Introduction of grass pulp fish culture technology
Peanuts such as water peanuts and water lettuce can be obtained through mechanical processing. The fine particles can be eaten by filter-feeding fish and the coarse-grained particles can be eaten by herbivorous fish. Under the action of bacteria, straw pulp can be converted into nutrients needed by phytoplankton, and the reproduction and growth of phytoplankton provide more abundant food for fish. Therefore, the use of grass pulp for fish farming has a dual role of feeding and fertilizing, and it can serve two purposes.
Using grass pulp fish, as long as 120 kg ~ 180 kg of water plants can be cultivated 10,000 beta fry, about 10 kg of straw equivalent to 1 kg of soybeans feeding effect. In the aquaculture production dominated by cockroach, squid and tilapia, most of the concentrate feed can be replaced with straw pulp, and the feeding effect is equally good. Now the methods for pulp culture of fish are described as follows:
First, beating
Wash the plants first and sterilize them with bleaching water. Because water peanuts contain saponin toxin, if the herb contains water peanuts, it must also be added to the forage to remove toxins. As much as possible, the grass pulp is beaten with a feed crusher because the finer the grass granules are, the longer the suspension time in the water is, which is more conducive to the feeding of fish and reduces the amount of sedimentation on the water bottom so as not to damage the water quality. In the process of beating and feeding, attention should also be paid to a small number of times, and water grass and water should be in proportion to each other.
Second, feeding
The feed amount of straw pulp can be flexibly grasped by the changes in fish growth, weather, and water quality. In general, 50 kg to 70 kg of straw can be fed per mu of water per day. Every day, every afternoon, feed 1 time, feeding should be evenly spilled in the whole pool, in order to facilitate the fish to fully feed, improve the utilization of straw. If a proper amount of concentrated feed is added to the straw, the feeding effect will be better.
Third, management
After feeding the straw, keep plenty of fresh water and regularly splash lime water for sterilization, disinfection and disease prevention
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