Crucian carp culture yield

The yield of crucian carp can generally reach about 4000 jin / mu, which is related to water quality, stocking density and feed feeding. The density is adjusted according to different fish specifications. When the general specification is about 60g/, the release density is about 1600 / mu. Crucian carp can be mixed with silver carp and bighead carp, and the dosage of silver carp and bighead carp is about 10% of that of crucian carp.

The yield of crucian carp has a certain relationship with water quality, feeding density, feed feeding and so on. Generally, the yield of crucian carp cultivated with high density in ponds with good water quality can reach 3000-5000jin per mu.

1. Release density

The release density should be adjusted according to the area of the culture pond, the size of the fish school and the management status. The general density of fish species is about 8000-12000 pieces / mu. After a period of time, when the culture specification reaches 50-60g/, the density is adjusted to about 1500-1800 pieces / mu, and the specification is about 350-400g.

2. Mixed culture

Crucian carp can be mixed with silver carp and bighead carp, and the proportion of silver carp and bighead carp can be controlled at about 10% of the number of crucian carp. It is necessary to grasp the release time of silver carp and bighead carp, so as not to affect the domestication of crucian carp. In order to ensure adequate food intake of crucian carp, can not be mixed with carp, grass carp and other ferocious fish.

3. Domestication

The proper addition of some food attractants to the feed for crucian carp can not only increase the feeding area and quantity of crucian carp, but also shorten the domestication time. In order to improve the success rate of domestication of crucian carp, some mackerel with feeding speed and taste can be put in the pond.

It is easier to domesticate when the density is higher in the pond, and when determining the density, the water level in the pond can be lowered appropriately and the density can be increased, which can not only promote the success rate of domestication, but also improve the growth rate of fish shoals. After crucian carp can float and grab food on its own, a certain proportion of silver carp and bighead carp can be put into the pond.

4. Growth rate

The growth rate of crucian carp is different in different months, and the most suitable temperature for crucian carp growth is 25-29 ℃. From July to August, the water temperature is higher than 30 ℃, which affects the growth rate of crucian carp. The fastest growth rate of crucian carp is from September to early October.

The growth rate of different varieties is also different. at present, the more cultivated varieties are hetero-silver crucian carp, Pengze crucian carp and Xiangyun crucian carp, among which Xiangyun crucian carp has the fastest growth rate, followed by Pengze crucian carp, and Pengze crucian carp has the slowest growth rate. due to the good appearance of Pengze crucian carp, Pengze crucian carp is mainly exported at present.

5. Feed feeding

The adult crucian carp with the specification of 50-100g can be fed with the fish seed material, the crucian carp with the specification of 100-200g can be fed with the special material of crucian carp, and the crucian carp with the specification of more than 200g are mainly fed with crucian carp. According to the above feed feeding method, the normal growth of crucian carp can be ensured, and the feed feeding coefficient can be reduced to ensure the specification of commercial crucian carp.