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First, seed cultivation techniques
1, pond clearing. The ichthyosis punctatus seedling cultivation pond is generally suitable for 1-2 mu. It is not conducive to the cultivation of water quality. The depth of the pond is about 1.5 meters, and the sludge at the bottom of the pond is 10-20 centimeters. When the seedlings enter the pond, they must use quicklime 150. Kilograms are disinfected, and the seedlings can be put into the pond for feeding after the disappearance of the medicinal properties.
2, seedlings raised. Forktails? From the fry to adult fishes like clusters, so to hold, fry with yolk sac will be raised in the cement pool, ring roads and cages can be. The yolk-nutrient fry was hatched 1-2 days after the hatching of the film, and the feed was fed for 2 days after the raising of the fish, and zooplankton, such as larvae, were used to feed plankton. Feeding methods are used a small number of times, and fish fry species can be cultivated in the pond for 7-8 days.
3, stocking density. In the cage or concrete pond, the spotted fork tail grows to about 2 centimeters, and can be cultivated in the pond. It can be cultivated in the pond, or it can be polycultured with the white pelicans. In the case of single breeding, the main spot is the catfish tail, which is not associated with the white locust or about 15 days in the fry pond, and then with a small amount of white locust. The monoculture density is 30,000 per mu. When polyculture is conducted, the amount of white locust is equivalent to 15,000 for each mu.
4, feeding and fertilization. Before the fish is put into the pool, it is necessary to apply enough base fertilizer to fertilize the water quality. After the seedling enters the pond, it is fed with artificial compound feed or broken pellet feed until the seedling grows to 10 cm and then feeds the formed pellet material. It is generally concentrated feeding, with a feed rate of about 3%, and 1 vote in the morning and afternoon.
5, water quality regulation. When fish fry enter the pond, the depth of water is required to be 90 centimeters, and then deepen with the increase of the fish body until it is about 1.3 meters. Dissolved oxygen is required to be greater than 3 mg/L during the entire breeding period and the pH value is 6.5-8.3. Attention should be paid to the addition of new water to regulate water quality.
6, divided pool. The cultivar of the channel catfish is divided into two grades. It is advisable to cultivate 30,000 or so seedlings in the first grade. When the seedling grows to about 10 centimeters in length, two large-scale fish species will be cultivated in two pools in a timely manner. 7,000 or so.
Second, the adult fish culture technology catfish tail is a good variety with strong adaptability, in the pond culture, both the main breeding, but also polyculture, but the stocking turtles, alfalfa will affect the growth of the catfish tail, It is also best not to mix with grass carp.
1. Pond conditions. The conditions for ponds cultured with fish are basically the same, with an area of ​​1-5 mu and a water depth of about 2 meters. Ponds should be sheltered from the sun and have good water quality. The pH is 6.6-8.3, no pollution, dissolved oxygen is above 3 mg/l, and the clear pond is the same as conventional.
2, fish stocking. The size of the main fish species is 10-15 centimeters, with 600 or so per acre, and a small amount of white fish. Polyculture put 350 or so per acre and 200 white apes.
3, feed and feeding. Since the fish are omnivorous fish, it is possible to feed whole-priced compound feeds as well as single wheat bran, rice bran, fish meal and various kinds of pancakes during the entire adult fish rearing stage. Among them, it is better to feed the full-price pellet compound feed. The protein content of the batch material is required to reach 28%-32%, and the feeding amount is 1%-4% of the fish weight in the pond, and it is fed one time in the afternoon and the next in the afternoon.
4, water quality regulation. The water depth of the fish after entering the pool is controlled between 1-1.5 meters. With the increase of the water temperature and the increase of the amount of feed, the water injection will be 15 days, 10 centimeters each time, until about 2 meters. During the hot season, it is better to flush and change water to improve water quality and enhance the fish's feeding capacity. Weeds are often removed from the pond to reduce pests and diseases.
5, adult fish caught. The fish is easy to catch and can be arrested by pulling the net. Under normal circumstances, the rate of catch on the first net can reach about 50%, and 3 nets can be captured.
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The forked tail, also known as the gills, is a genus of maggots. Originating in the United States, it is a freshwater, warm-water fish with a wide range of adaptation, easy feeding, eating habits, large individuals, fast growth, high yield, tender meat, and high catch rate.