During the cultivation of loach fry, the quality of the starter feed directly impacts their survival rate and growth rate. In freshwater fish feed production lines, specialized starter feed production equipment for loach fry must balance nutritional balance, pellet palatability, and water stability. The design and selection of this equipment must meet the demands of large-scale production while also adapting to the unique feeding habits of loach fry.
Loach fry enter their feeding phase 7-10 days after hatching. During this period, their digestive systems are not fully developed, and they have high requirements for the physical form and nutritional content of their feed. Ideal feeds should have the following characteristics:
- Fine particles: Particle size is typically controlled between 50-200 microns, making them easy for the fry to consume;
- Water stability: They must remain stable in water for 2-4 hours without disintegrating, minimizing water pollution;
- High protein content: A crude protein content of 45%-50% is recommended, with fish meal, soybean meal, and other ingredients as the primary ingredients;
- Appetite: Yeast extract or amino acids should be added to increase feeding efficiency.
| Capacity |
15-20t/h |
| Range of application |
large commerical feed factory,could make chicken,sheep,cow,shrimp feed |
| Workers requirments |
4-5 people |
| Shipment requirments |
6*40ft container |
| Product advantages |
Fully automatic intelligent batching, computer control system with stable output, efficient and continuous operation, labor saving, direct packaging, particle size can be selected from 1-12mm. |
| size for whole line |
According to land size and layout |
A complete set of loach seedling starter feed production line usually includes the following key equipment:
(1) Raw material pretreatment system
Including grinder and screener. The raw materials need to be ultra-finely ground to 80 mesh or above to ensure fine particles. The screening process can remove impurities and ensure the purity of the raw materials.
(2) Mixer
A double-shaft paddle mixer is used, and the coefficient of variation of mixing uniformity is ≤5% to avoid nutrient stratification. The temperature must be controlled not to exceed 40℃ during mixing to prevent the loss of heat-sensitive ingredients (such as vitamins).
(3) Conditioner
The starch is gelatinized by steam heating to improve the cohesiveness of the feed. The conditioning temperature is usually set to 85-90℃ for 20-30 seconds. Excessive temperature will cause protein denaturation.
(4) Extruder
Use an extruder with a low shear screw design to avoid destroying the nutrients. The density of the extruded feed is controlled at 0.3-0.5g/cm³ to facilitate the suspension feeding of loach seedlings.
(5) Drying and Cooling System
A multi-layer belt dryer is used with temperature control in stages (60°C → 50°C → 40°C) to prevent cracking of the feed caused by high temperatures. The moisture content after cooling must be ≤10% to extend the shelf life.
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