Fish cage cultivation techniques in autumn and winter cage fish After autumn pond fattening, the constitution is generally more robust and easy to adapt to cage environment. At the same time, overwintering of large water surface caisson, not only the fish species weight loss is less than the wintering species of the pond, but also the fish began to eat earlier after the end of spring in the spring, and the growth period is prolonged by about one month compared with the spring-introduced species. The fish grows fast and the yield increases significantly. The overwintering species of the caisson is about 30% faster than the spring-introduced species, and about 35% of the specifications are out of the box. Therefore, it is a more scientific mode of putting in the winter when the fish species enter the box. Its operating technology requirements are as follows:
When entering the box into the box to the water temperature of 15 ~ 18 °C is more appropriate, the water temperature below 10 °C should not be carried out.
The disinfecting of the fingerlings before entering the box can be carried out in combination with the transport of the fingerlings, that is, 20 to 30 minutes before the transportation arrives at the destination, the medicine is dissolved and put into a transport canvas or fish bucket. Methylene blue is generally available, and the amount of drug used must be accurately calculated. Do not arbitrarily estimate it.
Cage ready for fish species 7 to 10 days before entering the box will be completely intact double cages into the water, so that the cage surface can be attached to a layer of algae or sediment material, and then put the fish species, to prevent new cage scratches Fish body.
After entering the box, the fish species should be fed with medicine baits for a period of time, so that the injured parts of the fish species can be recovered in a timely manner in the process of catching and transport, thus reducing the occurrence of fish diseases.
The caisson management before the caisson should be fed to the water temperature of about 5 ~ 6 °C before winter, fish do not eat so far, in order to maintain the body before the winter fish robust, do not cause premature fish due to weakness caused by physical weakness.
When the caisson water temperature to master caisson when the water temperature is selected at about 4 °C, then the water temperature above and below the water body is basically the same, the upper and lower water convection ends, the fish when the sink is physiologically stable, will not be caused by changes in the water layer unrest.
When entering the box into the box to the water temperature of 15 ~ 18 °C is more appropriate, the water temperature below 10 °C should not be carried out.
The disinfecting of the fingerlings before entering the box can be carried out in combination with the transport of the fingerlings, that is, 20 to 30 minutes before the transportation arrives at the destination, the medicine is dissolved and put into a transport canvas or fish bucket. Methylene blue is generally available, and the amount of drug used must be accurately calculated. Do not arbitrarily estimate it.
Cage ready for fish species 7 to 10 days before entering the box will be completely intact double cages into the water, so that the cage surface can be attached to a layer of algae or sediment material, and then put the fish species, to prevent new cage scratches Fish body.
After entering the box, the fish species should be fed with medicine baits for a period of time, so that the injured parts of the fish species can be recovered in a timely manner in the process of catching and transport, thus reducing the occurrence of fish diseases.
The caisson management before the caisson should be fed to the water temperature of about 5 ~ 6 °C before winter, fish do not eat so far, in order to maintain the body before the winter fish robust, do not cause premature fish due to weakness caused by physical weakness.
When the caisson water temperature to master caisson when the water temperature is selected at about 4 °C, then the water temperature above and below the water body is basically the same, the upper and lower water convection ends, the fish when the sink is physiologically stable, will not be caused by changes in the water layer unrest.
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