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Grass carp cage farming high returns
The rapid adoption of cage culture grass carp technology must master the following technical points, both less investment, effective and fast, and high income. In this case,
First, the waters of choice. Select the reservoir, river and other larger water bodies. Cages should be located in sheltered sunny, clean water, a small water flow, depth of 2.5-3 meters, 6 meters offshore place. Cage spacing of 3.5 meters. In this case,
Second, the fish put. Mainly to grass carp, amino acids, green, bream, silver carp, bighead carp, carp and so on. Each cage put 250-300 grams of grass carp species specifications 600-800 (silver carp put not more than 10). Fish species must be robust, disease-free, harmless, uniform size. Before stocking with 3% -4% salt water immersion fish body 5-15 minutes, and injection of grass carp hemorrhage vaccine. In this case,
Third, feed feeding. The general stock to feed ryegrass, sudan grass-based. However, after the fish under the box, if the water temperature is low, should be fed with cooked sweet potato mixed with rice bran or wheat bran, or feeding fish with pellet feed to keep fat long. Water temperature is normal, should ensure that adequate supply of forage every day, and regularly feed a small amount of sugar, wheat bran, soybean meal and so on. In the forage shortage, can also be fed some fresh leaves. Feeding to the timing (8-9 am, 2-3 pm) quantitative (generally in the total weight of 1.2-1.5 times), positioning (fixed cast in the feed box). In this case,
Fourth, strengthen management. Fish before and after the next box, to check the cage for holes, to prevent species escape; often remove the net clothing attachments, to avoid mesh blockage; feeding before the leftover food to be left out of the box; With the increase in feed, feed range should be increased; high temperature season, should be in the cool morning or evening feeding, and in the feed box to take a pergola on the shelves to be placed on the surface, , To avoid the sun drying hay, to facilitate the fish to eat, increase appetite.
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