Industrialized efficient breeding method for freshwater shrimps

Abstract

The invention discloses an industrialized efficient breeding method for freshwater shrimps. The method comprises the following steps that 1, the freshwater shrimps are stocked in an outdoor breeding tank after disinfection treatment, and the oogenesis conditions of the female shrimps are observed; 2, after the oogenesis of the freshwater shrimps is determined, oogenesis fertilization tests are carried out, the average fertilization rate is calculated, and when the average fertilization rate reaches 70% or above, the oogenesis female shrimps are transferred to a disinfected indoor aquarium fortemporary breeding in time; 3, after the female parent shrimps complete egg hatching, the female parent shrimps are stocked into the outdoor breeding tank again to prepare the next reproduction mating; 4, after eggs are hatched into nauplii, the hatching rate is calculated, and the freshwater shrimp larvae are bred; 5, when the shrimp larvae all grow into young shrimps with the body length of 8-12mm, the breeding work for the shrimps is completed, and the emergence rate is calculated. By means of the breeding method, the reproduction mating management of the parent freshwater shrimps and hatching and breeding of the young shrimps are conducted, the fertilization rate, the hatching rate and the emergence rate can be significantly increased, and the time required for the development of thelarvae in different development stages is shortened.

Description

technical field [0001] The invention relates to the technical field of macrobrachium seedling breeding, in particular to an industrialized high-efficiency seedling raising method for freshwater shrimp. Background technique [0002] Freshwater shrimp (Macrobrachium nipponense), scientific name Macrobrachium nipponense, is an important economical edible freshwater shrimp in my country. Freshwater prawns are very popular because of their tender meat, delicious taste and rich nutrition. However, the price of freshwater prawns remains high due to low yield (generally about 80-130 jin per mu) and few large-scale varieties. [0003] In addition to genetic factors, the influence of the seedling breeding process is extremely important for the low and unstable yield, small size and unsatisfactory quality of freshwater shrimp. Breeding practice has proved that the scientific breeding of broodstock during the mating and spawning period and the reasonable operation of the seed hatching ...

AI Technical Summary

Problems solved by technology

Fifth, the larvae of freshwater shrimp are tiny, so it is difficult to observe their various behaviors

[0006] Although the above-mentioned studies on the breeding of freshwater shrimp seedlings have optimized and improved the freshwater shrimp seedling breeding method from different aspects, there are many bottleneck factors restricting the scientific cultivation and large-scale seedling cultivation of freshwater shrimp, especially the larvae of freshwater shrimp are small and mobile. Poor ability and high requirements for water quality physical and chemical indicators, the above breeding methods are difficult to achieve safe and controllable cultivation in the process of cultivating freshwater shrimp seed. Therefore, a safe, visible, controllable and scientific broodstock of freshwater shrimp has been explored A new model of cultivating and hatching seedlings is imminent

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