At present, the cultivation of crab species has transitioned to hibernation. To ensure safe wintering of crab species, attention should be paid to the following aspects.
Do a good job of facility maintenance Completely check and maintain the internal and external double-deterrence membranes, escape prevention walls, and in-and-out drainage systems installed in the ponds to ensure the safety of facilities and prevent the invasion of enemy pests and escape of crab species.
Paying attention to water quality Regulation of pond water quality is directly related to the health and growth of crab species. To do this, regular pond water quality analysis needs to be performed, and regulation should be carried out in a timely manner so that pool water is in a state of fatness, livelihood, tenderness, coolness, and high dissolved oxygen. Provide a suitable breeding environment for safe wintering of crab species.
It is a long process to intensify the wintering of feeding the crab species before winter, and it is necessary to seize the favorable opportunity of the current water temperature, continue to strengthen the feeding of feed, enhance the body composition of crabs, and provide energy guarantee for wintering crab species.
Precipitating early-mature crabs were affected by the instability of climatic factors such as yin after the mid-arid drought during the breeding season this year, and a small amount of precocious phenomena appeared during the cultivation of crabs. Precocious crabs and crabs are striving to feed, compete for space, compete for oxygen, and feed on crab species, and should be caught in time. In general, the combination of cage trapping and manual trapping is used for clearing.
Strict prevention and control of diseased and healthy crab species is the key to safe wintering. According to the practice in recent years, ciliate parasitism and algae species in the autumn and winter crabs are heavily weighed, and ciliates should be controlled at noon on sunny days 1 to 2 times before wintering. Pay attention to avoiding the peak of young crab shells, at the same time regularly disinfect the pond water body, improve water quality, prevent young crabs from getting sick into the winter, and ensure winter safety.
Strengthen wintering management Keep the winter crab pool water level stable and add fresh water in time. Take artificial ice-breaking, water injection and other measures in time after snowing or water freezing to prevent the lack of oxygen or freezing of crab species.
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