, 2024

Right now, it is the time when corn stalks, peanut pods, pastures, etc. are harvested for silage for livestock and poultry feed. Silage is a kind of succulent feed that is filled with fresh green fodder in a closed silo. It is made of soft, juicy, fragrant, nutrient-rich, easy-to-store, and animal-like feed that is fermented by microorganisms. However, farmers need to be reminded to prevent secondary fermentation of silaged silage when feeding. Secondary fermentation refers to the silage produced in the ventilated section due to the increase in the temperature in the pit when the silage is fed in the open cellar. The original armor of the secondary fermentation of silage is caused by the aerobic bacteria's active propagation after the silage in the closed anaerobic state is exposed to air. Especially when the temperature is high, the better-quality silage is liable to secondary fermentation. After secondary fermentation, the sugar content of silage can be lost by 10% - 24%. If there is a large amount of mold activity and mildew or nitrite is produced, after feeding the cow, there will be a certain degree of harm to the cow or adverse consequences. The methods for preventing the secondary fermentation of silage are: when the silage is chopped, it should not be too long, suitable for 1cm--2.5cm; the moisture content should be 60%--75%, and the density should be high, every cubic meter. The weight should not be less than 700kg; the raw materials should be timely harvested, in particular, the corn stover should be prevented from frost damage. After each silage is taken out, the surface is covered with a plastic sheet so that it is not ventilated. If the seal is not strict, appropriate amounts of chemical agents such as propionic acid, urea and ammonia can be added to prevent mildew. China Agricultural Network Editor

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