Storage and transportation technology of pollution-free fish
Aquaculture aquatic products from the pond to the table to implement the whole process of safety and quality control, in which storage and transportation is one of the important links, if there are mistakes in storage and transportation, the so-called pollution-free will fall short of success.
1. The quality of water for storage and use shall comply with the relevant provisions of the State. Fish in the process of storage and transportation should be light, light transport, to avoid extrusion and collision, pay attention not to dehydration or deicing.
Second, the packing container should be non-toxic, odorless, clean, strong and with good drainage conditions. Live fish can be filled with canvas buckets, live fish boxes or nylon bags, while fresh fish can be filled with bamboo baskets, wooden buckets, plastic boxes or plastic buckets.
Live fish should be shipped by live fish carriers, live water vessels or other transport equipment with oxygenation devices. Heat preservation and preservation measures should be taken for fresh fish, the temperature of chilled fish should be controlled between 0 ℃ ~ 5 ℃, and the ice for cooling should comply with the relevant regulations of the state.
Fourth, the means of transport should be cleaned before loading the fish, so as to be clean, non-toxic and odorless, and strictly prevent pollution during transportation.
Live fish can be temporarily reared with oxygen in clean, non-toxic, odorless cement ponds and aquariums.
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Beware of fish flooding in summer and autumn high temperature season
The phenomenon of fish flooding often occurs in fish ponds due to negligence in management, which has caused great losses to fish farmers. In order to prevent pond fish from flooding, the symptoms, causes and control measures are briefly introduced as follows, which can be used as a reference for fish farmers. 1 symptoms of the disease pond fish floating head due to severe hypoxia, scattered throughout the pond, mouth opened and closed, calmly and directly from the surface of the air to absorb oxygen, serious slowly turn up, struggling to maintain balance, so repeated several times after the abdomen died upward. 2 dead fish species
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Management of exotic fingerling of black fish
There are three sources of black fish fry: first, artificial breeding; second, purchase from non-local and non-local units; third, fishing for wild fry in the lush places of reservoirs, lakes and ditches. The following is how to manage the latter two kinds of seedlings as follows: first, when purchasing seedlings purchased by non-local and non-local units, you should carefully select strong and high-quality fish species. The specific standards are: from the appearance of the fish, the scales and fins are required to be complete, bright and shiny, normal shape, no traumatic disease. In terms of physique, it requires a high degree of fatness.
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