Feed for Prawns: Key Nutritional and Processing Requirements

Feed formulation for prawns cannot be reduced to a single protein number or pellet specification. Species, growth stage, culture environment, ingredient availability, and feeding behavior all influence the finished diet. FAO information on Macrobrachium rosenbergii, for example, lists different protein suggestions for early postlarval/grow-out periods and later grow-out, while also noting the importance of water-stable compounded feed. For producers, that means nutritional targets and manufacturing conditions need to be developed together. Shrimp feed can require careful control of particle size, ingredient distribution, pellet integrity, and downstream screening. At FAMSUN, we approach these requirements through the relationship between formulation, processing technology, and finished-product quality.

Protein Requirements Change With Growth Stage

Protein concentration should be considered alongside the animal's developmental stage rather than treated as a universal specification. FAO's practical specifications for giant freshwater prawn grow-out diets suggest around 35% protein during the first two months after postlarvae are stocked, followed by about 30% from the third month through harvest. These figures are specific guidance for M. rosenbergii and should not automatically be transferred to other prawn or shrimp species.

Ingredient selection also affects how a formula behaves during manufacturing. Fish meal and soybean meal are commonly used protein sources, while wheat-based ingredients can contribute to binding and pellet formation. FAO examples of freshwater prawn diets include combinations of fish meal, soybean meal, wheat flour, oils, binders, and vitamin-mineral ingredients. The nutritional formula and its physical properties therefore need to be assessed together.

For prawn feed manufacturing process planning, a change in protein source or inclusion rate can alter grinding, mixing, conditioning, and pelleting behavior. Production parameters should follow the actual formulation rather than relying on a fixed recipe across different products.

Attractants And Feeding Response

Nutrient density alone does not determine whether aquatic animals consume a formulated diet efficiently. Prawns rely heavily on chemical cues during feeding, making the selection and distribution of attractant ingredients relevant to feed design. FAO materials describe the use of various animal and vegetable ingredients in freshwater prawn diets, including fish meal, shrimp meal, molluscs, and other feed materials.

Attractant inclusion should also be considered from a processing perspective. Liquid ingredients such as fish oil need to be distributed consistently through the mixture, while dry attractant materials require suitable particle preparation and mixing. Poor distribution can create differences between pellets from the same batch, even if the overall formulation is nutritionally correct.

Our approach at FAMSUN connects formulation requirements with process control. In shrimp feed production, accurate dosing and homogeneous mixing provide the foundation for subsequent conditioning and pellet formation, particularly when several active or palatability-related ingredients are included.

Pellet Size And Water Stability

Pellet dimensions should correspond with the size and feeding behavior of the target animal. FAO guidance for M. rosenbergii describes very small particles for early larval diets, including approximately 0.3 mm particles through larval day ten and 0.3–1.0 mm particles during later larval development. Grow-out products naturally require a different physical format.

Water stability presents another important consideration. Prawns feed in an aquatic environment, so feed that disintegrates too rapidly can make consumption assessment more difficult and increase nutrient dispersion. FAO specifically notes that well-bound compounded feeds can provide water stability, while gums, binders, pre-gelatinized starch, and processing techniques can contribute to this property.

A prawn feed manufacturing process therefore needs to balance pellet size with density, durability, moisture, and feeding conditions. Increasing hardness alone does not necessarily create the most suitable product; the physical structure has to match the intended application.

Screening And Process Control

After pelleting, cooling and screening become important quality-control stages. Screening separates fines and clumps from pellets within the desired size range, which is particularly useful when products are manufactured in several particle sizes. Variations in formulation or pellet strength can influence the quantity of fines generated during handling.

At FAMSUN, we provide screening solutions designed around different materials, capacities, and operating requirements. Our supplied information describes precise screening equipment supported by process design and experienced technical teams, with configurations available for aquafeed and other feed-processing applications. Components such as motors, bearings, and sensors also meet demands from both at home and abroad.

This downstream stage is directly connected to shrimp feed consistency. A formulation may meet its nutritional specification, yet excessive fines or inconsistent particle grading can still affect how the finished product is handled and delivered.

Conclusion

Nutritional and processing decisions become more useful when they are evaluated as one system. Protein requirements can shift with growth stage, attractant ingredients influence feeding characteristics, and pellet dimensions must correspond with the animals receiving the diet. Water stability then determines how well the physical structure remains intact after the product enters the culture environment.

At FAMSUN, we consider these requirements across formulation, dosing, mixing, pelleting, cooling, and screening instead of isolating one production step. Such an approach gives manufacturers more flexibility when recipes, pellet sizes, or production volumes change.

For a prawn feed manufacturing process, the practical goal is not simply to maximize protein or produce the hardest pellet possible. A more useful specification combines appropriate nutrient density, palatability, particle size, water stability, and consistent screening results. By connecting those criteria with the actual species and growth stage, producers can develop feed that is better aligned with both biological requirements and manufacturing realities.