There are new tricks for outdoor intensive culture

1. Hydro-grid strip feeding method This is a method of feeding a cylindrical strip of feed on a special fenced food table. The production method of the grid plate: take a thickness of 2, a width of 25 cm, and a length determined by the length of the feeding bait, and then drill a row of grid posts at a distance of 10 cm from the long edge, with a pitch of 1 cm (Generally, it is advisable that the child cannot climb in.) The thickness of the grid bar is about half the thickness of an ordinary bamboo chopstick, and it is 15 cm in length, and it can be nailed to the grid hole. After the board was made, it was placed on the edge of the pool with a 30 degree angle to the horizontal plane. The bottom of the board was 2 centimeters above the water, and the bottom of the board was covered with a row of cement tiles for crawling.
The thickness of the feed bar is based on the size of the gill. The general seedling stage (3-5 g) is 1-3 cm in diameter and coarse, the seed stage (50-200 g) is 3-5 cm in diameter, and the clam stage (more than 200 g) is 5-8 cm in diameter. You can. When feeding, the strips are placed on the material board. Afterwards, according to the growth of the roach, some of the gate screws can be gradually removed to increase the pitch so that the roach can feed into the head and neck. The advantage of this method is that the feed is in the water. Because Taichung is blocked by a fence, feed can't get into the water, and crickets can't just climb onto the feed board to scratch the feed. Because the feed strips are relatively thick, the feed will not spoil even with a bit of moisture, and when the food is eaten, it will bite and eat as much as possible, and will not spill the feed into the water, thereby reducing waste and water pollution. After 3 hours of feeding, any remaining feed is easily retracted. The feed board can also be wiped clean with a rag, because the board can grasp the amount of food, but also easier to adjust the amount of feed. Through experiments, feeding by this method can reduce the bait coefficient between 0.5-1 and the same number of water changes as the method of scattering particles on the feed table by about 1/3. It is a better water-feeding method at present. . This method is also suitable for outdoor intensive culture ponds.
2. Underwater cage feeding method in some temperature-controlled greenhouses with poor thermal insulation performance, large space environment change, and high humidity, since the water table feeding will affect the normal feeding due to the above environmental changes, underwater feeding can be adopted. law. However, in order to attain the goal of underwater feeding that is neither wasted nor eaten, the following conditions must be met: 1 The adhesiveness of the feed must be better than the water-fed feed, and the blisters should not be disintegrated within 4 hours; 2 it is better Water transfer facilities, underwater temperature control can be adjusted with high temperature water, such as when the pool water temperature below 29 °C can be used 33 °C warm water adjustment. In general, this method is more expensive, and it is heated directly by steam pipes under water. It is also useful to increase the temperature of the hot water circulating in the bottom of the pool; 3 to have good oxygenation facilities; 4 to use light energy to cultivate organisms in the water, so that the water has a better ecological environment; 5 must have Scientific and reasonable feeding methods; 6 such as lighting greenhouses in the pool is best to set a small sun back table.
Here are some specific methods for strip feeding in underwater cages. The first is to make feed boards. The feed board can be 33 cm in thickness, 12 cm in width, and the length is set according to the length of the pool at the feeding site. The method is the same as that in the water fence, but the cage must be fenced on both sides so as to avoid crawling into the feed plate when eating. For bad feeds, put a row of cement tiles at the bottom of the feed plate. Place the tile 15 centimeters away from the surface of the water. Place the feed plate flat on the cement tile after putting it in place. Press it to avoid turning or tilting the feed plate. Before feeding, the feed and water are mixed well with a mixer, and then the feed is used to make the same strip feed as the feed. When feeding, the feed can be placed on the feed plate flat. About 3 hours after feeding, the feed plate was taken out, the remaining bait was taken, and the material was wiped. This method is less polluting and the feed waste is less than direct scattering of particles on flat cement tiles.
3, outdoor intensive breeding pool feeding method Outdoor intensive intensive pool, can also use the above method, but it should also have the following conditions: First, catch rain shield on the material board; Second, when feeding underwater, The wild fish in the pool must be removed first.

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