Living microalgae composition and application thereof in nutrient enrichment artemia and litopenaeus vannamei juvenile shrimp feeding

Abstract

The invention discloses a living microalgae composition. The living microalgae composition is used for feeding artemia, litopenaeus vannamei zoea larvas and juvenile shrimps, and comprises the following components: chaetoceros gracilis and schizochytrium limacinum. The inventor finds in the test process that when the chaetoceros gracilis and schizochytrium limacinum are combined for feeding and breeding the artemia and the litopenaeus vannamei juvenile shrimps, the value of the artemia and the juvenile shrimps can be greatly improved, and it is found that when the living microalgae composition is used for feeding the litopenaeus vannamei zoea larvas, the metamorphosis rate, survival rate, malondialdehyde, total antioxidant capacity, alkaline phosphatase activity and acid phosphatase activity of the zoea larvas can be remarkably improved. The invention further discloses a specific application method of the living microalgae composition in feeding the artemia and litopenaeus vannamei juvenile shrimps.

Description

technical field [0001] The invention relates to the technical field of prawn rearing, in particular to a living microalgae composition and its application in nutritionally fortified Artemia, its application in the feeding of Litopenaeus vannamei larvae, and its application in the feeding of Litopenaeus vannamei juveniles. Background technique [0002] Litopenaeus vannamei, commonly known as Penaeus vannamei, belongs to the phylum Arthropoda and the genus Peneaeus. Its appearance is similar to that of Chinese prawns (Fenneropenaeuschinensis), with a thin carapace. The normal body color is light blue-gray. Not brindle. Litopenaeus vannamei is native to the Pacific coast to the middle of the Gulf of Mexico on the west coast. It has the advantages of fast growth, strong stress resistance, high feed utilization rate, high meat yield and significant breeding economic benefits. It is comparable to Penaeus monodon and Chinese prawns are together known as the three high-quality vari...

AI Technical Summary

Problems solved by technology

[0004] During the culture process of Litopenaeus vannamei, with the increase of culture density, there have been problems such as the degradation of germplasm resources, the deterioration of water quality, the difficulty in breeding shrimp seedlings, and the uneven quality of feed, which seriously restrict the healthy and sustainable development of the Litopenaeus vannamei farming industry. Different strains of prawn larvae have differences in their growth and disease resistance under different environmental conditions. The prawn larvae are more active from the daphnia stage to the mysis stage, grow fast and are easily affected by the external environment and the invasion of pathogenic bacteria, resulting in Low survival rate of prawn larvae

Due to the lack of timely and appropriate feeding of suitable open bait, the problem of affecting the production of seedlings is common. At the same time, most of the bait on the market has a single nutritional component, which affects the growth of prawns.

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