Freshwater shrimp breeding technology

Freshwater shrimp breeding technology

  • CN 106,035,176 B
  • Filed: 07/08/2016
  • Issued: 08/06/2021
  • Est. Priority Date: 07/08/2016
  • Status: Active Grant
First Claim
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1. A freshwater shrimp breeding technology is characterized by comprising the following steps:

  • 1) the requirements of the culture pond are as follows;

    digging a pond at a lower position of a water source, manually guiding water, and having no pollution, convenient irrigation and drainage, wherein the bottom of the pond is flat, two sides of the pond are inclined at 60 degrees, the bottom of the pond is provided with 10cm of loam, and a layer of medical stone is laid on the loam;

    the other two sides of the pond except the slope are respectively provided with a row of cultivation net cages with the specification of 5m multiplied by 1 m;

    2) preparation before stocking;

    spreading quicklime and bleaching powder in the pond in the first half month of stocking, injecting water, standing for 24h, discharging, injecting water again, wherein the depth of the injected water is 20-40cm, installing an aerator on each of two sides of the pond where the culture net cage is arranged, and performing disinfection treatment for 15 min before stocking shrimp seedlings;

    the pH value of the disinfected pond water body is between 6 and 8.5;

    3) water quality management;

    planting curdled vegetables, aquatic iris tectorum and droughhaired bevel grass on the slope of the pond, and planting small yellow grass, red-line grass and elodea peltata at the bottom of the pond;

    putting pear-shaped ring-shaped snails into the pond;

    sprinkling crude salt once every half month, adding oxygen to the water body for 2 hours every day, and changing water once every 3-5 days, wherein the water changing amount is based on keeping the transparency of the water in the pool to be 30-40 cm;

    the dissolved oxygen amount in each liter of water after adding oxygen is more than or equal to 1.5 mg;

    4) feeding;

    the formula feed and the fresh bait are mixed and put in a mass ratio of 4;

    3, and the formula feed is prepared from the following raw materials in parts by weight;

    7 parts of silkworm chrysalis, 14 parts of fishbone powder, 13 parts of rice bran, 2 parts of lecithin, 2 parts of yeast, 5 parts of mineral substances, 9 parts of pitaya flower, 8 parts of soybean meal, 13 parts of bovine bone powder and 5 parts of camellia seed;

    the fresh bait is one or more of small shrimps, earthworms, small trash fishes and pear-shaped ring-shaped snails which are beaten into meat paste;

    5) feeding feed;

    setting 3 levels of the aquaculture net cages in the step 1, namely a first level, a second level and a third level, wherein the number of the aquaculture net cages in the first level is 10-15, 3000 plus 4000 shrimp seedlings are put in a single cage, and the number of the aquaculture net cages in the other levels is 3-5;

    feeding for 4 times every day, wherein the feeding amount is 1 part, 2 parts, 3 parts and 5 parts from the first feeding in sequence after feeding for half an hour each time;

    the daily feed intake of the first-level aquaculture net cage is 5-8% of the weight of the monomer, and the daily feed intake of the second-level aquaculture net cage is 8-10% of the weight of the monomer;

    the daily feed intake of the third-level aquaculture net cage is 10-12% of the weight of the monomer;

    measuring the shrimp seeds in the first-level aquaculture net cage every 10 days, removing the shrimp seeds with the body length more than 20% of the average body length, and feeding the shrimp seeds to the next-level aquaculture net cage in a separated mode;

    the next-level measurement selection time is 10+2n days, wherein n is the level number of the aquaculture net cage, and when the length of the freshwater shrimp monomer in the third-level net cage reaches 2.5-3cm, the freshwater shrimp monomer is fished out and placed into a pond for free-ranging culture;

    6) reasonably fishing; and

    fishing and selling the freshwater shrimp monomer in the pond when the length of the freshwater shrimp monomer reaches more than 4.5 cm.

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