How to farm black carp for high yields? A detailed guide to practical farming techniques
As one of the four major Chinese carps, the black carp is mainly distributed in areas south of the Yangtze River basin in China and is a major farming species in lakes and ponds. As a traditional farmed species, it has always been favored by consumers on the market. So how should black carp be farmed to achieve high yields? Let's take a look at the detailed introduction from Qinnong Web.
1. Pond preparation work
The main farming method for black carp is pond farming. The pond requires an adequate water source, clean and pollution-free water quality, and a moderate area that should not be too large. The water depth should be kept at about 2.5 m, and the pond bottom should be level with little silt and should not leak or seep water. Before releasing the fry, drain the water empty, remove excess silt and debris from the pond bottom, and after freezing and sun-drying for half a month, add 20-30 cm of water, then spread lime powder over the whole pond for disinfection. Two to three days after disinfection, filter the water and fill it to a water level of 1-1.5 m. In addition, prepare several aerators and feeding machines to aerate in time and prevent deaths caused by oxygen deficiency.
2. Releasing the fry
Before releasing the fry, first select the fry. When selecting fry, choose fry with good spirit, strong vitality, no disease, no damage to the body surface, and a large food intake. Also, try to ensure the size difference of the selected fry does not exceed 3 cm, otherwise it is easy to cause food grabbing during farming and make the feeding amount difficult to control. After the toxicity of the disinfectant has dissipated, the fry can be released to prevent other fry from mixing in. The best time to release the fry is in January and February, because the water temperature is lower at this time and the scales of the fry are tighter, making body surface damage less likely. A polyculture model can be adopted when releasing the fry, combining bighead carp and silver carp. Silver carp and bighead carp can improve the bottom soil, help with water quality management, and promote the growth of black carp.
3. Feed feeding
To make black carp grow quickly and well, feed is an extremely important part. Choose artificially compounded pellet feed with a crude protein content of more than 30%. When feeding, a feeding platform can be set up to train the black carp school to float up and grab food. Feed little but add more often to ensure the black carp eat their fill and to estimate the food intake. After the training is successful, feeding can be carried out at fixed times and in fixed amounts, and then the feeding amount can be gradually increased according to the growth of the black carp. Note that too much should not be fed at one time, so as to avoid indigestion. During the peak growth season of black carp, the number of daily feedings can be appropriately increased to promote rapid growth.
4. Daily management
During farming, inspect once in the morning and once in the evening every day to check the water quality and the growth of the fish. The water quality should be regularly topped up and changed to meet the requirements of fertility, liveliness, tenderness, and freshness. Generally, the water color is slightly green and the transparency reaches 50-60 cm. Summer is a period of rapid growth for black carp, when their food intake and activity increase, but the high-temperature environment easily causes oxygen deficiency. Therefore, in summer, pay attention to the dissolved oxygen status of the water body, turn on the aerator in time for dissolved oxygen, and also do a good job of disinfection.
The above is the high-yield farming technique for black carp brought to you by Qinnong Web. We hope it can help you. To learn more about fish farming knowledge, please stay tuned to Qinnong Web.