8 results about "Live feed" patented technology

The present invention relates to: a feed composition for zooplankton, comprising biomass derived from Schizochytrium sp. microalgae; a method for culturing zooplankton using same; and an aquaculture method for fish or crustaceans. The biomass derived from Schizochytrium sp. microalgae of the present invention has the effect of nutritionally enriching zooplankton, and when zooplankton fed with the biomass is fed to fish or crustaceans, growth of fish or crustaceans is promoted and non-specific immunity is enhanced, and thus the biomass can be effectively used as a feed composition or a feed additive.

This invention relates to a method for the targeted cultivation of live feed to enhance the stress resistance of grouper fry, specifically a method for the targeted cultivation of grouper fry and its live feed. The live feed includes artichoke culture and rotifer culture. The targeted cultivation of the artichoke culture includes the following steps: placing artichokes in seawater, adding *Cryptospira spp.* powder, *Spirulina* powder, arginine, and *Cinnamomum camphora* oil for cultivation to obtain the artichoke culture; the targeted cultivation of the rotifer culture includes the following steps: placing rotifers in seawater, adding *Nyctaginus* pink bacteria. Natrialba pink Rotifer cultures were obtained by cultivating bacterial powder, spirulina powder, methionine, and sunflower oil. This method, through targeted cultivation of live feed, enriches the live feed with corresponding functional components. After feeding it to newly hatched juvenile scorpion, it can significantly improve the stress resistance of the juveniles and increase their survival rate, thus solving the industry pain points of slow development, low survival rate, and poor stress resistance of newly hatched scorpion scorpion.

This invention relates to the field of aquaculture technology, and more particularly to a method for large-scale grouper fry rearing based on outdoor-indoor relay rearing. The method includes: using black film ponds as outdoor hatching ponds, disinfecting and conditioning the water before controlling its quality; feeding grouper fertilized eggs in stages after hatching, adjusting the feed according to the mouth size of the fry, and preparing for transfer when 60% of the fry have a mouth size >2200μm; using PVC ponds as indoor rearing ponds, introducing water after multi-stage filtration, disinfection, and detoxification, and controlling the temperature to maintain an indoor-outdoor temperature difference of <2℃; transferring qualified fry to the indoor ponds, disinfecting them with a micro-flow of water, and then distributing them into the rearing ponds; cultivating, strengthening, and disinfecting live feed; feeding the fry in stages indoors according to mouth size, initiating feed acclimatization when 60% of the fry have a mouth size >5mm; controlling the fry density and conducting daily management. The advantages are: integrating the low-cost, large-scale outdoor operation with the high controllability of indoor rearing, improving fry survival rate and seedling quality, and meeting the needs of large-scale aquaculture.

This invention relates to the field of aquaculture technology, specifically a feed formulation and preparation method for improving the reproductive performance of broodstock tiger prawns. The method includes: determining the specific nutritional requirements of broodstock tiger prawns during gonadal development; screening core animal and plant protein sources and determining their basic mass ratios accordingly; performing targeted biological treatment on the core raw materials to enrich gonadotropin-active small molecules; compounding these with phospholipids, attractants, vitamins, and minerals to form a functional additive combination; mixing the core raw materials and additive combination in proportion, granulating, and adding antioxidants during processing; and finally verifying the formulation effect and confirming the final compound feed through standardized aquaculture trials. The compound feed obtained based on this method can effectively replace traditional live feed, improve broodstock tiger spawning, hatching rate, and larval quality, and has advantages such as balanced nutrition, stable quality, and suitability for large-scale production, solving the industry problems of live feed being prone to pathogens, supply fluctuations, and high costs.

The invention relates to a method for cryopreserving eggs, nauplii and young barnacles of barnacles. Furthermore, the present invention relates to the cryopreserved feed and the use of the preserved organisms as live feed organisms in marine aquaculture, typically in place of rotifers and artemia and other living feed organisms.

The utility model discloses a living feed emulsifier mixing device which comprises an emulsifier barrel and a supporting plate, the supporting plate is arranged in the emulsifier barrel, a connecting rod penetrates through the supporting plate, flat keys are fixedly connected to the two sides of the connecting rod and penetrate through the supporting plate, a first gear is fixedly connected to the bottom of the connecting rod, and a second gear is fixedly connected to the bottom of the connecting rod. Second gears are rotationally connected to the bottom of the supporting plate and located on the periphery of the first gear, the second gears are connected with the first gear in an engaged mode, and stirring rods are fixedly connected to the bottoms of the second gears. The feed emulsifying device has the beneficial effects that the uniform distribution of an emulsifying agent in feed can be ensured by mechanical stirring automation, the emulsifying effect is ensured, the stability of the feed quality is improved, nutritional ingredients in the feed are more uniformly distributed by uniform stirring, each part of the feed is ensured to contain a proper amount of nutritional ingredients, and the feed quality is improved. And compared with a traditional device, the operation quality and the use efficiency are greatly improved.

The invention discloses a method for cultivating, catching, strengthening and disinfecting Hucho taimen, and belongs to the technical field of aquaculture. The method comprises the following steps: carrying out symbiotic low-cost cultivation of unicellular algae and substrong Hucho taimen in an outer pond through an intermittent fertilization strategy; a waterwheel aerator is used for forming directional water flow, and the copepods are mildly collected in a 120-mesh temporary storage net cage to achieve low-damage fishing; specially-made fermented feed is fed into the net cage for precise nutrition enhancement for three days, so that the ratio of DHA to EPA in the body reaches 4: 1; and finally, performing efficient disinfection under specific parameters. The method systematically solves the problems of high cost, large damage, uneven nutrition and large biological safety risk in the traditional process, can stably obtain high-quality live bait with the survival rate not lower than 85%, high nutritional value and no specific pathogen, and has remarkable industrial application value.