First, the sea area choice
The artificial breeding of large yellow croaker cages in the sea area selected in Jiaozhou Bay, the fertile water, high-quality biological populations thrive, salinity is appropriate, and the salinity is almost in a vertical homogeneous state within one year, the annual minimum is about 31.6. The average annual water temperature is 12°C, summertime is 25°C to 27.3°C, sea surface water temperature is between 9°C and 27°C, temperature difference between the table and bottom layer is less than 0.5°C to 1°C, and flow rate is 0.3m to 0.5m/s. At the lowest tide, the water depth is more than 10 meters, and the maximum is 15 meters, the transparency is 50 centimeters to 120 centimeters, and the dissolved oxygen is generally 7.1 milligrams to 8.0 milligrams per liter, which is very suitable for the artificial breeding of large yellow croaker cages.
Second, cage settings and specifications
The cage setup for the large yellow croaker cultivation stage is basically the same as that for the species breeding stage, except that the cage size and mesh size should be changed as the species grows. The cages are made of polyethylene and other materials, and 40 mesh to 12 mesh nylon screens are available. The mesh size is about 30 mm. In order to avoid abrasion of the fish, the texture of the netting material should be relatively soft and there should be no knotted pieces. The depth of the cage is generally 3.5 to 4.5 meters, and the water depth in the sea reaches 8 meters or more at low tide. The specifications of the cages are 4m 4m, 3m 3m and so on.
Third, fish species stocking
1. Fish should be selected for body shape uniformity, robust physique, complete body scales, no disease, no injury, and the size of the same, the best each end reaches 80 grams to 100 grams.
2. Large yellow saplings are transported using enclosed water tanks and buckets and are transported by live water boats for 24 consecutive hours. Stop feeding before transport and remove excess mucus during transport. The fingerlings were transported from the South to Qingdao Port by ship and then transported to the cage breeding site with oxygen in a small vessel. Due to the close proximity of the road, the survival rate during transportation reached 100%. The release time was May 20 and the water temperature was 18.5°C.
3. After the fish species were shipped back, we soaked them with antibiotics and formalin solution and transferred them to cages for culture. A total of more than 4,000 fish species were shipped, and stocking densities ranged from 25 to 30 per square meter.
Fourth, feed the bait
During the growing season, large yellow croakers usually feed once a day, morning and evening, but they can be fed every other day in rainy weather. The amount of feeding on the day is determined based on the fish’s food intake, weather, water color, and current changes. Water temperature above 29 °C, wet bait daily feeding rate of about 6% to 8%. Large yellow croaker is mainly based on live bait, miscellaneous fish, miscellaneous shrimps, oyster meat, etc., and it needs to use 2.5 kg of bait for each tail, and the cost per tail is about 3 yuan.
V. Cultivation management
The management of large yellow croaker cages during the growing period is the same as that of fingerling cultivation, but the fastest growing period in the growing season is during the high temperature period. At this time, the cages are most likely to adhere to vivid plants, and the cages should be changed frequently, generally every 15 Change once a day or so. Each time a combination of wash cages should be used, the fish in the cage should be soaked and disinfected with antibiotic solution to reduce fish disease. Adhere to the daily dynamics of checking fish three times a day, observe and understand tides, currents, and fertility at any time to prevent death from hypoxia, identify problems, and resolve problems in a timely manner.
Six, economic benefits
The survival rate reached 80% during the rearing period, and 3200 fish were harvested each year. Each end reached an average of 1.5 pounds (up to 2 pounds and a minimum of 1 pound). The market price of live fish ranges from 75 yuan to 100 yuan per kilogram, and the output value reaches 15 Ten thousand yuan.
