Method for breeding large-specification grown procambarus clarkii

Abstract

The invention discloses a method capable of improving marketable specification of procambarus clarkii. The method comprises the following breeding steps of: (1) digging circular trenches; (2) arranging escape-proof facilities; (3) cleaning a pool; (4) fertilizing and culturing bottom-dwelling bait microorganisms; (5) planting grass; (6) setting breeding specification and density of shrimps; (7) arranging micropore bottom oxygen-increasing facilities; (8) feeding shrimp feed; (9) managing water quality; and (10) shrimping by turns. The method for breeding large-specification grown procambarus clarkii is favorable of breeding large-specification grown prawns with weight of more than 60g, so that problems of small grown specification, low yield and poor breeding efficiency of procambarus clarkii in a pool breeding mode are solved. The method for breeding large-specification grown procambarus clarkii has the features of low investment, convenience in operation and management, large specification of grown commodity shrimps, high yield and good efficiency, and is suitable for large-area popularization and application in pool breeding regions and river crab breeding regions.

Description

Technical field [0001] The invention relates to a method for cultivating large-sized adult crayfish of Procambarus clarkii, which belongs to the technical field of aquaculture. Background technique [0002] Procambarus clarkii ( Procambarus clarkii ) Is a species of the crayfish family (or cricket family), commonly known as red swamp crayfish or freshwater crayfish. It is native to North America. After decades of reproduction and migration, Procambarus clarkii has now expanded to Jiangsu, my country Dozens of provinces, municipalities and autonomous regions, including Anhui, Anhui, Hubei, Zhejiang and Shanghai, have become freshwater shrimp species with larger populations in my country's natural waters. Due to the rapid increase in market consumption and export processing of Procambarus clarkii, the number of wild resources is rapidly decreasing. Therefore, increasing the production of Procambarus clarkii through artificial breeding has become an important way to meet market dema...

AI Technical Summary

Problems solved by technology

[0005] 2. The mode of stocking egg-bearing shrimp: in October, only the mated female shrimp can be released, and the male shrimp can not be released, or 15-25 kg (450-800 tails) of egg-bearing shrimp can be stocked per mu, but the egg-bearing shrimp should be transported with water. Oxygen transport, the dehydration time of egg-bearing shrimp for more than 10 minutes will cause the shrimp eggs to die due to hypoxia during the heartbeat period, and the survival rate of transport is low

[0006] 3. The mode of stocking shrimp seedlings: stocking shrimp seedlings in April, stocking 10,000-30,000 fish per mu, and starting to catch them in August, but due to the high stocking density, the killing of Procambarus clarkii is serious, resulting in low breeding production. Shrimp size is small

[0007] The above-mentioned pond culture mode includes the preparation of the pond before stocking, stocking of broodstock, self-propagation of broodstock and larvae formation, which is characterized in that organic fertilizer is sprinkled on the pond for fertilizer and water, and artificial compound feed and aquatic plants are fed until the larvae grow into commercial shrimps. The advantage of this breeding method is that it saves labor and time. Its disadvantages are: the water quality is too fertile, which can easily cause the death of Procambarus clarkii due to hypoxia and slow growth, resulting in small size of shrimp, low yield, and poor breeding efficiency. Feeding compound feed throughout the whole process leads to poor taste and flavor of shrimp

This is why the existing model of Procambarus clarkii cultured in ponds is difficult to promote

Images