Chilling fish refers to fish that are native to the tropics or subtropics and have low-temperature-tolerance characteristics. Currently, the species that have been promoted for farming include squid, tilapia, leather beard, freshwater whitefish, and freshwater stone spots. In winter, most of these fish need to use hot spring water, geothermal water, and factory waste water to maintain winter in most parts of the country. When the temperature rises in the following year, it is only when large areas are stocked in natural aquaculture water bodies. Therefore, when stocking, you should grasp the following points:
1, need to select timely seasons and weather, require the temperature of the stocking water to stabilize above the fish's survival temperature limit, such as tilapia (14-16 degrees Celsius), leather beard (14 degrees Celsius), freshwater white fleas (18 degrees Celsius), Domestic squid (7 degrees Celsius), the season is mostly in mid-April to early May, the local after the last spring cold is appropriate, not blindly early. When the weather is sunny and windy, rain and windy days should be avoided.
2. Disinfection should be done in clear ponds for 7-10 days before stocking. Generally, 125-150 kg of quicklime or 20 mg of bleaching powder per lb should be combined with the fish pondworm to bring water clear ponds, which can effectively eliminate fish predators and kill. Elimination of pathogens and raising the survival rate of fish species.
3, the good fish stocking disinfection. Chilling-warping fishes are often carried out in high-density farming conditions over winter, resulting in a greater impact on their constitution and, in addition, they are susceptible to injury during the outing operation. Therefore, the stocking species must be well-disinfected. The use of salt (3%-5%), methylene blue (0.2 mg/L), or potassium permanganate (20 mg/L) can be used for the "medicine bath".
4, the occurrence of caution against watery mildew. Chilled-fish stocking season is mostly in late spring. Water temperature is not high, and it is most likely to cause saprophytic disease accompanied by red skin disease. Therefore, besides the disinfection of fish species, it should be splashed with gallons 1.5-3 kg per mu. Chlorine 200 grams or sulfa drugs such as baits to prevent.
5. Intensive feeding at the beginning of stocking. Should be fed more concentrated material (such as artificial feed, etc.), to strengthen water quality control, as soon as possible to restore and enhance the body of fish, which is conducive to the rapid growth of fish and disease resistance.
1, need to select timely seasons and weather, require the temperature of the stocking water to stabilize above the fish's survival temperature limit, such as tilapia (14-16 degrees Celsius), leather beard (14 degrees Celsius), freshwater white fleas (18 degrees Celsius), Domestic squid (7 degrees Celsius), the season is mostly in mid-April to early May, the local after the last spring cold is appropriate, not blindly early. When the weather is sunny and windy, rain and windy days should be avoided.
2. Disinfection should be done in clear ponds for 7-10 days before stocking. Generally, 125-150 kg of quicklime or 20 mg of bleaching powder per lb should be combined with the fish pondworm to bring water clear ponds, which can effectively eliminate fish predators and kill. Elimination of pathogens and raising the survival rate of fish species.
3, the good fish stocking disinfection. Chilling-warping fishes are often carried out in high-density farming conditions over winter, resulting in a greater impact on their constitution and, in addition, they are susceptible to injury during the outing operation. Therefore, the stocking species must be well-disinfected. The use of salt (3%-5%), methylene blue (0.2 mg/L), or potassium permanganate (20 mg/L) can be used for the "medicine bath".
4, the occurrence of caution against watery mildew. Chilled-fish stocking season is mostly in late spring. Water temperature is not high, and it is most likely to cause saprophytic disease accompanied by red skin disease. Therefore, besides the disinfection of fish species, it should be splashed with gallons 1.5-3 kg per mu. Chlorine 200 grams or sulfa drugs such as baits to prevent.
5. Intensive feeding at the beginning of stocking. Should be fed more concentrated material (such as artificial feed, etc.), to strengthen water quality control, as soon as possible to restore and enhance the body of fish, which is conducive to the rapid growth of fish and disease resistance.
Plastic Film,Stretch Film,Transfer Film,Packaging Bags
HDFJHGFJ , http://www.nbmetalnet.com