1) Feed additive It is a kind of substance that is added in small amounts in livestock and poultry diets to correct nutritional deficiencies caused by lack of dietary ingredients or to play a special role in the growth of livestock and poultry. Said feed additives can be divided into four categories: vitamins / trace elements, amino acids and growth and / or benefit enhancers.
2) Premix It is a composition in which one or more different trace amounts of raw materials, such as vitamins, minerals, trace elements or drugs, are mixed together, which do not contain protein feed. The amount of premix used in the feed is usually 1% or less.
3) Premixing It is composed of the above premix and constant calcium and phosphorus. The dosage is generally 1% higher, and the dosage range can be varied between 1-12%.
4) Concentrate It contains a balanced protein, trace elements and other additives. It is usually added to the feed together with grains and other raw materials, and is added in an amount of about 10-20% to meet the requirements of a balanced full-price feed.
5) The full-price feed must be all nutrients that contain a balanced balance and meet the needs of the various nutrients of the livestock and poultry.
The purpose of the premix is ​​to add a small amount of trace amounts of raw vitamins, minerals, drugs, antibiotics and other chemicals to the feed safely and accurately. The basic reasons for premixing to provide premixing are as follows:
Uniform distribution of trace amounts of raw materials in the final feed;
Overcoming the problem of insufficient weighing and mixing equipment;
Since the amount of premix used per ton of feed is kilograms instead of grams, the equipment of the ordinary feed mill can be added;
Since the premix contains all the trace raw materials, it avoids the trouble of weighing different trace materials in the feed mill;
Produce premixes in a specialized factory with special equipment and trained workers to serve all feed mills;
Avoid the use of trace raw material stocks in feed ;
Increase the turnover rate of trace raw material inventory;
Premixes used in the feed mill industry can be divided into three types: commodity premixes, in-plant premixes, and customer premixes.
Commodity premix is ​​usually a single premix of a single single trace amount of raw materials such as vitamins or drugs and a carrier produced by a pharmaceutical or vitamin company. For example, a multivitamin can be directly added to the commercial feed and stirred before use. Make one step dilution inside.
In-plant premix It refers to a diluted commercial premix or a mixture of commercial premix plus other minor materials and dilutions. In-plant premixes are generally produced by feed manufacturers, but sometimes they can be supplied to other feed mills by one manufacturer.
Customer premixes are derived from changes in the premix used in the plant. A mixture of commercial premixes and other trace materials and a dilution that meets a specific needs of a feed mill or its customer, known as customer premix.
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