Learn Tips and Techniques for Catfish Farming
Learn Tips and Techniques for Catfish Farming from Seed to Harvest!
Catfish Farming
Catfish is a popular commodity among consumers in various countries due to its savory taste and ease of preparation. Moreover, its easy availability is attributed to its simple care requirements.
Catfish farming is not difficult, as long as we are diligent and adequately prepared. However, there are still those who fail in catfish cultivation.
To reduce the risk of failure in catfish farming, here are some tips and techniques for catfish farming, starting from obtaining good fingerlings to harvest.
Selecting Quality Fingerlings
1. Choosing a Source
It's recommended to purchase catfish fingerlings from hatcheries that are certified with good fish breeding practices (CPIB) and good fish farming practices (CBIB). This is to minimize the risk of diseases carried by the fingerlings. Catfish fingerlings carrying diseases can be detrimental to farmers.
Common diseases affecting catfish include bacterial diseases, viruses, and parasites. Catfish fingerlings are more susceptible to these diseases compared to adult fish. Genetic diseases can also arise due to poor breeding stock quality or inbreeding.
2. Pay Attention to Physiological Condition
Another tip for catfish farming is to observe the physical condition of the fingerlings. Good catfish fingerlings typically exhibit lively movements, perfect physical features, no missing or injured body parts, and uniform sizes.
Preparing Farming Facilities
1. Pond Infrastructure
When preparing the pond, it's advisable to use circular ponds, as they provide more space for catfish movement. The pond structure can be made of either tarpaulin or concrete.
For easier water exchange, position the pond close to water inflow and outflow channels. If possible, integrate drainage channels with the pond, and include clean water channels around the pond's entrance.
2. Creating an Ecosystem
When setting up the catfish farming pond ecosystem, you can apply the biofloc system by cultivating probiotic bacteria in the pond for 14 days. Once the bacterial culture period is over, the catfish fingerlings can be introduced to the pond.
A biofloc pond with a diameter and height of 2 meters can accommodate 1500 catfish fingerlings measuring 5-8 cm (14-20 days). In contrast, a non-biofloc pond can hold up to 700 fingerlings.
3. Essential Practices
The biofloc system enables a symbiotic relationship between microorganisms and catfish, ensuring oxygen supply. Therefore, sufficient oxygen levels must be maintained in the pond. Increase oxygen supply using a blower or aerator at various points in the pond.
Before introducing catfish fingerlings or cultivating probiotic bacteria, allow the fresh water source to settle in the pond. This helps dissipate any toxins present in the water, ensuring the safety of the catfish.
Catfish Growth Management
1. Feeding Management
Catfish are fed floating feed, and the feed size varies based on the fish's age. Adjust the feed size to match the catfish's mouth opening.
Feeding should occur three times a day, with an 8-hour interval between feedings. The ad libitum feeding method is recommended, where feed is given gradually until the catfish are satiated.
2. Maintenance
In catfish rearing, regular grading should be conducted at least every two weeks. This helps maintain uniform sizes among the catfish in the pond and reduces cannibalism.
"Catfish tend to exhibit cannibalistic behavior, which can be triggered by suboptimal feeding and lack of grading, leading larger fish to prey on smaller ones."
3. Water Replacement
Water changes in the catfish farming pond can be done after rainfall or when there's an unpleasant odor in the pond. A maximum of 50% of the total pond water should be replaced.
Before changing the water, catfish should fast for 12 to 24 hours to prevent stress during the water change process. Stressed fish might regurgitate their food when the water is replaced.
4. Oxygen Requirements
Adequate oxygen supply is crucial for successful catfish farming. Studies show that meeting oxygen requirements leads to faster growth and reduced susceptibility to diseases.
Oxygen can be supplied in the water through blowers, aerators, or circulating water.
5. Water Quality Management
Maintaining water quality is essential in catfish farming. Poor water quality can hinder catfish growth.
Thus, regular monitoring of water quality indicators is necessary. Measurements should include physical factors like temperature (using a thermometer), as well as chemical factors like pH, dissolved oxygen (DO), and ammonia. Conduct water quality measurements at least twice a day to ensure pond water remains stable and optimal.
Harvesting Catfish
1. Determining Harvest Time
The catfish farming cycle is relatively short, lasting around 3 to 4 months. To know when the catfish are ready for harvest, sampling is conducted. Typically, catfish ready for harvest have around 8 to 11 fish per kilogram.
2. Harvesting Process
First, the catfish should be fasted for about 24 hours before harvesting. This helps the fish endure the transportation process.
Next, drain the water, leaving only the fish behind. This gathers the fish in one area for easier harvesting. If the fish population is small, use a net to remove them slowly. For larger fish populations, a mesh cloth can be used for harvesting.
