What management measures need to be taken during catfish farming
Catfish is a freshwater fish, generally living in various rivers and lakes. Its habits are opposite to those of humans: it mostly rests during the day and comes out to forage at night. Although catfish have teeth, they still feed by swallowing, and the teeth only serve to ensure that food cannot escape. Nowadays, more and more people are farming catfish, and how to manage them has become everyone's primary concern. Today, the editor brings you the management measures for farming catfish. Let's take a look!
1. Regular water changes
During the farming process, water should be changed in a timely manner according to the water quality. Usually the frequency of water changes is once every half month. When the water quality is not very dirty, only 30% of the pond water needs to be changed. Ensuring water quality is beneficial to the growth of catfish. Observe the water quality regularly. Yellow-green indicates relatively normal conditions. If catfish are often seen jumping out of the water, that indicates the water is too fertile and the dissolved oxygen content in the water is insufficient. At this time, the water should be changed promptly to increase the dissolved oxygen content. In stuffy or rainy weather, attention should also be paid to increasing oxygen in the pond to prevent fish deaths caused by insufficient dissolved oxygen. Some water hyacinths can be planted on the water surface, which can both regulate water quality and provide shade.
2. Reasonable feeding
Catfish have a relatively omnivorous diet and are very voracious. They will not control their own food intake, so when we feed them, we must control the feeding amount well. Determine the feeding amount according to the number of fish being farmed, and do not feed randomly. When feeding, scatter the feed evenly in the pond and follow the principle of small amounts and frequent feeding. Let the catfish eat their fill to prevent some fish from not getting enough to eat, which can lead to uneven growth. During the juvenile stage, carnivorous feed should be the main food, and then as they grow, the feed should gradually be switched to plant-based feed. Adjust the feed appropriately according to various factors such as the growth process.
3. Disease prevention and control
Various diseases can occur when farming catfish, among which rot disease is the most serious. It generally appears about 25-30 days after the fish fry are stocked. Sick fish show many blisters of different sizes on the surface, and the fins are red, swollen, and gradually rotting. In the later stage, there is large-scale death or even total loss. Therefore, we must do a good job in prevention and control, and regularly disinfect the pond. This disease is difficult to treat, so only preventive work can be done well. An appropriate amount of medicine can be added to daily bait, and quicklime powder or bleaching powder can be used to disinfect the pond.
4. Timely harvesting
Control the size and density of stocking well, and then have a good management method. Generally, after about 3 months, it is almost time for harvesting. When harvesting, first drain all the water from the pond, then place cages with feed in the pond or use fishing nets to catch them. When harvesting, catch the large ones and leave the small ones so the juvenile fish can continue to grow. After harvesting, refill the pond with water and disinfect it. According to the number of juvenile fish, appropriately stock another batch of fry to ensure the later harvest volume.
The above is a brief introduction to the management measures for farming catfish. Compared with the fish we commonly see in daily life, catfish are somewhat better because they are not only rich in nutrients but also have certain therapeutic effects for people with weak constitutions. They can also be used to promote lactation and can nourish yin and blood. They are a fish with relatively high economic value. That is all for today's introduction. This article is for reference only, and we hope it is helpful to everyone.