Livestock and poultry farming, from feed contamination, often results in loss or failure of farming. Therefore, when using aquaculture feed, the following six types of pollution should be strictly :
Insect pests and pests can cause loss of feed nutrients or leave toxins in the feed. In the case of suitable temperature and high humidity, the mites are more harmful to the feed. Rodent damage not only causes loss of feed, but also causes feed pollution and spreads diseases.
Microbial contaminated feeds breed harmful microorganisms such as Aspergillus flavus, Penicillium, Gibberella and Fusarium, which produce aflatoxins, gibberellins, gibberellins and other toxins harmful to livestock and poultry. Among them, aflatoxin is the most toxic.
The anti-nutritional factors in the anti-nutritional factor-contaminated feed mainly include protease inhibitors, carbohydrate inhibitors, mineral element bioavailability inhibitors, antagonistic vitamin action factors, and stimulating animal immune system action factors. Their presence can interfere with the digestion, absorption and utilization of feed nutrients by livestock and poultry.
Harmful chemical substances mainly include three types of harmful chemical substances such as pesticide pollution, industrial “three wastes†pollution, and nutritive mineral additive pollution.
Non-nutritive additives contaminate antibiotics, hormones, antioxidants, anti-fungal agents and sedatives, which have a great effect on preventing diseases, improving feed utilization and growth rate, but if you do not strictly follow the principles of use and control the use of objects, safe use and stop At the time of the drug, the drug and its metabolites will remain in the meat, eggs, and milk, and will pollute the environment through livestock waste.
Poisonous cross-contamination processing technology generated during processing is improperly controlled. In the special processing of crushing, conveying, mixing, granulating, puffing, etc., the complex additives in the feed will undergo degradation reaction and redox reaction to form some complex compounds. . Therefore, in the process of feed processing, care should be taken to clean the equipment to avoid decomposition and residue of the feed during transportation and mixing.
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