Alternate culture method for ietalurus punetaus and micropterus salmoides

Abstract

The invention discloses an alternate culture method for ietalurus punetaus and micropterus salmoides. The method comprises the following steps: breeding ietalurus punetaus, namely breeding fries of ietalurus punetaus in a strengthening pond at the beginning of September in just the year, and 2 months later, transferring the fries of the etalurus punetaus into a breeding pond, starting grown fish breeding, wherein the breeding density is 2500 fishes / mu, and the grown fish breeding stage lasts for 12 months; harvesting the fish in October in a next year, and cleaning and sterilizing the breedingpond within October and November after harvesting in the next year; performing alternate culture on micropterus salmoides, namely breeding fries of micropterus salmoides in the strengthening pond within December in the year and January in a next year, in January of a next year, putting the micropterus salmoides into the pond of the ietalurus punetaus, starting grown fish breeding, wherein the breeding density is 1500 fishes / mu, and the breeding time is 7 months; and performing harvesting in August in the next year. By adopting the method, two kinds of fishes are bred at different stages, thegrowth peak periods of the ietalurus punetaus and the micropterus salmoides are staggered, then the micropterus salmoides can be prevented from massively predating the ietalurus punetaus at early breeding stages, the breeding load can be alleviated, the water body space utilization rate is remarkably and comprehensively increased, and the breeding risk can be reduced.

Description

technical field [0001] The invention relates to a rotation breeding method for channel catfish and California perch, belonging to the field of aquaculture. Background technique [0002] Channel catfish (Ietalurus punetaus) belongs to Siluriformes and Catfish family. It is native to the Americas. It has the characteristics of fast growth, wide temperature range, and strong disease resistance. Its meat is delicious and has high nutritional value. It can be marketed all year round. It is deeply loved by farmers, processing plants and consumers at home and abroad, and has broad prospects for breeding. Largemouth bass (Micropterus salmoides), commonly known as California bass and black bass, is also native to the Americas. It was introduced to my country in the early 1980s. It grows fast, adapts to a wide temperature range, and has relatively few diseases. Delicious and nutritious, easy to catch and other advantages, it has gradually become one of the main freshwater aquaculture ...

AI Technical Summary

Problems solved by technology

[0003] At present, channel catfish and California perch are mostly cultured in monoculture or polyculture with seedlings at the same time. In the early stage of culture, the seedlings are small and the time is long. The water body culture capacity has been low for a long time, resulting in a large waste of culture space resources; Ponds are heavily loaded, the water quality of aquaculture is difficult to control, and fish diseases are prone to outbreaks