High-density breeding method for early juvenile fishes of brachymystax lenok

A breeding method and technology of lemur salmon, which is applied in the field of early larval salmon cultivation, can solve the problems of high disease incidence, low breeding efficiency, and low breeding density, so as to reduce the incidence of disease and reduce the amount of fish medicine used , The effect of simple breeding management

Pending Publication Date: 2022-07-15
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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Problems solved by technology

[0003] The present invention provides a high-density cultivation method for early larvae juveniles in order to solve the problems of low breeding density, low breeding efficiency, high incidence of disease, low survival rate, and slow growth of existing lepidoptera juveniles

Method used

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  • High-density breeding method for early juvenile fishes of brachymystax lenok
  • High-density breeding method for early juvenile fishes of brachymystax lenok
  • High-density breeding method for early juvenile fishes of brachymystax lenok

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specific Embodiment approach 1

[0008] Embodiment 1: The high-density cultivation method of the early juveniles of the Salmon in this embodiment: The method of high-density cultivation of the early juveniles of the Salmon: Put the early juveniles of the Salmon into the breeding tank 1 in the recirculating aquaculture system for Feeding, the feed to be fed is composed of 12-16 parts of fat components and 45-48 parts of protein components according to the weight ratio, and the water temperature in the recirculating aquaculture system is 10-12 °C; the filtration system in the recirculating aquaculture system Including the water treatment system 6 and the biological filtration treatment system 5, the effluent of the filtration system enters the breeding tank 1 through the disinfection system 3, and the return water discharged from the breeding tank 1 is sent to the water treatment system 6 and the biological filtration treatment system respectively through the return tank 7. 5; the water treatment system 6 is pro...

Embodiment 1

[0018] Embodiment 1 utilizes the method of the present invention to cultivate the early juveniles of Salmonella chinensis. During the cultivation process, the feeds fed are respectively the first group, the second group, the third group and the fourth group. These four groups are respectively the first, second, third and fourth groups. The feed formula and biochemical composition are shown in Table 1, and the incubation time is 35 days.

[0019] The specific cultivation method is as follows: high-density cultivation method of the early juveniles of the truncated salmon: put the early juveniles of the truncated salmon into the breeding tank 1 in the recirculating aquaculture system for feeding. 16 parts of fat components and 45 to 48 parts of protein components, the water temperature in the recirculating aquaculture system is 10-12 ° C; the filtration system in the recirculating aquaculture system includes a water treatment system 6 and a biological filtration treatment system 5...

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Abstract

The invention discloses a high-density breeding method for early juvenile fishes of brachymystax lenok, and relates to a breeding method for the early juvenile fishes of brachymystax lenok. The method solves the problems of low breeding density, low breeding efficiency, high disease incidence, low survival rate and slow growth of the existing early juvenile fish of brachymystax lenok. The high-density breeding method for the early juvenile fishes of the brachymystax lenok comprises the steps that the early juvenile fishes of the brachymystax lenok are put into a breeding tank in a circulating water breeding system to be fed, feed for feeding is composed of a fat component and a protein component according to the weight part ratio, and the water temperature in the circulating water breeding system is 10-12 DEG C; a filtering system in the recirculating aquaculture system comprises a water treatment system and a biological filtering treatment system. According to the method, the breeding density of the early juvenile fish of the brachymystax lenok is increased to 40 kg / m < 3 > from the upper limit density 19.20 kg / m < 3 > of an original running water breeding system, the morbidity is effectively reduced, the survival rate exceeds 95%, the growth speed is increased by 40%-50%, the fat content of a feed formula is reduced to 12%-16% from 20% or above of commercial feed, and the use amount of grease such as fish oil is reduced.

Description

technical field [0001] The invention relates to a method for cultivating early juveniles of fine-scale salmon. Background technique [0002] Brachymystax lenok (Brachymystax lenok) is a rare and precious indigenous salmonid fish in my country. The wild group is a national second-class protected animal. It belongs to the genus Brachymystax lenok and lives in alpine freshwater waters. Because of its tender meat, delicious taste, rich nutrition, and no intermuscular spines, it is favored by consumers. In recent years, due to overfishing, deterioration of the living environment, and habitat loss, the population of Salmonella chinensis has declined sharply and is in an endangered state. At present, the whole artificial breeding technology of the truncated salmon has made a breakthrough, but the early juveniles (1-50g) of the truncated salmon generally suffer from low breeding density, low breeding efficiency, high disease incidence, low survival rate, slow growth, etc. The prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A01K63/04A01K63/00A23K50/80A23K20/158A23K20/147
CPCA01K61/10A01K63/045A01K63/003A23K50/80A23K20/158A23K20/147
Inventor 刘洋韩世成霍堂斌刘红柏常洪淼马淑伟吕伟华佟广香吴文化王常安陆绍霞
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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