Bream farming techniques

Squid, alias: White Stork, White Stork, River Stork, Stork, Blue Stork, Wind Stork, Japanese Stork. Carp refers to the generic name of the species that belongs to the order of the catfish. Also known as cockroach, it is a fish that looks like a long snake and has the basic characteristics of fish. In addition, salmon and salmon have similar migratory characteristics. Carp is a fish, like snakes, but no scales, generally produced in the saltwater and freshwater junction.

First, the farm conditions

1. Water sources: Rivers and lakes dominate the plains, and streams and springs dominate the mountains. It is better to have groundwater to facilitate the extraction of deep well water. Because of the large amount of water consumed by the farms, the amount of water must be sufficient. Generally, about 1 kilograms of edible mantis needs about 25 cubic meters of water, so it is based on the design. The suitable water quality is pH 7~8, transparency more than 20cm, no industrial sewage hazard.

2. Power supply: The farm needs ample power, and aerators with a power of 1 kilowatt per acre are generally required. A breeding farm with an annual output of 100 tons of edible alfalfa needs at least one 150-kilovolt transformer, and it must ensure that there is no blackout year-round.

3. Others: Soil is best constructed with loam, terrain is flat, and the climate is warm. If the thermal drainage of a thermal power plant or hot spring water can be used, the benefits will be more obvious. In addition, it is required that the water and land transportation be convenient to transport feed and merchandise.

Second, raising a pond design

Currently, there are two kinds of open-pit hydrothermal-type and waste-heat-type water-flow systems in China. The main points for building a pond are as follows:

1. Open-air hydroponic ponds: Use natural water such as rivers, lakes, reservoirs, and groundwater as the water source. The pool is low in cost and consumes less electricity. However, the output is low, and the average yield per mu is only 1-2 tons. This is currently in China. The main farming methods are generally 50 acres of water. The ponds are reared according to the different specifications of the carp, usually divided into one, two, three, and four types of pots. The pool shape is usually round or elliptical, and the injection and drainage ports are opposite to each other, and the anti-escape facilities are set, and a food shed is set up on the side of the pool facing the sun.

2. Warm-water cultivating pool: It is required that the water temperature should be controlled at a temperature of 27°C which is the optimum temperature for the growth of the pupa, and it should be cultured with flowing water. Its advantages are less disease, rapid growth, and high yield. It is a relatively advanced breeding method.

Third, breeding technology

The cultivation of edible quail is a process in which a glutinous rice cultivar weighing about 20 grams is cultivated into a commercial mash weighing 150 grams. Farming methods can be divided into monopoly, polyculture and collocation. The key lies in feed feeding, water quality management and disease control. Feeding requires quality, positioning, quantification, and timing. Water quality management should focus on the development and control of water quality to prevent water changes. The normal water quality of the rearing pond is tender green with a transparency of about 20 cm and a pH of 7.5-8.5.

1. Fresh feed: The commonly used fresh feed for raising clams is silkworm clams, beautiful clams, sword clams, chironomid larvae, river clams, yellow clams, snails, small fish, shrimps, and animal organs. The effect of fresh feed is better. it is good.

2. Formulated feeds: Compound feeds should be formulated according to the nutritional requirements of different growth and development stages of the alfalfa, and they are ideal for developing alfalfa breeding because of its advantages of complete nutrition, convenient storage and economic benefits.

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