CATDOLL : CATDOLL: How to farm rainbow trout?

How to farm rainbow trout?

Rainbow trout, also known as waterfall fish and seven-color fish, mainly lives in low-temperature freshwater and is one of the world's precious fish. Recently, there has been a lot of news about rainbow trout. Everyone is comparing it with salmon, and the most concerned issue is the problem of parasites. In fact, rainbow trout can still be eaten under regular processing and cooking. It is rich in nutrients and has high edible value. So how to farm rainbow trout? Today, the editor will briefly introduce the farming technology of rainbow trout to you.

Key points of rainbow trout farming technology:

1. Selection of breeding farms

The water temperature of the breeding pond is generally required to be above 4℃ in winter and not exceed 20℃ in summer, so that rainbow trout can feed and grow all year round. The pond should be a flowing pond with fresh water, high transparency, sufficient oxygen content, and no toxic or harmful substances in the water.

2. Construction of breeding farms

The pond can be an earthen pond or a cement pond, and the bank should be 20 cm to 30 cm above the water surface. The juvenile fish pond is generally 30 square meters to 90 square meters, and the adult fish pond is 100 square meters to 200 square meters.

3. Rearing of Juvenile and Current Year Fish

The stocking density of juvenile fish in the early stage is 5000 to 10000 per square meter. When the juvenile fish grow up, you can mix several feeds into a paste, cook them, make them into small particles, and sprinkle them into the water.

Feeding: When feeding, be sure to spread the bait all over the water surface. After two weeks of feeding, you can spread the feed to places where there are more fish. Commonly used baits for juvenile fish include egg yolk, livestock liver, fresh fish meat, dried Daphnia or brewer's yeast, etc. Artificial feed is currently used more often.

4. Key points for raising adult fish

Internationally, rainbow trout are generally marketed at tail weights of 150 to 300 grams. When the tail weight is 60 to 70 grams, the stocking density is 230 to 250 per square meter; when the tail weight is 100 to 150 grams, the stocking density is 100 to 150 per square meter. At the same time, the water flow rate should be increased as the water temperature rises.

The above is the breeding technology of rainbow trout. Rainbow trout is a cold water fish, suitable for growing in water at 4-20 degrees. It has high requirements for water quality, which must be clean and pollution-free, and have sufficient oxygen. During the breeding process, attention should be paid to stocking density, reasonable feed nutrition, ensuring that the bait is fresh, and avoiding feeding moldy feed, otherwise it is easy to pollute the water body and is not conducive to the growth of rainbow trout.