What are the feed detoxification processing technologies?
First, the physical method
1. The screening method uses mechanical or manual methods to screen the feed and remove the mildewed feed; then the unmutaged feed is further dried to achieve the purpose of mold and mildew resistance.
2. Rinsing method For the granular raw materials such as corn and soybean, rinse with water or repeatedly rinse with 2% lime water to remove mycotoxins.
3, heat treatment method for cake materials, baking at 150 degrees for 30 minutes or microwave heating for 8 to 9 minutes, can make 48% ~ 61% aflatoxin B1 and 32% ~ 40% aflatoxin G1 was destroyed.
Second, the chemical method
1. Ammonia treatment The moldy feed is sealed in a fumigation tank or a plastic film bag to make the water content above 15%, and can be fumigation with ammonia for 10 hours. The toxic method of soybean powder is: adding 2% urea as urease zymogen in soybean powder at a relative humidity of 50%, and sealing for 10 hours, can destroy more than 70% of aflatoxin B1.
2. The main component of clay or zeolite treated clay and zeolite is aluminosilicate. The aluminosilicate can be selected to bind to aflatoxin B1, and in aqueous solution, it has an adsorption rate of more than 80% for the toxin. A common method is to add 0.5% clay or zeolite to the feed to promote the growth and development of livestock and to remove mycotoxins.
3. Quicklime treatment Add 5% of quicklime to moldy pig feed, and the detoxification rate is 90%-99%.
Third, biological methods
Fermentation with lactic acid bacteria, using aflatoxin B1 to convert to less toxic B2 under the catalysis of the enzyme. Treating the feed in this way not only reduces the toxicity of the mycotoxins in the feed, but also increases the feed nutrients (bacterial proteins). Improve palatability. It should be noted that the above treatment method is only applicable to mildly mildewed feeds, which must be mixed with other feeds after treatment and prohibited from being used as the main feed. For severely mildewed feed, it should be completely discarded.
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