CATDOLL : CATDOLL: What should we pay attention to when breeding adult freshwater cod? How can we improve the breeding technology?

1. What should be paid attention to in the breeding of adult freshwater cod? How to improve the breeding technology level?

Adult freshwater cod can be raised in open ponds, cages and industrial farms. Currently, open ponds and factory farming are mainly used. The outer pond farming area is generally 5-20 acres, with a water depth of about 3 meters. Water intake and drainage should be convenient. The power of the aerator is set at 0.6 kilowatts per acre. Cement pools are generally used for factory farming, with an area of ​​50-500 square meters, a water depth of more than 1.2 meters, and an aerator power of 5 watts/square meter. Shading and heat preservation can be carried out according to the needs of farming.

When the size of freshwater cod fry reaches more than 3 cm, the fish have begun to consume artificial compound feed and can be put into breeding ponds for adult fish breeding. The stocking density in the outer pond is generally 1500 ~ 3500 fish/mu. The breeding density depends on the breeding conditions, and the factory breeding density is 20-25 heads/square meter.

The pellet feed in the seedling stage requires crude protein ≥45% and fat ≥8%; in the adult fish breeding period, the crude protein of the feed is ≥32% and the fat is ≥6%. Feed at 6:00, 10:00 and 17:00 every day. Observe the fish's food intake and master the daily food intake. The general food intake rate in the seedling stage is 4% to 5%, and the food intake rate in the adult fish breeding period is 3% to 4%. After 12-15 months of breeding, when the body size reaches more than 500 grams per tail, it can be put on the market.

Pay attention to water quality control, regularly monitor various water quality indicators, control dissolved oxygen above 6 mg/L, pH between 7.5 - 8.5, ammonia nitrogen < 0.5 mg/L, nitrite < 0.1 mg/L, and focus on water quality. Probiotics such as lactic acid bacteria, bacillus, and photosynthetic bacteria are often dispersed. The water quality should be rich, active, tender, and cool to promote the healthy growth of freshwater cod.

In daily management, dissolved oxygen should be maintained above 6 mg/l. In the breeding process, disease prevention must adhere to the principle of "prevention first, prevention and treatment combined". Water quality management and disinfection of breeding ponds should be done well every day to avoid illness caused by human infection. Accurate feeding management is the key to successful breeding. Feeding must follow the principle of "timing, fixed point, quantitative, and high quality" to feed in time.

The above are the key points about the breeding technology of adult freshwater cod. They are provided for your reference and learning. We hope they are helpful to you. Please forgive us for any shortcomings.

During the breeding process, attention should be paid to water quality, the water source should be changed regularly, and the water should be kept sufficiently oxygenated. It is also necessary to feed very nutritious feed, prevent diseases in a timely manner, and clean regularly.

Pay attention to the breeding density and be sure to choose high-quality fish fry. During the breeding process, you must pay attention to timely replacement of water resources to ensure the fertility and nutrients of the water. Pay attention to the combination of feed. You must have particularly strong basic theoretical knowledge and you can learn from people around you.

When planting any crop, the quality of the variety will affect the yield and quality, so when planting sorghum, you should choose high-quality and high-yield varieties with high yield, good quality, wide adaptability, and strong resistance to stress. Good varieties have high yield, good quality, strong adaptability, disease resistance, resistance to natural disasters, and resistance to lodging, and have incomparable advantages in crop production.

2. How is the freshwater cod market?

good.

1. Quality. The cod used in the freshwater silver cod market are all newly caught, very fresh, and of guaranteed quality.

2. Price. The price of freshwater silver cod in the market is 20 yuan per catty, which is very affordable.

3. What food does freshwater cod eat?

Hello

Freshwater silver cod is an omnivorous fish and there are many baits to choose from. Generally, experienced anglers often use live creatures such as shrimps, earthworms, and loaches as bait. Red earthworms hung on fish hooks are the most effective bait.

Freshwater cod is an omnivorous fish that mainly feeds on small fish and shrimps. When fishing for freshwater cod, you can use shrimps, earthworms, loaches and other living creatures as bait. If conditions permit, it is best to use red earthworms hung on the fishhook as bait. Red earthworms are most attractive to freshwater cod, especially in June and July every year.

When fishing for freshwater silver cod, you should also pay attention to some tips. Different baits with different characteristics should be used for fishing freshwater silver cod at different angles. In the first half of the year, you should choose baits with strong odors, preferably with fishy smells. But in the second half of the year, you should choose baits with strong flavors, such as grapefruit seeds, which can attract freshwater silver cod to take the bait.