I. Selection and breeding of antibacterial feed crop varieties. Different forage crops have different susceptibility to moulds. Therefore, the selection and breeding of antibacterial forage crop varieties can reduce the damage of moulds, which is also a direct way of feed anti-mildew. The gradual expansion of the application of biological genetic engineering, can be cultivated?
Second, choose scientific planting and harvesting techniques. Experiments have shown that 80-90% of Aspergillus flavus isolated from peanut can produce mycin, which is higher than Aspergillus flavus isolated from other crops. Therefore, in the plots where peanuts are continuously planted, peanuts are highly contaminated by Aspergillus flavus, and their aflatoxin content is also high. Broken peanuts are likely to contaminate Aspergillus flavus, which also facilitates the production of phytotoxin, if the rotation is adopted. Planting techniques and scientific methods of harvesting can reduce mycotoxin's staining. In addition, pests, gnawing, and grinding should be avoided as much as possible during harvesting, storage, and transport to avoid damage to the epidermis and the outer shell of cereals such as corn and peanuts. The broken kernels should be removed.
Third, strictly control the moisture content of stored feed. The main factors causing moldy feed are humidity, temperature and oxygen concentration. If you can control the humidity, you can effectively prevent moldy feed. Under normal circumstances, keeping the moisture below the safety line is the easiest way to store it, so the feed crop should be dried quickly after harvesting. Once dry, it must be consistent. Water in rice should be controlled below 13%, corn below 12.5% ​​and peanut below 8%.
Fourth, improve storage conditions and inhibit mold growth. Most of feed mildew occurs during storage and transportation. Therefore, the use of anti-mildew technology during storage and transportation is an important measure to prevent mildew in feed.
1. Physical anti-mold law. Mainly include: control the temperature of the storage environment, sealed oxygen storage, controlled atmosphere storage, low temperature ventilation storage and radiation method. According to the experiment, the threshed corn is put into a lined plastic bag, and the bag is fully filled and tightly closed. Due to the respiration of corn itself, the oxygen in the bag is consumed. Not only is it difficult for aflatoxin to grow, but other molds are also limited, and it is an economical and simple method for preventing mold. Now commonly used low-temperature ventilation storage method, the combination of low temperature and mechanical ventilation, so that the feed below the safe moisture content, not only for pellet feed, but also for the higher moisture content of the powder, the application effect is also more obvious. With the development of food radiation technology, radiation treatment will be applied to the storage of feed.
2. Chemical anti-mold law. It is the addition of fungicide in the feed. This method is suitable for dry feed production enterprises. As a fungicide for feed, it must not only have the effect of inhibiting mold, but also be harmless to humans and animals. It is easy to use, reliable and inexpensive. Commonly used as antifungal agents are propionic acid and its salts, sorbic acid and its salts, sodium diacetate, ethoxyquin, fumaric acid, hydrogenoacetate, gentian violet, dimethyl fumarate, etc. . At present, feed production companies use the most amount of propionic acid and its salts, followed by sorbic acid and its salts. For example, Acetate treatment: The main effect of acetic acid is to inhibit the biosynthesis of AF (succinate aminotransferase). The acetic acid is formulated into a 9-15% aqueous solution. The solution is added according to 3.5% of the fresh peanuts. It is thoroughly stirred and mixed with peanuts and stored in polyethylene bags at 28-30°C and 100% relative humidity for 90 days. No AF biosynthesis.
3. Comprehensive method. Enzymes and antioxidants are used as anti-mold agents. In recent years, the international community has seen a lot of men, women, men, women, men, women, men, women, men, women, men, women, men, women, men and women. With irrigation, you need to get a share of your money. (14) The key words are: 璋 趸 璋 跗 跗 跗 跗 跗 跗 跗 佣 佣 佣 佣 咕 咕 咕 咕 咕 咕 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 埽 埽 埽 埽 埽 埽 埽褂 褂 拿 拿 敢 敢 咕 咕 咕 咕 咕 咕 咕 咕 咕 咕 咕 咕 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 As a result, mold can not get enough oxygen, thus inhibiting its growth. Molds will not be resistant to this anti-mold agent, and they will be safe and reliable, with no adverse effects on the outside world.
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