Breeding method of rainbow trout

Abstract

The invention relates to a breeding method of rainbow trout. The breeding method mainly comprises the following steps: (1) feeding fries with a first mixed feed for 4-6 months, wherein the first mixed feed comprises a first conventional feed and a first additive, and the ratio of the first conventional feed to the first additive is 1000:(15-35); (2) breeding in the microflow under the breeding condition that the water temperature is 9-11 DEG C in the step (1), wherein the pH value is 7-8, and the dissolved oxygen (DO) value is 6.5-9.5mg / L; (3) after the feeding of the first mixed feed is finished, feeding with second mixed feed, wherein the second mixed feed comprises second conventional feed and a second additive, and the ratio of the second conventional feed to the second additive is 1000:(10-20); and (4) breeding in the microflow under the breeding condition that the water temperature is 7-15 DEG C in the step (3), wherein the pH value is 6.6-9, and the dissolved oxygen (DO) value is 6-10mg / L. The breeding method is suitable for the growth of the rainbow trout, and is capable of improving the immunity and reducing the disease rate; the mixed feeds are reasonable in nutritive proportion and are capable of improving the appetite and feed intake of fish.

Description

technical field [0001] The invention relates to a feeding method for aquatic animals in the field of animals, in particular to a feeding method for rainbow trout. Background technique [0002] Rainbow trout (rainbowtrout) is a salmon family (Salmonidae) fish, known as "water ginseng", belongs to the herring shape order, salmon family. Lives in lakes and rapids, brightly colored. There are small black spots on the body and a red band on the side of the body, like a rainbow, hence the name "rainbow trout". Also known as waterfall fish and seven-color fish. It is native to the Pacific coast of North America and in the mountain streams of California, USA. It likes to live in clear and pollution-free cold water. It mainly eats fish and shrimp. It is an alpine fish and can only grow in water temperatures below 20°C. It has high requirements for living conditions and is a delicate fish species. The body of the fish is very beautiful and well-proportioned, and there is a clear r...

AI Technical Summary

Problems solved by technology

At present, with the popularization of artificial feeding, fresh feed is the main feeding method, but the cost is relatively high, which limits the development of rainbow trout, which is very unfavorable to the growth of rainbow trout, so it is necessary to have a reasonable ratio and various nutrients. All relatively balanced high-quality compound pellet feed