Due to the large increase in the price of feed ingredients in the recent period, some illegal elements, driven by interests, adulterate feed ingredients, and revise adulteration techniques, making it difficult to determine the quality of raw materials and cause chicken feed intake on the market. High and low egg weight, slow growth of pigs, prolonged slaughter and other issues. In order to control the quality of feed, we must control the quality of raw materials. Now we introduce some common methods and identification methods of raw materials adulteration as follows: Bran is the most commonly used raw material, but the phenomenon of adulteration is also more serious, often involving talcum powder, Indica, etc., the identification of this situation, can be hand-inserted into the bran and extracted, such as the hand adhered with a white powder and not easily shaken and proved to be mixed with talcum powder, easy to shake off the residual flour, then grab the bran Hold firmly, if the bran is pure bran, and when the hand has a feeling of rising, it is mixed with rice bran. If bran has a slippery feel in the palm, then there is talcum powder. In addition, crude ash and crude protein can also be determined. Because adulterants have high crude ash content, crude protein is not enough. Animal protein fish meal adulterated with blood powder, feather powder, leather powder, meat and bone meal, peanut shell powder, etc. For this case, the fish meal can be wrapped with aluminum foil and ignited with fire, according to the odor produced can determine the quality of fish meal True and false, in addition, it is desirable to put some fishmeal in a glass, and after stirring and standing for a while, it can be observed, and the mixed sand and sand sinks to the bottom, while the peanut shell, cotton cake, etc. float on the water. For the adulteration of cotton aphid and rapeseed meal, careful identification can be made. If necessary, a magnifying glass is prepared to identify the feed ingredients under a magnifying glass, especially for the small particles at the bottom must be carefully identified. Now add color to the different colors of cotton aphid and rapeseed meal, and then dry them to make a grain, which is smaller than grain size. This kind of grain with rice hull bran and this kind of small grain is very similar to the color of cotton aphid and is generally not looked carefully. It's not easy to see, but look closely at its finely divided parts, and see the suspicious grain size take out a handful of hard pressed, ready-to-serve powder. This proves that there is fake in it. It is not easy to see the adulteration of soybean meal, such as incorporation into non- Protein nitrogen, such as urea, can be eliminated by means of authentic protein. Corn cobs and stone powder plus protein concentrate (urea formaldehyde polymer) are added to the color and granulated, then compressed into tablets and incorporated into the pods. Soybean meal tablets are very similar. It is not easy to detect if you do not look closely at the edges. However, in this case, calcium and phosphorus content can be measured, calcium and phosphorus ratios can be calculated, and crude ash can be detected as false. Therefore, it is not possible to simply measure crude protein for feed ingredients, and it must be judged by careful visual inspection and measurement of crude ash, calcium, and phosphorus. The competition of feed enterprises is becoming more and more fierce, and the average profit rate is declining. If the quality of raw materials is not controlled, the consequences are unbearable. Therefore, feed enterprises must tighten their raw material quality and prevent the invasion of adulterated raw materials. ?
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