Post-addition process introduction of thermal substance in puffed feed

LIMA Fish Feed Machine,Chicken Feed Machine

Extruded processing can passivate the anti-nutrient factor of the feed, and degenerate the protein degeneration, starch, which is beneficial to the digestion of livestock and poultry, but will also have a negative impact. GQC China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry

1. Negative impact on feed nutrients GQC China feed industry information network – based feed, service livestock

1.1 Vitamin loss temperature, pressure, friction and moisture will result Vitamin loss. US coelho reports, in the puffed feed, vitamin A, vitamin D3, folic acid loss 11%, the loss rate of ammonium monoitrate and hydrochloride ammonium is 11% and 17%, the loss rate of vitamin K and vitamin C is 50 %, The loss rate is halved in the particles. Van Der Poel reported that pig feed was stored for 1 month after puffing at 120 ¡ã C, and several vitamins with most losses were: vitamin K380%, vitamin C75%, vitamin D 25%, vitamin A and E20%.

GQC China Feed Industry Information Network – Based on Feed, Service Animal Husbandry The loss of enzyme preparation is a protein, and the feed process has an important effect on the activity of the enzyme preparation. The optimum temperature of the general enzyme is between 35-40 ¡ã C, up to 50 ¡ã C. However, the temperature in the expandable granulation can reach 120-150 ¡ã C or more, accompanied by high humidity, high pressure, under such conditions, the activity of most enzyme preparations will be exhausted. Israelsen reported that 110 ¡ã C phytosidase activity remains zero; Van Der Poel reported, 110 ¡ã C beta; – Glucoseserase and fiber vitality has not been measured; Gadient reported that amylase was significantly larger at 80 ¡ã C Degree decreased.

GQC China Feed Industry Information Network – Biped Feed, Service Animal Husbandry

The micro-organisms currently have more lactobacillus, Streptococcus, Bacillus, and yeast, these microorganisms The high temperature is particularly sensitive when the granulation temperature is over 85 ¡ã C. Since the above three types of substances have varying degrees of loss in the puffed or granulation process, therefore recently, more and more scholars abroad have carried out the process of re-adding the expanded granulation.

GQC China Feed Industry Information Network – Based on Feed, Service Animal Husbandry

2. Different post-adding methods

GQC China feed industry information network – based on feed, service livestock

[1987) reported that there will be a small amount of organisms Active substances (including vitamins, hormones, enzymes, bacteria, etc., or one of them), combined into the machined foodIn the object or feed, a substance containing biologically active is first mixed with an inert carrier into a mud, which is insoluble, then forms a uniform suspension, and the suspension is converted into a function. In the form of the pellet, a uniform layer of film is formed, covering the surface of the pellets. Lavery (1996) also reported to mix with feed particles after mixing with a viscous colloid. The particles of this covering colloid are substantially uniform, and the contamination of the mixer is also small, and its added amount is about 2-40 kg of feed per ton. These two addition methods are more suitable for producing small batch feeds or farms.

GQC China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry

2.2 Spray Add Liquid Nord (1993) Developed a liquid spray system, this system can meet feed Adding requirements of the liquid enzyme preparation after granulation. This is mainly composed of a high-precision dosage pump that exactly quantitative liquid enzyme preparations, and the company is equipped with a series of liquid enzyme preparations. Danisco (1996) also developed an enzyme spraying system that sprayed liquid enzyme preparation to a particulate feed surface, which ensures accurate and safe addition to the amount of addition, and the company is produced. A series of liquid enzyme preparations. Chevita (1998) invented a new spray application system capable of simultaneously spraying up to 4 liquid or colloidal additives on a processed feed, sprayed dose of 0.1-5 kg u200bu200bper ton. SPROUT-MATADOR (1998) also showed the trace liquid system they used to add liquid components to the particles, which can add base acid, vitamin, fragrance substances, enzymes, antibiotics, and oil-like ingredients.

GQC China Feed Industry Information Network – Based on Feed, Service Animal Husbandry

Most of these spray equipment uses a pressure nozzle to spray liquid or colloidal atomization. In general, the atomized liquid particles are small, and the surface of the feed particles is also more uniform than the surface of the feed particles or colloid is mixed. However, the nozzle of pressurized air is used. If the injection direction is incorrect, it will blow the liquid to other places. After the feed dust, it is sticking in all equipment in all equipment, which affects the production safety and hygiene, which requires good equipment. Closedness.

GQC China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry

3. Post-add point selection

GQC China feed industry information network – based on feed, service animal husbandry

The heat-sensitive substances such as the addition of enzymes can also cause loss of thermal substances, so After adding the addition point, it is generally selected to select the following 3 at the particles, and the following 3:

GQC China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry 123] 3.1 Some feed mills of the fuel injection equipment are supplied with a grease embedder, and the installation of the liquid solution system does not need to modify the process.

GQC China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry

3.2 The screw conveyor is mounted on a screw conveyor, saving equipment costs, and is mixed. The uniform effect is poor, and the variation coefficient is generally greater than 20%.

GQC China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry

3. Thirteen Machines in the Granules Cooler, such as Taiwan Chemgen’s rotary sprayer It is a barrel device, of which the central air rotating shaft is passed through the top cover until the bottom plate is close to the bottom plate, and there is an arched liquid shunt disc, which can be rotated at high speed. There is a slightly large feed turntable on which the hollow shaft is connected, and the speed is slow, and the granular feed is dropped from above the feed turntable. After being uniformly sweeping to the circumferential bolt wall, brushing liquid shunt down The outer edge of the turntable falls to the bottom plate. At the same time, the liquid is sprayed by the hollow spray in the liquid binary disk, and the centrifugal force is rotated at its high speed, and the feed rsquo; curtain rsquo; uniform sprinkler.

GQC China Feed Industry Information Network – Based on Feed, Service Animal Husbandry 4. Existing problems are not high after installation, and the process is not complicated. The disadvantage is: 1) may result in an increase in particulate powder powder; 2) Various active materials are only adhered to the surface of the feed particles, and it is easy to peel off during the transportation of the feed, resulting in loss of feed active substance; 3) activity Substance adhesion is more likely to be light, oxidative, resulting in a large loss during storage GQC China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry


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