So how long is the breeding cycle of rainbow trout? The following one to understand.
Rainbow trout, also known as waterfall fish, seven-color fish, is an important cold water fish widely cultured in the world, with a short growth cycle, low cost, good meat quality, many areas of our country are farmed.
So how long is the breeding cycle of rainbow trout? The following one to understand.
How long is the breeding cycle of rainbow trout?
Rainbow trout in 1 year and 3 months or so, rainbow trout growth cycle total **** is divided into five stages, the first stage is the egg period, that is, the embryonic development period, usually 30 days to 46 days; the second stage is the baby fish period, the time is 20 days; the third stage is the period of juvenile fish, the baby fish period after the five-month period of the period of juvenile fish; the fourth stage is the year of the fish, five months after the first year for the year of the fish; fifth The fifth stage is adult fish, usually refers to 15 months later, weighing more than 1 pound of fish, this time can enter the market sales.
Rainbow trout artificial culture method technology
1, farm selection
The water temperature of the breeding pond is generally required to be above 4 ℃ in winter, and no more than 20 ℃ in summer, the rainbow trout can be feeding and growing on an annual basis.
The pond should be a flowing pond with fresh water, high transparency, sufficient oxygen, and the water does not contain any toxic or harmful substances.
2, farm construction
Ponds can be earth or cement ponds, the pool bank should be 20 centimeters to 30 centimeters 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, feeding management
The beginning of feeding need to pay attention to the bait spread all over the water, to be fed two weeks later, you can spread the feed to the fish more places.
The more commonly used opening bait for young fish are egg yolks, livestock liver, fresh fish, dried fleas or brewer's yeast, etc. Currently, more artificial feeds are used.
4, water temperature management
Rainbow trout is a cold water fish, it is suitable for the water temperature can not exceed 25 degrees, the most suitable for rainbow trout growth of water temperature in the 16-18 degrees, if it is lower than 8 degrees or higher than 20 degrees, the rainbow trout's growth rate will be significantly reduced, more than 25 degrees will stop eating, death within a week.
When it comes to high temperatures in summer, you should never use ice water to cool down, you should extract well water for water exchange to cool down, and in winter, you should also keep warm appropriately.
Keeping the pool water between 16-18 degrees all the time can accelerate the growth of rainbow trout as well as the utilization rate of feed.
Rainbow trout is a recently emerged culture program in China, due to the rainbow trout has rich nutritional value, and its meat more spiny, soft, fishy flavor and so on the advantages of a lot of restaurants of high-grade edible fish.
The growth cycle of rainbow trout is also relatively short, and the cost is not high, so it is very popular in the market, attracting a lot of farmers to farm.