This species has the biological characteristics suitable for cage culture: A clustered, non-perishable species of summer fish, or adult fish, are clustered. B omnivorous, artificial breeding of seed can eat fish can also eat artificial feed, C, bulimia, Alice mouth red? Snatching is fierce, fast growth. The following is a brief introduction to the breeding techniques for the following: 1. The conditions of the waters in cages in the water area can be reservoirs, or they can be wandering around, or even larger ponds (generally more than 50 acres, with enough water depth, such as more than 2 meters), but no matter what the water surface is The water quality must be non-polluting, the ph value should be 5.7-8, and alkaline and high-strength water bodies should be avoided. For the ponds that use clear lime to clear ponds, the ph value must be tested. The ph value must be 8.5. 2, cage structure and set mesh size to be determined according to the size of the fish. The cage is better than knot-free nets, and the size of the mesh is adjusted according to the growth of the fish. Sizes from 8 square meters to 100 square meters are available, and large cages are preferred for adult fish breeding (note that it must be sealed). According to factors such as the shape of the squeaking mouth, character storms, and the size of the fish species currently on the market, especially the cultivation of fingerlings, we can begin to consider the use of summer mesh cloth to make cages. Water body, so that the box does not hurt the species. Take bamboo as a floating frame and bricks as sinker. The box distance is about 7 meters. 3, fry stocking Alice mouth red? Adult fish cage culture, in Jiangsu, Zhejiang and Shanghai on the start of eating, so fish stocking should be as soon as possible, you can fight for the earliest aquaculture. In general, the stocking density of fingerlings depends on many factors. In general, the size of the fingerlings is more than 15 cm in total length, and the commodity rate in the year can reach 70% (500 g/tail) or more and the average meat multiplication factor is 30. Culter red? Reservoir cage culture production could reach 1-4 million kg / mu, can generally be put 20-150 fish / m (about 15-8 cm), to a certain hierarchical ladder when cut. The best breeding time is from November to March of the following year. At this time, the water temperature is relatively low, and the fish mouth is relatively weak. The activity of the fish species is relatively weak and will not skip excessively. The quality of the fish seed depends mainly on the integrity of the age slice. Aphrodisiac? Fish disinfection can not use malachite green and copper sulphate ferrous sulfate mixture, choose methylene blue and salt as well. Aphrodisiac? Summer flower cage breeding fish culture, summer flower stocking density according to water quality conditions, can put 2000-600 / square meter (4-2 cm or so), to a certain degree of reduction. In Jiangsu and Zhejiang, the stocking time is from the end of June to the beginning of July. At this time, the water temperature is higher, the fish mouth is red, and the fish species has a strong activity. It is best to choose the stock when the temperature is low. Generally do not disinfect. 4. Feed and Feeding Fish cages that have been artificially cultivated are now cultured in cages without domestication. In Jiangsu, Zhejiang and Shanghai, the fish is basically eating food throughout the year, as long as the water temperature is higher than 5 °C will feed, must be fed in time. Aphrodisiac? Fish cages are used for a variety of feed sources. (1) The use of live feed fish, of course, can be quantified by regular feeding of palatable feed fish; such feed has great benefits for disease prevention and improvement of adult fish quality (2) chilled fish, poultry waste and cocoons; This kind of feed can reduce feed costs and increase the scale of production (3) artificial compound feeds, mainly for Coptis rubrum; special expansion materials, but during the feeding process, the mouth is red, and it is strongly rushed to eat, taking care not to allow the expanded material to float out of the net. The box causes feed loss. Aphrodisiac? Adult fish cage culture, feed rate (0.5-7)%, feeding 3-4 times a day. Aphrodisiac? Summer cages cultured fingerlings culture, early to powder feed, box to prevent the feed floating box, feeding rate (12-0.5)%, feeding 5-4 times a day, time adjustment According to the fish's own situation and weather changes. 5, daily management must be recorded during the cultivation of fish eating, activities, weather changes, water temperature, cage cleaning in a timely manner, cleaning must be light to prevent red mouth fish? fish jumped and injured, monthly fish regularly Sampling inspection of body growth status, timely adjustment of the number of feeds for daily investment, feeding amount, etc.; at the same time, check the situation of cages and do a good job of preventing escape. When there is no need at ordinary times, generally do not go to activities near the cage, so as not to alarm the fish, causing the fish to jump excessively and get hurt. 6, disease prevention cage culture is a high-density farming methods, often cause disease, so to prevent all kinds of fish diseases, we must understand the drug problem; for example, we must pay full attention to Aphrodisiac? Farming just started, for many drugs Sensitive, the susceptibility of several common drugs is not the same as that of general freshwater cultured fish; in general, it is more sensitive than normal freshwater cultured fish. The following notes about the use of several common drugs are as follows: The resistance to various drugs is as follows: Trichloroisocyanuric acid> Formaldehyde solution> Quicklime> Salt. Safety concentration (ppm) as follows: 0.136,5.561,9.018, 895.4. (1) Quicklime is commonly used for the control of bacterial diseases, fungal diseases, and algae diseases. The usual concentration of 14-20ppm is used in production. The experimental results show that the safe concentration of quicklime is 9.018ppm, which is lower than the use concentration. (2) Trichloroisocyanuric acid is widely used for the prevention and treatment of bacterial diseases in fish. Its safe concentration is ppm, but the conventional spray concentration is 0.1-0.5ppm, so it should be used with caution. (3) Formaldehyde solution has a powerful insecticidal effect and is commonly used for the treatment of parasites such as protozoa, monoprotozoa, and anchor-head lice. The mouth red is also sensitive to formaldehyde solution, the safe concentration is only 5.561ppm, lower than the 10-30ppm used in the production, the concentration of 39.8ppm formaldehyde solution can cause 30% mortality, the lower limit of the lethal concentration 25.4ppm, so it should be used with caution.
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