The quality of feed is critical to the healthy development of the pig industry. However, for a long time, because of the lack of experience in recognizing the inferiority of feed ingredients in some small pig farms, pig farmers have suffered. To this end, introduce methods to identify adulterated feed ingredients.
Soybean meal
Distributors often use large pieces of bran, rice hulls, rice bran, etc., and ground loess corn flour to make fine granules, which are then colored to make “bean pods.†There are also crumbs that are simply ground and mixed in the pods, resulting in pods. Crude protein content fell below 30%.
Recognition
1. The pods mixed with “bean mash†are changed from rich scent to light scent or no scent at all.
2. Look at the yellowish color of the soybean meal and the dark yellow color after heating. No adulterated, shiny, uniform, and the overall gloss of the soybean meal mixed with "bean mash" is reduced, especially the "bean mash" is basically no gloss; after the regularity and large size of the grain are removed, the smallness remains. , And then with your right index finger and thumb picked up, hard to see, at a glance you know, even if the real pods even tiny particles, with two fingers is not perfect.
3, taste real bean pods have bean flavor, and adulteration (mixed with cornmeal, stone powder, etc.) odorless or muddy (doped with loess, sediment, etc.).
4, water immersed appropriate amount of sample into a large glass, soaked in water for 2 hours, then gently stirred with a small stick, if there is stratification, the upper layer of soybean meal, the middle layer of corn flour (cake), the lower layer of loess, calcium Powder, stone powder and so on.
5, iodine drip a small amount of sample placed on the glass, a few drops of iodine on the sample, if there is a substance into a blue and black after 1 minute, it proved to be mixed with corn, bran, rice and other skin.
Cotton wool
Mainly doped with red clay, bentonite, brown zeolite powder or gravel powder, but also useful calcium powder, all kinds of soil, bran, rice bran, rice husk processed by granulation, coloring made of "cotton pupa material."
Identification of cotton aphid due to different production areas, the processing process is not the same, resulting in the production of cotton aphid color, quality is also different, should be based on specific analysis of the specific situation, with a sensory inspection and water immersion method is relatively easy to identify, but also more accurate.
Soybean meal
Distributors often use large pieces of bran, rice hulls, rice bran, etc., and ground loess corn flour to make fine granules, which are then colored to make “bean pods.†There are also crumbs that are simply ground and mixed in the pods, resulting in pods. Crude protein content fell below 30%.
Recognition
1. The pods mixed with “bean mash†are changed from rich scent to light scent or no scent at all.
2. Look at the yellowish color of the soybean meal and the dark yellow color after heating. No adulterated, shiny, uniform, and the overall gloss of the soybean meal mixed with "bean mash" is reduced, especially the "bean mash" is basically no gloss; after the regularity and large size of the grain are removed, the smallness remains. , And then with your right index finger and thumb picked up, hard to see, at a glance you know, even if the real pods even tiny particles, with two fingers is not perfect.
3, taste real bean pods have bean flavor, and adulteration (mixed with cornmeal, stone powder, etc.) odorless or muddy (doped with loess, sediment, etc.).
4, water immersed appropriate amount of sample into a large glass, soaked in water for 2 hours, then gently stirred with a small stick, if there is stratification, the upper layer of soybean meal, the middle layer of corn flour (cake), the lower layer of loess, calcium Powder, stone powder and so on.
5, iodine drip a small amount of sample placed on the glass, a few drops of iodine on the sample, if there is a substance into a blue and black after 1 minute, it proved to be mixed with corn, bran, rice and other skin.
Cotton wool
Mainly doped with red clay, bentonite, brown zeolite powder or gravel powder, but also useful calcium powder, all kinds of soil, bran, rice bran, rice husk processed by granulation, coloring made of "cotton pupa material."
Identification of cotton aphid due to different production areas, the processing process is not the same, resulting in the production of cotton aphid color, quality is also different, should be based on specific analysis of the specific situation, with a sensory inspection and water immersion method is relatively easy to identify, but also more accurate.
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