How much can silver carp and bighead carp grow a year without feeding?

Silver carp and bighead carp have different growth rates in different growth cycles. However, in the natural environment, the main food of silver carp and bighead carp is plankton. As long as there are enough plankton in the environment to ensure the food source of fish, it is no problem to be one year old 1~2 kg.

Silver carp (Aristichthysnobilis) is also called silver carp, silver carp, Baotou fish, bighead carp, black silver carp (also called silver carp in some places) and male fish. It looks like a silver carp. Side flat. It is a freshwater fish. The head is large and wide, and the length is about 1/3 of the body length. The mouth is also very wide and slightly upturned. Low eye position.

Raising silver carp and bighead carp is mainly suitable for some lake areas. Take Dengjin Village, Jieshou Town, Gaoyou City as an example. More than 670 mu of net water surface in this village adopts the culture mode of raising silver carp and bighead carp by river crabs. Only silver carp and bighead carp can increase the income by about 6,543,800 yuan at harvest.

The lake is surrounded by two layers of polyethylene net, the net is about 2 cm, and a layer of dense mesh net is sandwiched in the middle to prevent the river crab from escaping. Pebbles are used as sinkers at the bottom of the net, and sediment of 10- 15 cm is buried at the bottom of the cage and covered. Surrounded by bamboo piles and plastic film fences, the height is about 50 cm higher than the highest water level in the lake area. When aquatic plant resources are scarce, aquatic plants can be planted in the lake area.

Before releasing live snails in Qingming, release live snails 150-200 kg per mu to provide natural active feed for river crabs.

Source: Silver Carp and Bighead Carp Baidu Encyclopedia Web page link