Extruding Fish Feed Pellets

Advantages of extruded fish feed pellets

Fish feed pellet is one of the most important factors in commercial fish farming, because differences may lead to increase the efficiency of different methods of feeding and feed waste. In the past decade, the use of extruded fish feed pellets to feed fish farmers increased significantly. These fish feed pellets have excellent water stability, better flying characteristics and higher energy. The main role of the fish are: to increase fish growth and feed absorption.

 

Fewer Fines of Fish Feed Pellets

Extrusion reduces 75 percent of the amount of fines which normally enters the water and ends up decaying on the bottom of the pond. 

In other words, fewer fines means: increased water stability; clearer ponds; lower fatality rates; less undesirable bacteria growth; increased conversion rates (10 - 20 percent); higher production yields; improved digestibility and reduced feed cost. 

 

Extruded fish feed hygiene quality

Ingredients cooked at high temperatures and pressures in the fish feed extruder. Therefore, it can help feed extrusion cooking destroy most pathogens and viruses, and reduce toxin levels in feed materials for sanitary treatment. In the extrusion cooking process (greater than 70 ℃) during the avian influenza virus is destroyed. In addition, the new virus in the extrusion and drying process, which can kill one minute when the temperature exceeds 75 ℃. Growth inhibitors, allergens and other anti-nutritional factors in extrusion cooking substantially inactivated.

 

Water Absorption of Fish Feed Pellets

Extrusion moisture content during processing can be controlled over a wide range, which helps to increase the water stability of the final fish feed. 

These fish feed pellets absorb more water, retains shapes for longer time and results in reduced losses of nutrients. Water Absorption and integrity after hydration is very important. It benefits pellet technical qualities and fish health. 

 

Manufacturing soft aquatic particles

Some species, such as bluefin tuna like soft particles. Extrusion process so that our fish feed pellets are very soft (water content in complete feed up to 30%), which is impossible by other methods.This is the extrusion process used to save the system aquaculture feed (16-28% of the final product in the water) to achieve. (Water activity) of less than 0.70 can be maintained at 10-12% humectant level, and by lowering the pH value of 4.0 to 4.5 so that the level of acidity in the 1-2 per cent. Mold inhibitors are also added 0.2-0.5% level in the formulation.Recent developments suggest that the soft, gelatinous aquatic pellets may be extruded with an acid bath to adjust the pH value of the alkaline out by coupling, and set or 'firm' texture and pellet integrity for processing.

Feeding fish is simple once you know how. Just make sure that the dry food you are using is well suited to the fish species, as described below. Once you have found a food that works well and are feeding the fish the right amount, begin supplementing their diet with insects, vegetables, or other nutritious foods depending on the type of fish.