The Extrusion Variables Affecting Feed Production and How to Optimize Them for the Best Results

There is a famous saying: You are what you eat. The same applies to animals. There are a number of ways to produce animal feed and extrusion is arguably the best method if the right conditions are met optimizing the variables for the desired feed output.



Extrusion is a unique processing operation that uses high temperature and pressure over a short time, in which high shear forces are applied to produce a feed product with distinct physical and chemical characteristics. Understanding and predicting nutrient variability in the final feed product needs to be optimized. In this article, we will take a closer look at extrusion and its effects on livestock production. We'll also discuss how you can optimize the extrusion process to get the best results for your business.


  • How extrusion affects livestock production

  • Optimizing extrusion to get the best results for your business

  • How do the extrusion variables interact with each other and how to optimize it?

How extrusion affects livestock production

Extrusion processing can have a significant impact on the final nutritional quality of the feed. For example, extrusion can increase the digestibility of proteins and carbohydrates, while also reducing the anti-nutritional factors present in some raw materials. In addition, extrusion can also improve the physical characteristics of the feed, such as pellet size and shape, which can impact feed intake and digestibility.


The extrusion also allows for the inclusion of a variety of ingredients that may not be possible with other processing methods. This can include, for example, high levels of fat or fiber, which can be difficult to incorporate into the diet without extrusion.


Extrusion can also be used to produce a variety of specialty feeds, such as those for pets or aquarium fish. These types of extruded feeds can be very nutritionally dense, and the extrusion process can help to preserve the nutrients in the feed.


Optimizing extrusion to get the best results for your business

To get the most out of extrusion, it is important to understand the extrusion process and how it can be optimized. Extrusion is a complex process, and there are a number of variables that can impact the final quality of the feed.


Some of the key variables that need to be controlled in extrusion include:


  • Moisture content: The moisture content of the feed needs to be carefully controlled to ensure that the extruder operates under the right conditions.

  • Temperature: The extrusion process requires high temperatures, and the temperature of the extruder needs to be carefully monitored to avoid damaging the feed.

  • Pressure: The pressure in the extruder needs to be carefully controlled to ensure that the extruder operates under the correct conditions.

  • Screw speed: The screw speed needs to be carefully controlled to ensure that the extruder operates under the right conditions.

By understanding and controlling these key variables, you can optimize the extrusion process to produce a high-quality feed that meets the needs of your livestock.


How to adjust the moisture content for different feed production

The moisture content of the feed needs to be carefully controlled to ensure that the extruder operates under the correct conditions. The ideal moisture content for extrusion depends on a number of factors, including the type of extruder being used and the ingredients being extruded.


For example, twin-screw extruders typically operate best with a moisture content of 12-18%, while single-screw extruders can extrude a wider range of moisture contents.


The type of ingredients being extruded also affects the ideal moisture content. For example, corn typically requires a higher moisture content than soybeans.


To get the best results, it is important to use a moisture meter to measure the moisture content of the feed and adjust the extrusion process accordingly.


By carefully controlling the moisture content, you can ensure that the extruder operates at the correct conditions and produce a high-quality feed.


How to Control the Temperature for the Best Results in Extrusion


The extrusion process requires high temperatures, and the temperature of the extruder needs to be carefully monitored to avoid damaging the feed.


Extrusion temperatures are dependent on extruder type, extruded product make-up, moisture levels, and desired output characteristics. The temperature may be varied by up to 100 degrees Fahrenheit for advanced extruders in order to create optimal extrudate properties such as consistency or rate of cooking.


Insufficient temperature input into an extruder can result in extrudates of poor quality with low digestibility. In some cases, it may also result in an extruder shutdown due to blockage. Excessive temperatures can cause problems such as feed degradation, die swelling, and pellet softening.


It is important to carefully monitor the temperature of the extruder and adjust the extrusion process accordingly to produce a high-quality feed.


How is the pressure controlled in extrusion and what is the ideal pressure?

The pressure in the extruder needs to be carefully controlled to ensure that the extruder operates under the right conditions.


The ideal extrusion pressure depends on a number of factors, including extruder type, screw design, feed composition, and desired output characteristics.


Generally, extrusion pressure is increased as the extruder progresses from the feeder to the die. However, the exact pressure requirements vary depending on the specific extruder and feed composition.


The pressure in the extruder needs to be carefully controlled to ensure that the extruder operates under the correct conditions. The exact pressure requirements vary depending on the specific extruder and feed composition.


To reach the correct pressure, it is important to use a pressure gauge to measure the pressure in the extruder and adjust the extrusion process accordingly.


How to adjust the screw speed to optimize the extrusion process

The screw speed is another important variable that needs to be carefully controlled to ensure that the extruder operates under the right conditions.


The ideal screw speed depends on a number of factors, including extruder type, screw design, feed composition, and desired output characteristics.


Generally, extrusion screw speed is increased as the extruder progresses from the feeder to the die. However, the exact screw speed requirements vary depending on the specific extruder and feed composition.


To reach the correct screw speed, it is important to use a tachometer to measure the screw speed in the extruder and adjust the extrusion process accordingly.


How to optimize all variables including moisture, temperature, pressure and screw speed to get the best feed quality in extrusion?


The best way to do this is to use a combination of sensors and instruments to measure the extruder conditions and adjust the extrusion process accordingly.


The variables in extrusion interact with each other to produce a high-quality feed.


The moisture content of the feed affects the extruder temperature, which in turn affects the extrusion pressure. The screw speed is also affected by the extruder temperature.


It is also important to use the correct die for the extruder. The die determines the shape and size of the extrudate.


The wrong die can result in an extrudate of poor quality with low digestibility. In some cases, it may also result in an extruder shutdown due to blockage.


To get the best results, it is important to use the right die for the extruder and carefully monitor the extrusion process.


--


See the SMS Extruders solutions and how we can help you achieve your extruded feed production wherever you want to build your facility.

--


Contact us if you want to build your poultry feed, fish feed or pet food extrusion production plant of any capacity.

--


See our other blog posts with extensive information on extrusion and feed production.


© 2022 by SMS Extruders