Barbs belong to the genus Cypriniformes, barbinae, spimibarbrs, commonly known as bamboo fish, bamboo fish, grass bale, big belly fish, and yellow crown fish. Produced in Guangxi's Gui River, Liujiang, Zuojiang, Youjiang. Barbs, which are characterized by rapid growth, miscellaneous eating habits, strong living ability, high rate of catching and survival, and delicious meat, are one of the high-quality economic fish and are well received by consumers and farmers. Feeding barbs, seedlings cultivation is an important technical link, and now based on the three years of fry cultivation experience of the Institute summarized as follows: 1. Requirements for nursery ponds: fish nursery pond to sunny, ventilation is more ideal, convenient water, fresh water, pool shape Rectangular, watertight, an area of ​​667 ~ 2000m2 is appropriate, in order to facilitate the operation, fry pool water can maintain 1.0 ~ 1.5m as well, too easy to be affected by the external environment, too deep water is not easy to control, the temperature is low. 2. Clear pond: Before the fry pond is cleaned, the clear pond is the key to the success or failure of fry cultivation. There are many medicines in the clear pond, such as quick lime, tea bran, bleaching powder, and strong chlorine extract, among which the clear pond can be used. And dry method clear pond two methods, dry clear pond can be in a hurry, drug toxicity disappeared quickly, the amount of quicklime 25kg/667m2; bleaching powder 5kg/667m2; strong chlorine fine 1kg/667m2. Increase the use of clear ponds by 3 times. The conditional ponds are better for a period of time after the ponds have been cleaned. If the water clear pond, it needs to be toxic after 7 ~ 10d disappeared. ? 3. Fish fry pond: The fish is injected into the filtered water 2 days before the lower pond, water depth 0.8 ~ 1.0m. If it is unclear whether the toxicity of Clear Pond has passed, try the water by setting a small cage in the pond and then putting 50 to 100 fish in the lower pond. After observation for 10 to 12 hours, there will be no coma poisoning. You can. The barbs are small in size, tender and slow in movement, and they avoid being attacked by water blisters in the water and causing injury or death. • The following items should be paid attention to: (1) Natural seedlings to be harvested should be uniform in size. (2) timely release seedlings. When the fish is in the pond, pay attention to the difference between the water temperature in the oxygen bag and the pond water no more than 2°C. If the temperature difference is large, the fry bag will be placed on the surface of the pond first, and the seedlings will be released after about 30 minutes. When the fry are under the pond, the number of fry in each pond must be enough for one time, and it cannot be replaced every other day. The action should be light. The fry should be placed 1 to 2m away from the shore of the wind to avoid the pond in the rain. (3) An aerator is to be opened at night after the fish is under the pond to avoid death due to lack of oxygen. ? 4. stocking density: stocking density according to different breeding specifications, time, cultivation methods and manpower to determine, general stocking 10 to 120,000/667m2, such as breeding 2 ~ 3cm specifications can be put 12 to 150,000/667m2 . 5. Daily management: ? (1) feeding bait: barb? In the first 3 days of the pond, the fish is particularly tender and delicate, and it is very sensitive to the living environment. In order to increase the survival rate, the ponds can be fed with squid material along the pond for 5-7 days. The fry can feed directly, and the ponds can also be used to cultivate rotifers that are suitable for fish fry. Each day, 2 kg/667 m2 of rotifers are used. The fry can grow to 2.0-2.5cm after 7-10d incubation. Can also be placed peanut bran. However, it is easier to use cultivators and the survival rate is higher. After 10 days, the soaked pellets can be fed along the edge of the pond until the required specifications are developed. (2) During fry feeding, water injection in stages is an effective measure to increase the survival rate of the fry and promote its growth. The temperature of the shallow water in the early stage is prone to increase, and the decomposition of organic fertilizer is fast, which is conducive to the propagation of natural food. The new water should be added in the middle and later stages depending on the changes in the water color. It is necessary to keep the water “live, tender, and cool”. In general, the first time the fish is added to the pond after 5 days, water is added for the first time. After that, new water is added every 5 days, each times 15 cm. . ? (3) should adhere to the tour ponds every day, pay attention to the changes in water quality, I would like to have too much water, fish floating head and fish disease. 6. Fish Disease Control:? (1) Whitehead white mouth disease and white skin disease: use 0.5ppm strong chlorine or 1ppm bleaching powder to splash the whole pond once a day for 3 days; ? (2) Trichinosis: first use 0.7ppm copper sulphate and ferrous sulfate mixture (5:2) whole pond sprinkling, after the spill with 0.1ppm of mercuric nitrate spill (and prevention of small melon worms), this method should change the water after 2d, or water quality turns black. (3) Bubble disease: This disease usually occurs within 5 to 8 days after the sea flower pond (1.3 to 2.2 cm of fry), mainly because the pond water is more fat and the phytoplankton is too much, in the middle of the afternoon under strong sunlight, High water temperature, algae photosynthesis is vigorous, causing over-saturated dissolved oxygen in water. The symptoms are air bubbles in both fish eyes and dorsal fins, which cause the fry to float on the water surface. In combination with the high temperature of the water table, the fry are “stained” to death. Solution: Add fresh water in a timely manner to keep the water fresh and avoid excessive phytoplankton breeding. (4) Scab disease: This disease is the most harmful to fry. Found small melon worms can be used 0.1 ~ 0.3ppm mercury nitrate Quanchiposa, continuous 2d, the amount to be strictly controlled, excessive stimulation of the fry's nerves caused by malformation, the amount will make the small melon worms produce resistance and not easy to further treatment. If drug resistance occurs, use 1ppm copper sulfate and ferrous sulfate mixture (5:2) to splash the whole pond. After 3 days, continuously inject fresh water while draining the old water. Spill 0.15ppm malachite green after 2d water stop. . The fry can grow to 3~5cm after being cultivated for 30~45d, and can directly enter the adult culture pond or winter the pond. By February of the second year, the body was 9 to 10 cm in length, and the survival rate was 86%.

Herbal Extract

Plant Extract,Pine Pollen Powder,Natural Food Coloring,Ginkgo Biloba Extract Powder

Youth Biotech CO,. Ltd. , https://www.youtherb.com