Trout farming is a profitable business?

The last decade was marked by growthinterest in fisheries. A lot of representatives of small business with success are engaged in cultivation of various kinds of fishes in rented reservoirs. Among the valuable species of salmon that can be bred artificially, trout is among the first. This fish, which has dietary meat with a delicate taste, also considered an environmentally friendly product, is in great demand among buyers. Therefore, trout breeding is becoming more common and very profitable business.

Classification of trout is difficult for a number of reasons and conditionally it is divided into two types: stream and rainbow. In fish farms, most often breeding rainbow trout, which is probably notonly in cold flow channels, but also in warm water bodies. For the cultivation of this species of fish, large areas of land are not required. The only condition for its successful withdrawal and growth is pure and oxygen-filled water, with sufficient transparency and illumination.

Trout breeding has its own distinctivefeature: the incubation of eggs and the growth of young animals occurs only at a constant temperature of water. Optimal is the temperature regime from 15 to 18 degrees. In this case, in the presence of natural food, trout grows constantly: the yearlings reach 30 grams of weight, the yearling is already 100-120 grams, and two-year-olds can weigh more than 200 grams.

With a fairly good fecundity of females (800 to 3000 eggs) Trout breeding is possible only byforced fertilization of caviar, since trout does not swarm in artificial reservoirs. The process of insemination is as follows: for mature females in large capacity, the eggs are decanted. Then comes the turn of "milking" of male producers. The milk obtained as a result of this process is thoroughly mixed with caviar in a dry or semi-dry manner. If the caviar is mixed with sperm already diluted in water, then this is a semi-dry method of fertilization. In the dry process, insemination products are first mixed, and then water is added to this mass, and again subjected to stirring.

Artificially-fertilized caviar is sent tohatchery. In addition to caviar, there are also larvae that have been hatched. When the larvae grow to fry, then they, as well as the producers during spawning, are transplanted. Also come with trout. The further method of cultivation depends on the chosen technique: in swimming pools or cages.

The first method achieves the bestresult, since this is an option for intensive cultivation (output of products is more than 75 kg per 1 cubic meter). However, it is extremely time-consuming. Change of water for this method is made every 10-15 minutes, and its consumption is about 50 liters per minute, per 1,000 heads of trout. At the same time, the density of planting trout is about 300-350 copies per cubic meter, and fry in weight of 1 gram - from 2000 to 5000 individuals per meter in a cube.

The second method, trout breeding in cages, moreplain. Individuals are placed in kapron or metal nets, in which they grow. At the same time, the allowable density of commercial trout should not exceed 250 copies per cubic meter of water. Twice in a season in cages the juvenile is sorted.

This method requires special attention to the observance of sanitary standards for water, since the risk of death of the fish herd as a result of its contamination is increased.

If all technological andhygiene standards, trout breeding is a well-paid business. Its productivity (per 1 cubic meter) when growing young in the natural conditions of water bodies reaches 25-35, in cages - 30-35, and in pools 50-75 kilograms.