The duckbill fish is very good, very skinny, but the first should pay attention to the oxygen content of the water, the second is to pay attention to its food, the following is my carefully organized duckbill fish feeding methods for you, take a look.
Duckbill rearing methods
1. Breeding site selection
Breeding site selection in the city in front of the Puddle Steep Reservoir. The aquaculture area has a large water area, the water depth is more than 6m, the dissolved oxygen is 6~9mg/L, the pH value is 7~8.4, the total hardness is 20~40mg/L, the ammonia nitrogen is 0.02~0.06mg/L, and the nitrite is 0.0015~0.01mg/L. The water quality is good, and it conforms to all the standards of GB1160 "Fishery Water Quality Standards" and NY5051-2001 "Pollution-Free Freshwater Foods All the requirements of the standard of water quality for aquaculture.
2. Net box setup
Net box setup refer to silver carp net box, choose plankton rich waters, require smooth water flow, sheltered from the wind and sunny, quiet environment net box frame using simple bamboo frame. The net box frame is made of simple bamboo frame, and the material of the net box is polyethylene knotless mesh. The net box specifications for 5m?5m?2.5m, mesh size 2.5cm. spoon-kissed sturgeon afraid of light, the surface of the net box with a black film cover.
3. Seedling selection
Select robust, swimming lively, neat specifications, disease-free and injury-free high-quality seedlings. The stocking density is 20~40 tails per square meter. Specification is 10~15cm, according to the spoon-nosed sturgeon seedlings are more sensitive to the characteristics of the water temperature change, the temperature difference should not be too large when the seedlings into the box, not more than ?2 ℃ is appropriate, try to regulate the same. Before entering the box, use 1.5% to 2.0% saline for 8 to 10 minutes to sterilize the fish.
4. Scientific baiting
Initial stocking to feed zooplankton (such as red worms) as the main, and then gradually domesticated to switch to floating granular bait, and supplemented with night light baiting. The bait is required to be fresh, not spoiled, nutritious, and palatable in size. Baiting follow? Four fixed? principle. When the water temperature is 20~30℃, the daily baiting rate is 1.5%~3%; when the water temperature is below 20℃, the daily baiting rate is 0.5%~1.0%. