Methods and techniques of sea bass breeding

Sea bass , also known as striped sea bass, sea bass, seven-star sea bass, etc., has delicious meat and is one of the common economic fishes. It is mainly distributed in the coastal waters and estuaries where seawater and freshwater meet along the coast of my country. The market demand is large, and now there are many farmers engaged in artificial breeding. Below, I will introduce the methods and techniques of sea bass farming. Let’s take a look.

1. Pond selection

Choose a place with abundant water resources, fresh water and no pollution to build a pool. The pond area should be 3300-6600㎡, the water depth should be more than 2m, and the north-south direction is better. Inlet and outlet pipes should be buried at the bottom of the pool. It should also be equipped with 1-2 1.5-kilowatt aerators, and the farm should have a backup power generation unit. When building a pond, it is necessary to go through the stages of drying the pond, dredging the pond, and exposing it to the sun. One week before stocking, 50 kg of quicklime or 5-10 kg of bleaching powder can be used per acre for disinfection by spraying in a dry pond.

2. Fish stocking

Currently, most sea bass fry are caught at sea. In spring, the sea-caught fry are about 2.5-4 cm in size. After the fishing and transportation operations, the fish bodies will be injured to varying degrees. In order to improve the survival rate of aquaculture, they can be temporarily raised first. It is more convenient to set up a 40-mesh cage in the breeding pond for temporary rearing. 2000-3000 seedlings are temporarily raised in every cubic meter of water. Feed Artemia larvae or marine and freshwater hornworms and copepods for the first 10 days, and then feed fresh fish paste. When the fish fingers are grown to about 10 cm in length, they are stocked into the grow-out pond at a rate of 1.5 fish/㎡.

3. Feeding management

The bait is mainly low-cultivation fish, supplemented with artificial ingredients. Sea bass grab food quickly and eat large amounts, so it is important to feed them at regular intervals and in regular quantities. When feeding, make sure the fish are full without wasting bait. Each time you feed, feed a small amount first to lure the fish to float up to grab food, then increase the amount of feed . Stop feeding when the fish sink and stop grabbing food. It is recommended to choose floating feed, or feed 100 crucian carp and 30 silver carp and bighead carp per acre to reduce water pollution and increase aquaculture benefits.

The number of times and amount of bait fed per day varies depending on the season. In the season with suitable temperature for rapid growth of sea bass, feed 4-5 times a day, and the feed amount is 10-30% of the fish body weight. In the early spring and late autumn with low temperature, feed 2-3 times a day, and the feed amount is 1-10% of the fish body weight.

4. Daily management

During the feeding process of perch, a lot of leftover bait will be left, affecting the water quality, so the leftover bait in the water should be cleaned up in time and new water should be replaced regularly. In the later stage of breeding, the pond should be inspected frequently, new water should be injected frequently, and aerators should be used reasonably to increase oxygen. And the amount of feed fed every day must be controlled to ensure that the sea bass is 80% full.

5. Scientific disease prevention

Sea bass is prone to enteritis and hepatobiliary syndrome. The amount of feed is the key to reducing the occurrence of the disease. It can avoid water pollution and reduce the occurrence of enteritis. When enteritis occurs, mix bait with broad-based antibiotics and feed it to the fish. The fish will recover in about a week. However, hepatobiliary syndrome has a great impact on the production of fish and can cause metabolic disorders. Chinese herbal medicines should be added to the feed to prevent the occurrence of diseases.

The above are the methods and techniques of sea bass farming. Farmers need to conduct inspections several times a day to observe problems in the breeding ponds and deal with any abnormalities in a timely manner, mainly including water quality, sea bass activity, escape prevention, and disease prevention.