The artificial breeding of large yellow croaker cages in the sea area selected in Jiaozhou Bay, the fertile water, high-quality biological populations thrive, salinity is appropriate, and the salinity is almost in a vertical homogeneous state within one year, the annual minimum is about 31.6. The average annual water temperature is 12°C, summertime is 25°C to 27.3°C, sea surface water temperature is between 9°C and 27°C, temperature difference between the table and bottom layer is less than 0.5°C to 1°C, and flow rate is 0.3m to 0.5m/s. At the lowest tide, the water depth is more than 10 meters, and the maximum is 15 meters, the transparency is 50 centimeters to 120 centimeters, and the dissolved oxygen is generally 7.1 milligrams to 8.0 milligrams per liter, which is very suitable for the artificial breeding of large yellow croaker cages.
Second, cage settings and specifications
The cage setup for the large yellow croaker cultivation stage is basically the same as that for the species breeding stage, except that the cage size and mesh size should be changed as the species grows. The cages are made of polyethylene and other materials, and 40 mesh to 12 mesh nylon screens are available. The mesh size is about 30 mm. In order to avoid abrasion of the fish, the texture of the netting material should be relatively soft and there should be no knotted pieces. The depth of the cage is generally 3.5 to 4.5 meters, and the water depth in the sea reaches 8 meters or more at low tide. The specifications of the cages are 4m 4m, 3m 3m and so on.
Third, fish species stocking
1. Fish should be selected for body shape uniformity, robust physique, complete body scales, no disease, no injury, and the size of the same, the best each end reaches 80 grams to 100 grams.
2. Large yellow saplings are transported using enclosed water tanks and buckets and are transported by live water boats for 24 consecutive hours. Stop feeding before transport and remove excess mucus during transport. The fingerlings were transported from the South to Qingdao Port by ship and then transported to the cage breeding site with oxygen in a small vessel. Due to the close proximity of the road, the survival rate during transportation reached 100%. The release time was May 20 and the water temperature was 18.5°C.
3. After the fish species were shipped back, we soaked them with antibiotics and formalin solution and transferred them to cages for culture. A total of more than 4,000 fish species were shipped, and stocking densities ranged from 25 to 30 per square meter.
Fourth, feed the bait
During the growing season, large yellow croakers usually feed once a day, morning and evening, but they can be fed every other day in rainy weather. The amount of feeding on the day is determined based on the fish’s food intake, weather, water color, and current changes. Water temperature above 29 °C, wet bait daily feeding rate of about 6% to 8%. Large yellow croaker is mainly based on live bait, miscellaneous fish, miscellaneous shrimps, oyster meat, etc., and it needs to use 2.5 kg of bait for each tail, and the cost per tail is about 3 yuan.
V. Cultivation management
The management of large yellow croaker cages during the growing period is the same as that of fingerling cultivation, but the fastest growing period in the growing season is during the high temperature period. At this time, the cages are most likely to adhere to vivid plants, and the cages should be changed frequently, generally every 15 Change once a day or so. Each time a combination of wash cages should be used, the fish in the cage should be soaked and disinfected with antibiotic solution to reduce fish disease. Adhere to the daily dynamics of checking fish three times a day, observe and understand tides, currents, and fertility at any time to prevent death from hypoxia, identify problems, and resolve problems in a timely manner.
Six, economic benefits
The survival rate reached 80% during the rearing period, and 3200 fish were harvested each year. Each end reached an average of 1.5 pounds (up to 2 pounds and a minimum of 1 pound). The market price of live fish ranges from 75 yuan to 100 yuan per kilogram, and the output value reaches 15 Ten thousand yuan.
Parasite drug resistance can be divided into anti-worm medicine, insect drugs antigen in vitro and drug;Mainly including injection .powder.tablet.solution,stc.Usually used in the form of injection or oral,ntravenous injection, intramuscular injection, subcutaneous injection, etc.used in Horse, cattle, sheep, pig, dog, cat and rabbit.
For veterinary use only.
Keep out of the reach of chlidren. the package generally bottled Then pretend to box packing,then the carton
Animal Parasite Medicine,Veterinary Parasite Drugs,Animal Parasites,Intestinal Parasites
Hebei Kexing Pharmaceutical Co., Ltd. , https://www.kexingpharma.com