California bass has become a popular species in freshwater farming due to its delicious meat, fast growth and high economic value. But to keep them "well cared for", daily management is a big deal! Today, we have compiled an extremely practical management guide to help you easily deal with aquaculture challenges!
Water quality management
California bass has high requirements for water quality, and the following parameters should be given special attention:
"水温" 可 以 翻 译 为 "water temperature"
The most suitable water temperature for the growth of California bass is 22-28℃. When the temperature drops below 15℃ or rises above 32℃, their feed intake decreases and their resistance declines.
During the high-temperature period, the water level can be deepened (2-3 meters), sunshade nets can be used for coverage, and the fluidity of the water body can be increased. During the low-temperature period, insulated sheds can be built and heating equipment (such as groundwater replenishment) can be used.
2. Dissolved oxygen content
The dissolved oxygen in the water body should be maintained above 5mg/ L. Oxygen deficiency can cause sea bass to surface and lead to diseases.
An oxygenator can be installed and turned on for 2 hours each in the morning and evening. It can be turned on all day on rainy days. Control the stocking density and avoid excessive feeding to reduce oxygen consumption.
3. Water quality indicators
The ideal water quality parameters are: pH value 7.0-8.5, ammonia nitrogen less than 0.4mg/L, and nitrite less than 0.1mg/L
It can be tested regularly to avoid sudden changes in pH. Change the water regularly or use biological agents for regulation.
Feed feeding
1. Feed selection
Use well-known brand, high-protein, easily digestible and after-sales dedicated sea bass compound feed.
2. Feeding techniques
The "Four Determinations" principle: fixed time, fixed location, fixed quantity, and fixed quality.
Adjust the feeding amount according to the water temperature: When the water temperature is above 25℃, the daily feeding amount is 3%-5% of the fish's body weight. When the water temperature drops below 15℃, reduce the feeding amount or stop feeding.
3. Observe feedback
If you find that the sea bass are not very active in competing for food or have abnormal feces (such as white or slender), you should adjust the feed in time or check the water quality.
Disease prevention and control
1. Daily inspection
Observe the activity of the sea bass every morning and evening, and check if there are any abnormalities such as ulcers, rotten fins or white spots on its body surface.
2. Preventive measures
Regular disinfection: Sprinkle quicklime or iodine preparations throughout the pond once a month.
Enhance immunity: Add vitamin C, E or probiotics to the feed to improve the disease resistance of sea bass.
3. Emergency response
If any disease is found, immediately isolate the diseased fish and consult a professional veterinarian or technician to avoid blind medication.
Other management points
Density control: It is recommended that the number of fish released per mu of water surface should not exceed 3,000 to avoid excessive crowding.
Prevent escape and enemy damage: Check whether the pond ridges and net cages are damaged to prevent birds, snakes and other creatures from preying on them.
Special and abnormal weather management: Make adequate preparations in advance, stabilize water in advance to prevent algae growth and bottom inversion, adjust water in a timely manner after special weather to reduce the impact of water quality on farmed organisms, and pay attention to ph changes.
Record management: Establish a breeding log to record water temperature, feeding amount, disease conditions, etc., to facilitate the summary of experience.