Trout farming has an important place in the aquaculture sector. Especially healthy growth and high survival rates of fry are among the critical factors for a successful production process. Therefore, there are many important issues to be considered during the installation of trout fry units. Dr Fisher provides great convenience to breeders in this process with additives that support fish health.

For a healthy trout farming, fry units must be designed, installed and operated correctly. Providing the best living conditions for fry increases their growth rate and minimises the risk of disease. Here are the main points to be considered during the installation of trout fry units:

 

1. Water Quality and Source

Water quality is one of the most important factors for healthy growth of trout fry. The water to be used must be clean, rich in oxygen and free from chemical pollution.

Water temperature: The ideal water temperature for trout fry is between 10-15°C. Temperature changes can adversely affect fry growth and increase the risk of disease.

Oxygen level: High oxygen levels support the fry's metabolism and accelerate their growth. Dissolved oxygen levels should not fall below 7 mg/L.

pH balance: The pH level of the water should be between 6.5 - 8.0. Sudden pH changes can threaten the health of fish.

Ammonia and nitrite levels: There should be no accumulation of ammonia and nitrite in the water. These harmful substances need to be measured regularly and balanced using biological filters.

2. Pond or Tank Design

It is of great importance that the environment in which trout fry live is ergonomic, hygienic and easy to manage. The following points should be considered in the design of the fry units:

 

Round tanks: Round tanks are generally preferred for regular water flow and to avoid dead zones. These tanks improve water circulation and provide a more homogeneous feeding of the fish.

Depth and volume: Fry ponds should be designed in accordance with the fish density. Sufficient surface area and water volume per fish should be provided.

Flow control: Water flow should be appropriate for the development of the fry. Excessive current stresses the fish, while insufficient current can lead to oxygen deficiency and waste accumulation.

3. Nutrition and Probiotic Use

The correct feeding programme is essential for the healthy growth of juvenile trout. High quality feeds should be used and the feeding programme should be adjusted according to the age and growth rate of the fish.

 

Feed quality: High protein, high digestibility feeds should be preferred.

Feeding frequency: Feeding should be done frequently and in small amounts as the young grow fast. Feeding 6-8 times a day is recommended.

Probiotic additives: Probiotic-based additives developed by Dr Fisher support the intestinal flora, facilitate digestion, increase feed efficiency and strengthen the immune system.

4. Disease Prevention and Quarantine Process

The risk of disease in juvenile fish is quite high. Taking necessary precautions against bacterial, viral and parasitic diseases is important to prevent production losses.

 

A quarantine process should be applied for newly arrived fry. They should be kept under observation in a different tank for at least 2 weeks.

Regular health checks should be done. When symptoms such as sudden colour change, swimming disorder or loss of appetite are observed in fish, expert support should be sought.

Natural solutions should be used for water disinfection. It is possible to improve water quality with probiotic-based additives instead of chemical disinfectants.

5. Waste Management and Water Exchange

Water pollution should be controlled in puppy units. Fish waste and feed residues can cause diseases by reducing water quality. For this reason:

 

Water should be changed regularly. Approximately 10-20% of the water should be renewed daily.

Filtration systems should be used. Water should be cleaned with biological, mechanical and UV filters.

Wastes should be cleaned after feeding. The amount of feed should be adjusted carefully as excess proteins in the feed may contaminate the water.

The installation of trout fry units is of great importance for fish health and production efficiency. A healthy production process can be ensured by paying attention to factors such as water quality, proper pond design, correct feeding programme, disease control and waste management.

 

Dr Fisher's probiotic-based additives support the gut health of fry, accelerating their growth and helping to strengthen their immunity. With the right setup and effective management, it is possible to raise healthy and fast growing trout fry.