Preventive and Remedial Measures for Moldy Feed
Feed mold is caused by fungal growth, which proliferates when the raw material humidity is suitable, leading to feed spoilage. Moldy feed undergoes changes in its physical and chemical properties, with the greatest risk posed by aflatoxin. Here are preventive and remedial measures for moldy feed:
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Preventive Measures:
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Control Humidity: Maintain feed moisture and storage environment relative humidity. Quick drying after harvesting grains is crucial to prevent mold growth.
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Control Temperature: Keeping the temperature below 12°C effectively controls fungal growth and toxin production.
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Pest Control: Mechanically or chemically treat grain storage pests and prevent rodent infestation, which can damage grains and promote mold growth.
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Use of Mold Inhibitors: Add mold inhibitors during processing to control mold growth, with organic acids and their salts being commonly used.
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Remedial Measures:
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Grain Sorting: Remove moldy grains to reduce toxin content. Mechanically or manually select and remove moldy feed, followed by further drying to prevent toxins.
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Heat Treatment: Roasting soybean meal at 150°C for 30 minutes or microwaving for 8-9 minutes can destroy aflatoxin B1 and C1.
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Water Washing: Repeatedly soaking and rinsing with clean water removes water-soluble toxins. Granular materials like soybeans and corn can be soaked and rinsed with 2% lime water to remove toxins.
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Absorption: Activated charcoal and white clay can absorb mold toxins, reducing their absorption in the digestive tract.
Feeding contaminated feed to livestock and poultry can lead to growth retardation, reduced feed intake, and digestive disorders, significantly affecting economic benefits. Vigilance and proper measures are essential for prevention.
