Artificial tylorrhynchus heterochaeta propagation method

Abstract

The invention belongs to the field of aquaculture, and particularly relates to an artificial tylorrhynchus heterochaeta propagation method. According to the method, the steps of parental tylorrhynchusheterochaeta culture, insemination, incubation, nurturing, breeding and the like are adopted, the process is simple, the time efficiency is high, and the survival rate and the yield are high; feedingis scientific, firstly, fermentation products are adopted for feeding according to the development characteristics of tylorrhynchus heterochaeta, and after the tylorrhynchus heterochaeta grows to a certain stage, special feed is used for feeding, so that enough nutrients are provided for tylorrhynchus heterochaeta growth; mannan oligosaccharide and a bamboo shoot shell extract are adopted as antibacterial agents, so that the problems are solved that antibiotics easily cause cultured organisms to generate drug resistance, the antibiotics are left in the tylorrhynchus heterochaeta bodies, and the purpose of microecologics storage is achieved.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for artificially propagating grass insects. Background technique [0002] Grass insects are scientifically known as Nereis verrucosus, and they belong to Invertebrate Annelids, Polychaetes, Migratory orders, Nereisidae, and Nereis genus Verrucosia in terms of systematic classification. Grass insects are also called Cordyceps sinensis in water. It is regarded as a delicacy on the plate, and has the medicinal effects of nourishing the spleen and stomach, nourishing qi and blood, diuresis and swelling. The Pearl River Delta region has always been rich in grass insects. In the 1950s and 1960s, hundreds of catties of grass insects could be caught at a time. In recent years, the ecological environment of grass insects has been destroyed due to the deterioration of the aquatic environment, pollution of farming pesticides, and large-scale manual fishing. Its natural popula...

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Problems solved by technology

[0003] Chinese patent CN100420373C discloses a method for cultivating clamworms, which includes selection and design of seedling farms, selection of cultivation mud and water in breeding tanks, preparation before fertilization, seed selection, fertilization, stocking, and feeding A method for artificially cultivating Nereist worm, but this method does not optimize the design of the feed for feeding Nereist worm seedlings, so it may further affect the growth and reproduction of Nereist worm

[0004] Chinese patent application CN106359208A discloses a method for aquaculture of semi-artificial fry of grass insects, including the steps of selecting parents, artificial insemination, artificial hatching, preparation of nursery ponds, artificial breeding and intensive cultivation, and helps to desalinate and feed in stages. Grass worms have just passed the larvae stage, but the feed used for grass worms is relatively simple and basically does not add auxiliary materials, which will also limit the growth and development of grass worms to a certain extent and affect the yield

[0005] The successful synthesis of antibiotics and their use as fish feed additives can control the growth of bacteria in a short period of time and improve the survival rate, but it can lead to the resistance or resistance of microorganisms in and out of the fish to antibiotics, and the increase in dosage will increase the cost of farming. The increase will also affect the meat quality of aquatic products. Finding feeds suitable for the nutritional needs of grass insects at all stages of growth to increase the survival rate of grass insects, the output value per mu and the quality of meat is a difficult problem in the field of artificial breeding of grass insects.