1. Premix = vitamins + minerals + carrier; additional energy feed and protein feed need to be added.

1. Advantages and Disadvantages

Advantages: ① The cost of premix is ??low; ② The raw materials are controllable, such as corn and soybean meal are fresh; ③ It is convenient to add medicines for health care and treatment.

Disadvantages: ①The amount of labor is a bit large, resulting in increased labor costs; ②It requires inventory of raw materials, which increases capital investment and reduces capital utilization!

2. Different series proportions Composition and characteristics of premix:

Generally, 1% premix can be called core material, and the ones I see most are "1%, 3%, 4% and 5%" ” premix. To a certain extent, the smaller the formula proportion, the higher the cost performance.

0.1-0.5%.

Ingredients: vitamins, trace elements, antioxidants, antifungal agents, etc.; Features: improve feed utilization, reduce formula costs, increase growth rate, and ensure the health of livestock and poultry;

Usage : Large and medium-sized feed mills with relatively high equipment and technical level

1%, 2%

Ingredients: Based on the 0.5% series, growth promoters such as amino acids and drugs are added;

Features: Save feed protein, avoid the trouble of purchasing individual amino acids and drugs, promote growth, and prevent diseases;

Use: Feed mills and breeding plants with certain processing capabilities and technical levels

4%, 5%, 6%

Ingredients: On the basis of 1%, some protein, calcium, phosphorus, salt, etc. are added;

Features: With a complete range of additions, you only need corn, soybean meal and sub-flour to prepare high-quality full-price feed;

Use: feed mills, breeding plants and farmers

3. Premix processing Key points of the process:

(1) Particle size: When making feed additives or additive premixes, one first encounters a process problem, that is, the amount of trace active ingredients is small, which is not enough to be distributed in the full-price feed; only the Only when the volume of trace active ingredients becomes smaller can more particles be added.

(2) Carrier: Enlarge the particles of active ingredients and load the active ingredients into one body. This material is called a carrier.

(3) Type: There are two types: inorganic carrier and organic carrier;

(4) Capacity: The additive premix is ??composed of various feed additives with different capacities, so Stratification will occur. To balance this capacity difference, a suitable carrier must be selected. Organic carriers have a small capacity, while inorganic carriers have a large capacity.

(5) Adhesion: The better the adhesiveness of the carrier, the easier it is for the active ingredient to stick to it. Organic carriers have good adhesion, while inorganic carriers have poor adhesion. Vegetable oil can improve the adhesion of the carrier and eliminate static charges.

(6) Moisture content: Moisture is an important factor in the dissolution and destruction of active ingredients. The moisture content of the organic carrier must be controlled below 10%, preferably below 8%.

(7) Microorganisms carried: The fewer microorganisms attached to the carrier, the better. Corrupt and moldy plant materials shall not be used as carriers.

2. Concentrated feed = premix + protein feed; additional energy feed needs to be added

1. Advantages and Disadvantages

The advantages are: ① The price of soybean meal is high The cost can be appropriately reduced when preparing materials; ② When preparing materials, you do not need to buy soybean meal to reduce the amount of labor.

Disadvantages: ①The cost is 0.1-0.2 yuan/jin higher than that of premix; ②The protein content is low because not enough soybean meal is added, so it is suitable for feeding native pigs!

The feed particle size is moderate, which not only ensures that the feed intake of individual livestock and poultry is consistent with the nutritional level, but also prevents the occurrence of metabolic diseases and improves feed returns. The feed thickness should be: less than 1 mm for young chickens, more than 1 mm for medium-sized chickens, 2 mm for large chickens (4.5 mm for pellets), and 2-2.5 mm for adult chickens (6 mm for pellets).

The amount of concentrated feed added is only 5% or 6%, while 95% and 94% of the bulk ingredients are feed sources. The following feed quality standards are now recommended:

Corn: moisture <14%, protein >8%, aflatoxin <50ppm.

Soybean meal: moisture <12%, protein >44%, urease activity 5%-25%.

Bran: moisture <13%, protein >14%, crude fiber <12%.

Fish meal: moisture <10%, protein >55%, salt <3.5%, no salmonella, E. coli, etc.

Note: The proportion of concentrated feed in livestock and poultry diets varies according to its nutritional content. Generally speaking, it can account for 25-40%. The proportion of the diet for young poultry or young livestock is: 60% corn, 5% wheat bran, and 35% concentrate. The proportion of the diet for breeding livestock and poultry is: 65% corn, 10% wheat bran, and 25% concentrated feed.

3. Full-price feed = premix + protein feed + energy feed; processed through crushing, mixing, granulation and other processes!

1. Advantages and Disadvantages

Advantages: ① Convenient to feed; ② Low moisture content, easy to store; ③ Less waste than powdered materials.

Disadvantages: ①The cost is too high, compared with premix, it is 0.2-0.4 yuan/jin more expensive; ②The ingredients are uncontrollable because the composition of the feed cannot be seen; ③After 70-90℃ Granulation will destroy vitamins (about 50%), reduce the activity of acid and enzyme preparations by about 80%, and reduce xylanase by 90%!

Today’s recommendation: Scope of application: Longchang SJHS series single-axis double Paddle mixers are widely used for mixing powdery, granular, flaky, lumpy, miscellaneous and viscous materials in feed, grain, food, chemical, pharmaceutical, pesticide and other industries.

Working principle: There are two layers of inner and outer blades on the mixer rotor (4 large blades with special angles on the outer layer and 4 small blades with special angles on the inner layer). The large blades on the outer layer drive the materials It flips left and right in the fast flow area and moves continuously in all directions in the machine tank, so that the materials are quickly mixed evenly under the strong convective mixing effect; the small blades also greatly enhance the convective mixing of the materials in the slow flow area. These two layers of blades also enhance the mutual diffusion, shearing, and impact mixing of materials to achieve rapid and uniform mixing.