How to prevent feed from going moldy and spoiling? Remember these six methods
Six methods to prevent feed from going moldy and spoiling
1. Drying to prevent mold: Most mold spores need a relative humidity of around 75% to germinate, and when the relative humidity is 80%-100%, molds grow rapidly. Therefore, when storing feed in summer, moisture and dampness must be prevented, the feed warehouse must be kept in a dry environment, and the relative humidity must be controlled at no higher than 70%. Of course, turning and sun-drying feed ingredients in a timely manner to control the moisture content of the feed ingredients is also an essential mold-prevention measure.
2. Low-temperature mold prevention: Controlling the storage temperature of feed within a range unsuitable for mold growth can also achieve the purpose of mold prevention. A natural low-temperature method can be used, that is, reasonable ventilation at the appropriate time to lower the temperature with cold air. A freezing preservation method can also be used, in which the feed is frozen and then kept insulated and sealed, and stored at low temperature or frozen. Low-temperature mold prevention must be combined with drying mold-prevention measures to achieve better results.
3. Controlled-atmosphere mold prevention: Mold growth requires oxygen, and as long as the oxygen content in the air is above 2%, molds can grow. Controlled-atmosphere mold prevention usually adopts methods such as creating oxygen deficiency or filling in gases such as carbon dioxide and nitrogen, controlling the oxygen concentration below 2%, or controlling the carbon dioxide concentration above 40%.
4. Radiation mold prevention: Molds are sensitive to radiation. According to experiments, after feed is treated with gamma-ray radiation and placed in an environment at 30°C and 80% relative humidity, no mold grows. In order to completely eliminate molds in feed, the method of irradiating feed with rays can be used.
5. Bagged mold prevention: Using packaging bags to store feed can effectively control moisture and oxygen and play a mold-prevention role. A new type of mold-prevention packaging bag developed abroad can ensure that newly packaged feed does not become moldy for a long time. This packaging bag is made of polyolefin resin and contains 0.01%-0.05% vanillin or ethyl vanillin. It not only prevents feed from becoming moldy, but also has a fragrant aroma and enhances the palatability of the feed.
6. Chemical mold prevention: Molds are everywhere. Therefore, no matter what kind of feed it is, as long as the moisture content exceeds 13% and the feed is stored for more than 2 weeks, a mold inhibitor should be added before storage. Optional agents include propionic acid, sorbic acid, Lubao fine salt, ethoxyquin, citric acid, Kemieling, Chumeijing, sodium diacetate, dimethyl fumarate, and others. Propionic acid (sodium propionate) itself contains a certain amount of energy, can promote animal appetite, and increase feed utilization by 5%. The addition amount in compound feed is 0.1%-0.2%, and the addition amount in animal-based feed is 0.5%-1.5%. Sorbic acid is usually used within a pH range of 5-6, with an addition amount of 0.15%. The addition amount of Lubao fine salt in compound feed is 0.25%-0.4%, and the addition amount in animal-based feed is 0.35%-0.4%. The addition amount of ethoxyquin in compound feed is 0.025%-0.05%. The addition amount of citric acid in compound feed is 0.5%. The addition amount of Kemieling per ton of compound feed is 300-700 grams. The addition amount of Chumeijing in compound feed is 0.1%-0.2%. The addition amount of sodium diacetate in compound feed is 0.6%. Dimethyl fumarate has a wide range of applications. When the moisture content of the feed is below 14%, add 250-500 mg per kilogram of feed; when the moisture content of the feed is above 15%, add 500-800 mg per kilogram of feed.
2. Low-temperature mold prevention: Controlling the storage temperature of feed within a range unsuitable for mold growth can also achieve the purpose of mold prevention. A natural low-temperature method can be used, that is, reasonable ventilation at the appropriate time to lower the temperature with cold air. A freezing preservation method can also be used, in which the feed is frozen and then kept insulated and sealed, and stored at low temperature or frozen. Low-temperature mold prevention must be combined with drying mold-prevention measures to achieve better results.
3. Controlled-atmosphere mold prevention: Mold growth requires oxygen, and as long as the oxygen content in the air is above 2%, molds can grow. Controlled-atmosphere mold prevention usually adopts methods such as creating oxygen deficiency or filling in gases such as carbon dioxide and nitrogen, controlling the oxygen concentration below 2%, or controlling the carbon dioxide concentration above 40%.
4. Radiation mold prevention: Molds are sensitive to radiation. According to experiments, after feed is treated with gamma-ray radiation and placed in an environment at 30°C and 80% relative humidity, no mold grows. In order to completely eliminate molds in feed, the method of irradiating feed with rays can be used.
5. Bagged mold prevention: Using packaging bags to store feed can effectively control moisture and oxygen and play a mold-prevention role. A new type of mold-prevention packaging bag developed abroad can ensure that newly packaged feed does not become moldy for a long time. This packaging bag is made of polyolefin resin and contains 0.01%-0.05% vanillin or ethyl vanillin. It not only prevents feed from becoming moldy, but also has a fragrant aroma and enhances the palatability of the feed.
6. Chemical mold prevention: Molds are everywhere. Therefore, no matter what kind of feed it is, as long as the moisture content exceeds 13% and the feed is stored for more than 2 weeks, a mold inhibitor should be added before storage. Optional agents include propionic acid, sorbic acid, Lubao fine salt, ethoxyquin, citric acid, Kemieling, Chumeijing, sodium diacetate, dimethyl fumarate, and others. Propionic acid (sodium propionate) itself contains a certain amount of energy, can promote animal appetite, and increase feed utilization by 5%. The addition amount in compound feed is 0.1%-0.2%, and the addition amount in animal-based feed is 0.5%-1.5%. Sorbic acid is usually used within a pH range of 5-6, with an addition amount of 0.15%. The addition amount of Lubao fine salt in compound feed is 0.25%-0.4%, and the addition amount in animal-based feed is 0.35%-0.4%. The addition amount of ethoxyquin in compound feed is 0.025%-0.05%. The addition amount of citric acid in compound feed is 0.5%. The addition amount of Kemieling per ton of compound feed is 300-700 grams. The addition amount of Chumeijing in compound feed is 0.1%-0.2%. The addition amount of sodium diacetate in compound feed is 0.6%. Dimethyl fumarate has a wide range of applications. When the moisture content of the feed is below 14%, add 250-500 mg per kilogram of feed; when the moisture content of the feed is above 15%, add 500-800 mg per kilogram of feed.