A, Pelteobagrus fulvidraco breeding technology requirements
1, pond treatment: breeding Pelteobagrus fulvidraco pond depth control in the 1.5-2.5m between (suitable depth of 2m), remove the bottom of the pond too much silt (silt thickness is generally not more than 10cm), in the sun for a few days, disinfection. 10-15 days before stocking, use 50-75kg of quicklime or 7-10kg of bleach per mu of pond to sprinkle the pond. After a few days, apply 50-200kg of decomposed organic manure per acre of pond to cultivate plankton in the water body. In addition, the pond needs to be equipped with oxygenator and other mechanical equipment. 2, fish fry: March-April, the water temperature stabilized at 10 ° C when stocking Pelteobagrus fulvidraco fry, the specification of the fry is generally more than 20g / tail, the stocking density is generally 2000-3000 tails / mu. Before stocking, select the fry with strong physique, no injury or disease, and complete body, and then soak and wash them with 3-5% salt water for 10-15 minutes. Before stocking, float the container with the fry in the pond water body, and wait until the water temperature of the two is close before stocking. 3, feeding: feeding twice a day, the first time at 6 pm, feeding 3/5 of the daily amount of feeding, the rest of the night at 10 pm feeding. before May, feeding feed amount of 2-2.5% of the weight of the fish; June-August, feeding feed amount of 4-5% of the weight of the fish; September-October, feeding feed amount of 1-2% of the weight of the fish. The feed required protein content of 35-45%, crude fat 5-8%. 4, water quality: maintain water transparency of 35-45cm, PH value of 6.5-8; May-June period, once a month to change the water, each time the injection of new water about 30cm; July-September period, every half a month to change the water, each time the injection of new water about 15cm, to maintain the depth of water at about 2m. Sunny days at noon when the use of aerators will be aeration of the pool water for 2 hours, so that the water body dissolved oxygen concentration to maintain more than 3mg / L. 5, disease prevention: regularly stir the pool bottom silt with a wooden stick, the bottom of the pool gas discharge; appropriate application of EM bacteria, bacillus, photosynthetic bacteria and other biological agents, to maintain good water quality, reduce the chances of disease.Two, how long is the breeding cycle of Pelteobagrus fulvidraco
1, the breeding cycle of Pelteobagrus fulvidraco is usually about 12-13 months, if the environmental temperature is suitable, the breeding cycle will be shortened, usually about 12 months, if it is the area with lower weather temperature, it usually takes about 13 months of time. 2, in addition to the effect of temperature, the type of breeding will also affect the breeding cycle, if all the breeding is male fish, the breeding cycle is generally 10-11 months. 3, the higher the protein content in the feed, the faster the growth of the yellow croaker, and the shorter the culture cycle.