Litopenaeus vannamei culture method with low bait coefficient

Abstract

The invention discloses a Litopenaeus vannamei culture method with the low bait coefficient. The method includes the following steps that 1, one aerator is arranged per mu, a laser emitting device is installed every 300 square meters, an ultrasonic generation device is installed every 100 square meters, water flows in, and the pH value and transparency are controlled; 2, shrimp larvae are put; 3, a nutrient enrichment material is fed on the first to fifth days after the shrimp larvae are put; 4, feedstuff for the mouth-open period stops being fed on the sixth day after the shrimp larvae are put, and a fitness material replaces the feedstuff for the mouth-open period to be fed for 20-35 days; 5, the fitness material and a meat increase material are mixed to be uniform according to the mass ratio of 1:0.5, and the mixture is fed for 6-10 days; 6, the fitness material and the meat increase material are mixed to be uniform according to the mass ratio of 1:1, and then the mixture is fed. The method has the advantages that the bait coefficient of Litopenaeus vannamei is remarkably reduced, the survival rate and per mu yield are effectively increased, and individuals of the Litopenaeus vannamei are longer and heavier within the same culture time.

Description

technical field [0001] The invention relates to the field of culture of Penaeus vannamei. More specifically, the present invention relates to a culture method of Penaeus vannamei with low bait coefficient. Background technique [0002] Penaeus vannamei, whose scientific name is Penaeus vannamei, belongs to the phylum Arthropoda. It is a wide-temperature and wide-halt tropical shrimp. It looks exactly like Penaeus sinensis and Penaeus megi. Its average life span can exceed 32 months. Thin, the normal body color is light blue-gray, the whole body has no markings, and the legs are often chalky, so it is called white-limbed shrimp. The meat is delicious and has high economic value. [0003] At present, Guangdong, Guangxi, Fujian, Hainan, Zhejiang, Shandong, Hebei and other provinces or autonomous regions have gradually promoted farming. The vannamei cultured in Yangjiabo Town, Hangu District, Tianjin is world-famous and has the reputation of "the hometown of fish and shrimp in ...

AI Technical Summary

Problems solved by technology

[0005] But at present, in order to pursue high yield and shorten the breeding cycle, the bait coefficient of Penaeus vannamei grown to reach the market size of prawns is generally high, and the economic profit decreases. Moreover, too much bait will also cause water pollution, which will have a negative impact on subsequent re-culture. Therefore, it is urgent to develop a culture method of Penaeus vannamei with low feed coefficient

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