How much is Huang Kui per jin? What are the breeding techniques? What do you need to pay attention to?

Yellow carp, belonging to the order Clariformes, Ctenopodidae, is a kind of fish of the genus Pelteobagrus. Distributed in the Pacific water systems of eastern China, it is a typical wide-feeding fish. So how much is Huang Jing per jin? What are the breeding techniques? What do you need to pay attention to? Let's learn about it together:

How much is Huang Kui per jin?

The price of Pelteobagrus fulvidraco varies slightly according to its size. Generally, the price of a single fish weighing less than 50g is about 10 yuan per jin, the price of 50-150g Pelteobagrus fulvidraco is 10-15 yuan per jin, and the price of Pelteobagrus fulvidraco weighing more than 150g is about 15 yuan.

What are the breeding techniques?

1. Pond preparation

Choose ponds with suitable area, good water retention and convenient entry and drainage. Drain the pond water before releasing the fish, level the bottom, remove too much silt, remove the weeds on the edge of the pond, clean the pond thoroughly with 150kg~200kg quicklime per mu, use 200kg mature manure as base fertilizer after 5d~7d, add water for about 1.5m, and release seedlings when there are more zooplankton in 7d~10d.

two。 Seedling stocking

The specification of stocking is 3cm~3.5cm. The stocking density should be suitable, when the density is too high, it will affect the specifications of adult fish, and it is easy to cause inconsistencies in specifications, and it is easy to cause disease, and it is difficult to increase the yield, which increases the cost; if the density is too small, although it can obviously improve the specifications out of the pond, but the pond is not fully utilized, and the yield is difficult to increase, which also affects the benefit. According to our experiment, it is suitable for stocking 4000 ~ 6000 per mu. Disinfect the fish about 15min with 10g/m3~15g/m3 potassium permanganate or 2.5% salt water before the seedlings are planted in the pond.

3. Bait feeding

Pelteobagrus fulvidraco has the habit of feeding in groups when it is small, and the fry are domesticated when they first enter the pond and form the habit of eating at a fixed point, which can improve the utilization rate of artificial feed and increase the feeding intensity of Pelteobagrus fulvidraco. The feeding habit of Pelteobagrus fulvidraco is omnivorous and partial carnivorous, and the feeding process should be mainly fed with artificial compound feed (full-price artificial diet containing appropriate amount of protein is a measure to ensure the rapid growth of Pelteobagrus fulvidraco), and part of fish meat, snail clam meat and animal scraps should be fed per 3d~5d to supplement the animal protein needs of Pelteobagrus fulvidraco. The feeding amount should be adjusted timely according to the water temperature and weather conditions and the activity of the fish, which is generally 3% to 7% of the body weight of the fish. Strictly follow the feeding principle of "four determinations" when feeding.

4. Water quality management

In the process of breeding, new water should be often injected, when conditions permit, the pond is equipped with impeller aerator, and when the dissolved oxygen is low, it is turned on to increase oxygen. Adjust the water quality to be "fat, live, tender and cool". Transparency should be kept around 30cm. Regular determination and analysis of water quality.

5. Prevention and control of fish disease

Pelteobagrus fulvidraco is regularly fed with bait and sprinkled with topical drugs to prevent disease. Do a good job in daily management, often patrol the pond, find problems and solve them in time, and make good records.

Matters needing attention in culturing yellowtail:

1. Keep the water body with high dissolved oxygen. Pelteobagrus fulvidraco has higher requirements for dissolved oxygen in pond water, so mixed culture requires fresh water, sufficient dissolved oxygen, timely injection of new water in growing season, and frequent change of water in high temperature season, such as keeping micro-running water.

two。 Maintain reasonable stocking density and stocking specifications. According to the feed biomass of the water body, the proportion of mixed culture and the stocking specification should be determined scientifically and rationally. the general water body should be 30 ~ 60 tails, and the stocking specification is 3 cm / tail ~ 4 cm / tail. If the density is too large and the specification is too small, it will not be able to meet the listing specification at the end of the year.

3. After mixed culture of Pelteobagrus fulvidraco in ponds, it is no longer suitable for mixed culture of other carnivorous fishes, and it is not suitable for mixed culture of Pelteobagrus fulvidraco in the culture ponds of freshwater prawns and freshwater crayfish.

4. In the process of culture, if the size of Pelteobagrus fulvidraco is found to be too small, it means that the biomass of natural bait in the fish pond is insufficient, and we can properly supplement small miscellaneous fish and shrimp, summer flowers of domestic fish or feed the specially prepared Pelteobagrus fulvidraco bait. When feeding artificial bait, the main breeds should be fed first (in shallow water), and then Pelteobagrus fulvidraco (in deep water). Pelteobagrus fulvidraco has the habit of sleeping during the day and going out at night, so the bait should be mainly at night.

5. Mixed culture of Pelteobagrus fulvidraco in crab pond is easy to cause competition between river crab and Pelteobagrus fulvidraco because they are ecologically located in the same water layer. Therefore, sufficient natural food organisms must be kept in the crab pond, otherwise the feeding effect of Pelteobagrus fulvidraco will be affected. Can be put in advance in the crab pond 300 kg ~ 400 kg per mu and some crucian carp with eggs, green shrimp holding eggs, let them reproduce naturally for free feeding of river crabs and yellow catfish.

6. Analysis of the symptoms and causes of Pelteobagrus fulvidraco: the diseased fish are mainly 3-5 cm in size, with festering at the top of the head, redness and swelling, perforation, Gill congestion, hyperemia at the base of the fin, swimming alone or hanging vertically in the water head up and tail down for a long time, and rotate back and forth. The disease is caused by parasites such as rotifers. The causes of the disease are as follows: (1) the density is high, the feces and feces of young fish are increased, the water quality is poor, the fish is in a state of semi-hypoxia for a long time, and the activity space is reduced, which makes parasites, bacteria and other pathogens more prone to infection and parasitism. (2) when the water quality is polluted and the pH value of the water is on the low side, the probability of fish infection increases. (3) light prevention and serious treatment, lack of awareness of disease prevention, failure to check on time every month to prevent fish disease, regulate water body, improve water quality, encounter sudden changes in the weather, fish feeding, it is easy to outbreak of fish disease, a large number of deaths. (4) the feed protein content is low, which increases the feed coefficient, slows the growth of fish, and has more residual bait and feces, which causes the secondary pollution of water body and induces the infection of parasites and bacteria.

7. Prevention and treatment of Pelteobagrus fulvidraco disease: the purpose of medication: regulating water body, improving water quality, killing parasites, external and internal administration, comprehensive prevention and control of "a little red" caused by rotifer parasitism.