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　　The basic method of pig feed recognition: smell, touch, look and taste.

　　聞：特定的飼料原料都有其有的芳香氣味，如有異味、怪味、霉變味或無(wú)味(摻假可掩蓋芳香味)就說(shuō)明飼料為假劣原料。

　　Smell: certain feedstuff materials have their own fragrant smell. If they have peculiar smell, peculiar smell, moldy taste or tasteless (adulteration can cover up fragrant smell), it means that feedstuffs are fake and inferior materials.

　　摸：因?yàn)槿梭w帶有生物電，可用手反復(fù)插入飼料原料中，再抽出抖落，如果細(xì)小物質(zhì)不易抖落，就說(shuō)明有假。

　　Touch: because the human body is equipped with bioelectricity, it can be repeatedly inserted into the feed material by hand, and then extracted to shake off. If the small matter is not easy to shake off, it means there is a fake.

　　看：①色澤是否一致。特定的飼料原料具有其固有的光澤，如果同一批原料中有顏色不同和光澤度不一樣的物質(zhì)就說(shuō)明有假;②粒度是否整齊?？摧^細(xì)小粒度的原料中是否有較整齊的細(xì)小顆?；蚴欠裼谐?xì)物質(zhì)存在，而且有一定的數(shù)量。如果有可將其破壞和特定的原料做對(duì)比，一比便知。

　　See: ① whether the color is consistent. The specific feed material has its inherent luster. If there are substances with different colors and glossiness in the same batch of raw materials, it means there is a fake; ② whether the particle size is neat. To see if there are more orderly small particles or ultrafine materials in the raw materials with smaller particle size, and there are a certain number of them. If there is a comparison between its destruction and specific raw materials, one can know.

　　嘗：特定的原料都有固定的味道，如甜、酸、澀、苦、香等，如果經(jīng)常嘗，就會(huì)知道不同;特別是石粉、沸石、砂石等一嘗便知。

　　Taste: specific raw materials have a fixed taste, such as sweet, sour, astringent, bitter, fragrant, etc. if you often taste them, you will know that they are different; especially when you taste stone powder, zeolite, sandstone, etc.

　　部分常見(jiàn)飼料原料摻假的識(shí)別方法

　　Identification method of adulteration of some common feed materials

　　豆粕 經(jīng)銷(xiāo)商常用大片麩片、稻殼、米糠等和磨細(xì)的黃土玉米(2316,-9.00,-0.39%)面混合制成細(xì)小顆粒，然后著上色做成“豆粕料”，也有單用磨細(xì)的黃土制粒著色的，摻在豆粕內(nèi)，致使豆粕粗蛋白含量降30%以下。

　　Soybean meal dealers often mix large pieces of bran, rice husk, rice bran and ground loess corn (2316, - 9.00, - 0.39%) flour to make small particles, and then color them to make "soybean meal material". There are also those that only use ground loess to make grains and color them, which are mixed in soybean meal, resulting in the crude egg white content of soybean meal falling below 30%.

　　識(shí)別：

　　distinguish:

　?、俾劊瑩接?ldquo;豆粕料”的豆粕由濃香變?yōu)榈南慊蚋緹o(wú)香味。

　?、?Smell, the soybean meal mixed with "soybean meal material" changes from strong fragrance to light fragrance or no fragrance at all.

　　②看，豆粕顏色淡黃，加熱溫度高的深黃，不摻假的光澤非常明顯，整齊劃一，而摻有“豆粕料”的豆粕整體光澤度降低，特別是“豆粕料”基本沒(méi)有光澤度;把粒度整齊，偏大的取走后，剩下細(xì)小的，然后用右手食指和拇指捏起，使勁一搓，一看便知，豆粕，即使是再細(xì)小的顆粒，用兩個(gè)手指是搓不細(xì)的。

　?、?It can be seen that the color of soybean meal is light yellow, the deep yellow with high heating temperature, and the luster without adulteration is very obvious and uniform, while the overall glossiness of soybean meal mixed with "soybean meal material" is reduced, especially the "soybean meal material" basically has no glossiness; After taking away the larger ones, the smaller ones will be left. Then, pinch them with the index finger and thumb of the right hand, and rub them hard. It will be known that the soybean meal, even the smallest ones, can not be rubbed with two fingers.

　?、蹏L，真豆粕有豆香味，而摻假的無(wú)味(玉米面、石粉等)或有泥土味(摻黃土、泥沙等)。

　　(3) taste, real soybean meal has bean flavor, and adulterated insipid (corn flour, stone powder, etc.) or earthy flavor (mixed with loess, silt, etc.).

　?、芩∵m量樣品放入大玻璃杯中，用水浸泡2小時(shí)，然后用一小棒輕輕攪動(dòng)，若有分層現(xiàn)象的，上層為豆粕、中層為玉米面(餅)、下層為黃土、鈣粉、石粉等。

　　④ Soak in water, put a proper amount of sample into a large glass, soak in water for 2 hours, and then stir gently with a small stick. If there is stratification, the upper layer is soybean meal, the middle layer is corn flour (cake), the lower layer is loess, calcium powder, stone powder, etc.

　?、莸蔚鉃?，取少量樣品放于載玻片中，在樣品上滴幾滴碘灑，1分鐘后若有物質(zhì)變?yōu)樗{(lán)黑色，就證明摻有玉米、麩皮、稻皮等。

　?、?Drip iodine, take a small amount of sample and put it in the slide, drip a few drops of iodine on the sample, if any substance turns blue black after 1 minute, it is proved that there is corn, bran, rice skin, etc.