Pengze crucian carp culture technology: fast growth, good meat quality and easy to reproduce

Pengze crucian carp

Pengze crucian carp, also known as Pengze crucian carp, Reed crucian carp, belongs to Cyprinidae, Cyprinidae, Carassius auratus, originated in Pengze County, Jiangxi Province, is one of the freshwater aquaculture species promoted by the Ministry of Agriculture. It has excellent economic characters such as large individual, fast growth, miscellaneous diet, strong disease resistance and high yield. it is generally welcomed by farmers and consumers all over the country, and it is a promising variety. Pengze crucian carp is a local population of crucian carp. Crucian carp is one of the important freshwater economic fish in China, which can account for about 30% of the catch in some natural waters. Pengze crucian carp has the following advantages:

The main results are as follows: 1. miscellaneous eating habits and strong environmental adaptability. It can be raised alone or mixed, and can be cultured in ponds, mountain ponds and cages. Feed on organic detritus and plankton in water, as well as commercial feed. The variety is genetically stable and has strong disease resistance.

2. Growing fast. The fry released in that year can grow into commercial fish specifications and appear on the market. Under the condition of mixed culture, the main fish culture is fed with commercial feed, and the individual can reach about 0.5 jin by the end of the year. In the case of no commercial feed for main fish culture, it can generally grow to about 0.25 kg.

3. Good meat quality, beautiful figure, high price and good market. The meat of this variety is delicate and delicious, with a protein content of nearly 17.1%. It is a nourishing food for pregnant women and patients, whose body shape and color is very similar to that of local crucian carp, and is very popular with consumers. In Meizhou, the market price of Pengze crucian carp remains at about 12 yuan per kilogram, 50% higher than grass carp.

4. The seedlings are easy to reproduce and the varieties are pure. It is not a hybrid, it is the application result of fish gynogenesis technology, and it is easy to protect the quality of species. As long as the correct operation methods and general breeding techniques are mastered, a better breeding effect can be achieved in seedling breeding.

In the process of feeding, in addition to strengthening daily management and selecting palatable formula feed, the following measures must be taken to further increase the yield of Pengze crucian carp.

1. Stocking healthy, disease-free and injury-free fish species to reduce the occurrence of fish disease and improve the survival rate. When the fish fry go into the pond, you can soak the fish fry with 5% salt water for 10 minutes or 0.5-1ml with thioether floxacin per cubic meter of water for 5 minutes to eliminate pathogens and harmful bacteria on the body surface to improve disease resistance.

2. The specification of fish stocking requires 4mur5cm, which is consistent in size, which is helpful to improve the survival rate and the quality of commercial fish. The survival rate of fish with 2Mel 3cm was 30% lower than that of 4MUR 5cm.

3. Reasonable stocking density is one of the measures to increase production, which is too sparse to make full use of pond water and feed, affecting fish production; if the stocking density is too high, the yield may be relatively high, but it will more or less affect the growth of other fishes, affect the total yield of fish ponds, resulting in small commercial fish and reduced economic benefits. The stocking density of conventional culture can be controlled at 15% of the total amount of seedlings, that is, 200 Pengze crucian carp seedlings per mu. In the case of commercial feed for main fish (grass carp), the average daily weight gain can reach more than 2 grams, calculated according to the survival rate of 80%. 0 per commercial fish. 25kg, 50kg per mu of harvested goods, 60kg. As the commercial value of this variety is higher than that of other mixed fish, under the condition of controlling the total amount of seedlings, the breed structure can be adjusted, the stocking amount of carp and mud carp can be reduced, and the stocking proportion of Pengze crucian carp can be increased to improve the economic benefit.

4. Optimize the water source environment and promote growth. The main environmental factors affecting fish growth are water temperature, pH (pH), dissolved oxygen, transparency and so on, while feed factors include organic detritus, plankton, formula feed and so on. In feeding, we should not only ensure adequate bait, but also make the water environment suitable for fish habitat. In the mixed culture pond, we must comprehensively consider the overall fish growth, strengthen feeding and management, reasonable feeding, timely water filling, and maintain good water quality.

In a word, Pengze crucian carp has good economic and social benefits in fish breeding and adult fish culture. Pengze crucian carp is an excellent variety which is easy to breed and easy to raise, which is worth popularizing.