Composition and application for preventing bacterial enteropathy in deep-sea cultured fish
An intestinal disease and composition technology, which is applied in the field of marine aquaculture disease prevention and control, can solve problems such as difficulty in finding diseases, inability to realize real-time observation of cultured fish, etc., and achieves the advantages of reducing manpower and material resources, improving cumbersome production procedures and not easy to lose. Effect
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Embodiment 1
[0023] At first in the aquarium experimental system of this laboratory, adopt the method of the present invention to carry out the experiment of medicine bait making and throwing something to feed Xu's flat scorpionfish. In the experiment, six fiberglass barrels with a diameter of 90 cm and a height of 110 cm were used to simulate cages for aquaculture in deep and open seas. Among them, 3 barrels are set as Group A, and the barrels are respectively filled with 500L of seawater and 50 juveniles of Xu's flat carp with an average weight of about 40g, and are cultured in open flowing water. The other 3 barrels are set as group B, and only 500L of seawater is contained in the barrels, and the flowing water method is adopted.
[0024] The composition formula and mass parts used in the experiment are: 30 parts of berberine tannin, 10 parts of verbena ethanol extract, 20 parts of rhubarb superfine powder of 200-300 mesh, 10 parts of cypress superfine powder of 200-300 mesh , 15 parts...
Embodiment 2
[0029] A deep-water anti-wind and wave cage breeding base in Changdao County, Shandong Province has used large-scale circular anti-wind and wave cages with a circumference of 40m and a depth of 7m to breed Scorpius xushi for more than ten years. However, from 2010, during the period of high water temperature from July to October every year, the scorpionfish cultured in the net cages have a large area of enteritis disease. Among them, more than 60 culture cages infected with enteritis disease were found in 2014-2016. %, the daily mortality rate of each net cage is 0.03% to 0.5%, and the death time can last for more than 3 months, causing serious economic losses to the farmers. Through two years of epidemiological investigation and etiological research, it was confirmed that the bacterial enteritis disease of flat scorpionfish in this breeding area was mainly caused by the infection of Photobacterium mermaidus and Vibrio rotifer.
[0030] In 2017, 5 net cages were selected in ...
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