California perch culture technology how long is the culture cycle of California perch growth rate of California perch

Perch in our lives is a relatively large category of food, many people know that its nutritional value is very high and delicious, appropriate consumption of human health is very good. What people don't know is that there are many hot species of bass. California bass is a typical carnivorous freshwater fish and one of the most important game fish in the United States. How is it raised? Let's find out together.

Culture Techniques of California Perch

1. Breeding mode and seedling stocking quantity

There are two ways to culture California bass in ponds: polyculture and monoculture. Mixed culture can be carried out by using adult fish pond, parent fish pond or fingerling pond. Usually choose to produce 300-400 kg per 0.067 hectares of medium and low yield adult fish or fingerling pond, mainly to use the natural bait fish in the pond, per 0.067 hectares can put specifications of 3-5 cm California bass summer flowers 20-50. Pond yield California bass, species specifications should be enlarged some. California bass of 8-10 cm in size are generally accepted. 1 000-2 000 fish were bred every 0.067 ha. After 5 months of breeding, the average size of fish was more than 250 g at the end of the year.

2, bait and feeding methods

The key to raising California bass is to have enough palatable bait fish. At present, the main ways to solve the problem are: firstly, using fish ponds to cultivate silver carp and bighead carp seedlings; secondly, using mature fish ponds to block part of pond bodies with nets to cultivate small fish; thirdly, purchasing wild miscellaneous fish; and fourthly, purchasing special compound bait. California bass is a fierce fish that feeds on live fish. If the feeding amount of live fish is calculated by mantissa, it can be fed 2-3 times the stocking amount. If calculated by weight, the daily feeding amount is generally 10%-12% of its total body weight.

3. Feeding management

We should mainly do a good job in water quality management, water level management and fish pond environmental management. California bass is a fierce fish that likes to eat animal food. Requirements for fresh water, dissolved oxygen rich. Therefore, in the whole breeding process, the water quality should not be too fertile. Especially in summer and autumn, due to feeding a large number of bait, it is easy to cause water quality deterioration, we must insist on regular water change, injection of new water.

4. Fish disease control

California bass in the pond culture process, generally less disease. At present, the fish diseases found mainly include: water mold, furuncle disease and anchor head flea and other parasitic diseases. Salt solution bath has higher effect on water mold and furuncle. For Anchorocephalus and other parasitic diseases,(0.5-0.67)×10-6 trichlorfon can be thrown into the pool, and the control effect is ideal.

How long is the breeding cycle of California bass

Generally speaking, it takes about half a month to feed and acclimate California bass from box to adult fish culture and 4-5 times of box screening. Each box screening takes 5-7 days to carry out the second time. When the adult fish reaches 0.5-1 kg, it meets the requirements for marketing. So we can calculate that the breeding cycle of California bass is about three months.

California bass growth rate

California bass growth rate is different, and everyone in the breeding process of conservation has a relationship, and after one month of breeding often appear uneven phenomenon, larger individuals will prey on smaller individuals, should be timely different sizes of fish breeding, up to the market specifications timely catch and sell. Therefore, the following points must be paid attention to during fry breeding:

1. The fry stocked in the same pond should be hatched in the same batch to make the fry size consistent.

2. When the fry grow to about 3 cm and the scales are relatively complete, it is necessary to pull the net to catch and screen, and cultivate them in three pools according to the three levels of large, medium and small. In the future, the cement pond should be drained every 10 days and every 20 days. It is advisable that the fry stocked in the same pond should have less than one time of weight difference.

3. California bass has a strong appetite, and the daily food intake of juvenile fish can reach 50% of its own weight. It must be fed regularly and quantitatively to ensure that enough food is supplied, so that smaller individuals can also be full.

What problems do you need to pay attention to in breeding California bass?

1, daily inspection of fish ponds, observe fish activities and water quality changes, to avoid too turbid or fertile water, transparency to 30 cm is appropriate. Find problems in time and take measures to solve them.

2. Strictly prevent pesticides and pollution substances from flowing into the pool to avoid the death of fish in the pool. In particular, juvenile fish are extremely sensitive to pesticides, and a very small dose can cause the death of the whole pond fry, which must be paid great attention to.

3. Feed amount should be appropriate, avoid excessive or insufficient. At the same time to avoid long-term use of a single feed, feed should be added vitamins and minerals to maintain normal nutritional requirements.

4, timely grading, about once every 2 months, the same specification of fish in the same pool stocking, to avoid big fish eat small fish. The separation work should be carried out in the morning of good weather, and it is forbidden to separate when the weather is hot or cold.

As can be seen from the above, California bass grow very fast and prey very fiercely. If the feed is insufficient, the larger bass will kill the smaller bass. Therefore, we should often patrol in the breeding process, and timely divide the ponds for the bass with different physiques.