Method for preventing and controlling shrimp communicable diseases through twice epinephelus coioids release
An infectious technology of grouper, which is applied in the field of prevention and control of infectious diseases of farmed shrimps, can solve the problems of rapid spread of infectious diseases, untimely, incomplete removal of diseased shrimps, etc., so as to reduce workload and improve efficiency , beneficial to the quality of the effect
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Embodiment 1
[0029] 1. Comparing with the normal management method of prawn farming, after cultivating the water, put in about 1.0cm shrimp seedlings, 3 to 100,000 tails per mu. The "normal management method" mentioned here refers to the general routine technical operations for shrimp farming by those skilled in the art. For details, please refer to the instruction manual for shrimp farming. The water depth of the shrimp culture pond is preferably 1.5-2.5 meters. The salinity of the aquaculture water body in the present invention is in the range of 11-41. The "salinity" mentioned here means the total amount (weight) of dissolved salts in water, expressed in percent per thousand. Other physical and chemical factors of the shrimp culture water body: temperature is preferably 16-36°C, pH is preferably 6.5-8.5, dissolved oxygen ≥ 4.0 mg / L, ammonia nitrogen ≤ 0.50 mg / L, nitrite nitrogen ≤ 0.05 mg / L.
[0030] 2. Put the grouper in time. After 10-30 days of prawn cultivation, put the grouper f...
Embodiment 2
[0033] From April to July 2011, a prawn breeding experiment was carried out in Hainan Nanjiang Biotechnology Co., Ltd. A total of 10 ponds were carried out, numbered 1-10, and each pond had a breeding area of 5 mu, a total of 50 mu. - 30,000 shrimp seedlings per mu in No. 3 pond, 80,000 shrimp seedlings per mu in No. 2-6 pond, and 100,000 shrimp seedlings per mu in No. 7-10 pond. According to the technology of the present invention, carry out Litopenaeus vannamei culture, put in 20 days after putting in the seedlings and start putting in the weight of the oblique grouper of about 100g / tail with the density of 30 tails / mu, when the prawns are cultivated to the body length of 6-7cm, again With the density of 30 tails / mu, put in the grouper whose body weight is about 180g / tail. After 100 days of breeding, the prawns will be on the market, and the outbreak of viral diseases will not occur in the prawns in the 50 mu culture pond. And other adopt the prawn culture pond that does ...
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