Catfish farming technology

The squid, also known as white pheasant and white bream, is a rare species of freshwater fish. The meat is delicate, delicious, high nutritional value, there are medicinal effects such as detoxification, nourishing and nourishing. Mackerel has a rapid growth and strong adaptability. Even though it has little dissolved oxygen and other fish can't live in waters, it can normally live. Artificial breeding requires low technology and a wide range of feed sources. In recent years, a large number of fish farmers have conducted trout farming in earthen ponds and both have achieved high yield and high efficiency. In early spring, it is introduced into the quail species, which can be listed in the late autumn and early winter. Generally, 800 kg to 1,000 kg are produced per mu. Now the high yield and high efficiency breeding of earth carp and earth carp is introduced as follows:

First, pond selection and disinfection

The earthen ponds for breeding squid require ventilation and sunny, abundant water sources, and an area not to be too large. 0.8 to 1 meter wide water-living lotus or water peanuts are planted around the earthen pond and fenced with fences or nets to prevent the escape of squid. It can also be shaded to facilitate its growth.

Before stocking, the excessive silt in the land shall be excavated, the bottom of the pool shall be leveled, and the pool inlets and drains shall be repaired. In the 10 days to 15 days before the seeding of the lower pool, disinfection shall be carried out in a clearing pond of 100 kg to 125 kg of lime per 1,000 square meters. Thoroughly kill wild fish and predators. Then, the water was injected 0.6 to 0.7 meters deep from the first 5 days to the 7th day of the lower pond, and the water inlet was filtered with a 60-mesh sieve. In the end, Shiji Fei, generally per 1,000 m2, splashed and used 300 to 400 kilograms of fermented pig cow dung. After the water was light green or yellow-brown, it was put back into the earth so that he could eat enough natural food after going down the pond. About 15 days, the pool water will be deepened to 1.5 meters.

Second, the kind of processing and delivery

The optimum temperature for the growth of carp is 20°C to 28°C, and the water temperature starts to feed at 12°C. Therefore, the feeding time is generally from late February to mid-March. Before putting it into use, soak the bags in water for 20 minutes to 30 minutes to suit the water temperature. Only when the temperature difference between the inside and outside of the bag is less than 5°C can the bags be unpacked, and then use a small water basin to pour 2 pots to 3 pots of water in the bag. , so that the species from the high dissolved oxygen gradually adapt to the state of low dissolved oxygen. At the same time, it should also be carried out before the release of a variety of disinfection, every 50 kg of water with salt 0.75 kg to 1 kg dipping species 15 minutes to 20 minutes.

The species to be put on requires body coloring, grey hues, plump skin, elasticity, and active swimming. The specifications of the same species should be neat and tidy. Otherwise, the competition between the squid will affect the feeding of the weaker individuals. The stocking density is generally about 4000 to 5000 tails of about 20 grams of carp per 1,000 square meters; 50 grams of about 3000 to 4000 tails; about 100 grams of about 2000 to 3000 tails. At the same time, it is possible to mix 50 squid, 30 squid, and 200 tilapia per 1000 m2 of earthen ponds. On the one hand, it can filter and eat plankton, and eat the feces excreted by squid, which can purify water quality; on the other hand, It can also increase fish production.

Third, feed types and feeding

Artificial breeding of catfish mainly depends on special compound feed (commercially available), and 50 grams to 60 grams of multivitamin (vitamins a, b, c, e) and 1.5 kg to 2 kg of cod liver oil are added to each 50 kg of special feed (water temperature The cod liver oil should be stopped below 20 °C or above 35 °C). Juveniles are appropriately reduced and adulterated. If there is a temporary shortage of special feed, animal feed such as small trash fish, livestock and poultry, and silkworm cocoons can be used as a substitute for flour, and the crude protein content must be above 40%.

Carp is a carnivorous fish, bulimia. When feeding, we must implement the "four principles" principle, that is, qualitative, quantitative, timing and positioning. Qualitative: that is to ensure the quality of feed. The prepared feed must be soft and hard (1.2-1.3 times the amount of water added), fresh, clean, and not spoiled. Quantitative: The amount to be fed depends on the specifications of the carp, feeding, digestion, weather, water temperature, and water quality. In general, the daily feeding amount is 1.5% to 2.5% of the carp body weight. It is advisable to eat within 12 hours. Timing: The fish body is small in size and high in density. It is fed once a day at 8 a.m. and 4 p.m.; Squid size is above 100 g. Daily feeding is from 8 a.m. to 9 a.m. Positioning: The feed is placed on a fixed food table, and 2 to 3 food tables can be set for every 1,000 square meters of soil.

Fourth, daily management and disease prevention

Every morning and evening, the pool is patrolled to observe the activity and feeding conditions of the squid, and check the outlets after the rain to prevent fish from escaping. Normally, fresh water is filled once every 10 days to 15 days, once every 5 days to 7 days in summer and autumn, and the amount of water exchanged is about 10% of the whole pool. At the same time pay attention to the PH value between 7 ~ 8.5, when the ph value is too high should be replaced with new water, too low, then every 1000 square meters with 15 kg to 20 kg of lime adjustment.

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