First, the choice of vitamin feed
The choice of vitamin feed should be determined according to the purpose of its use, production process, comprehensive consideration of the stability of the preparation, processing characteristics, quality specifications and price. Generally used in the production of premixed materials, production conditions, technical strength, can choose pure or pharmaceutical grade preparation; poor production conditions, no pretreatment process, equipment, should try to choose good stability, moderate mobility A low-content, protected, pretreated product; if used to produce liquid feed or canned pet food, a water-soluble preparation must be selected.
Second, the compatibility of vitamin feed
When producing premixed materials, attention should be paid to the combination of raw materials (including carriers), especially when producing high-concentration premixed feeds, according to the stability of vitamins and the characteristics of other ingredients, reasonable mix, pay attention to incompatibility. To reduce the loss of vitamins during processing and storage. In general, most vitamin supplements are unstable to trace element minerals. Under conditions of high humidity or high water content, the stability of vitamins to various factors is reduced. Therefore, it is necessary to avoid the coexistence of vitamins and minerals. Avoid coexisting with hygroscopic choline chloride at the same time. When selecting the product "multidimensional", pay attention to the vitamin type. If one or a certain type of vitamin is not included, it must be added separately. "Dimensional" often does not contain choline chloride and vitamin C, and some products lack biotin, pantothenic acid and so on. In addition, when anti-coccidial drugs (such as amprolium) against vitamin B1 are added to the feed, the amount of vitamin B1 should not be excessive. If the vitamin B1 content per kilogram of diet reaches 10 mg, the anticoccidial effect will be reduced.
Third, the method of adding vitamin feed
Different vitamin feed products have different characteristics and different methods of addition. Generally dry powder feed or premix, powder can be directly added to the mixer for mixing. When the concentration of the vitamin preparation is high, the amount of addition in the feed is small or the fluidity of the raw material is poor, it should be diluted or pretreated, and then added to the main mixer for mixing. The addition of the liquid vitamin preparation must be sprayed into the mixer by the liquid addition equipment or processed first to become a dry powder. For some vitamins with poor stability, when adding pellets or puffed feeds, the method of adding granules, puffing and cooling, and then spraying on the surface of the granules can reduce the loss of vitamins. Fourth, the packaging of vitamin feed products storage vitamin feed products should be sealed, water-proof packaging, vacuum packaging is better. Vitamin feed products need to be stored in a dry, dark, low temperature condition. High-concentration single-vitamin preparations can generally be stored for 1 to 2 years. Vitamin premixes containing no choline chloride and vitamin C are not more than 6 months. Compound premixes containing vitamins are preferably not more than 1 month. More than 3 months. All vitamin feed products should be used up as soon as possible after opening.
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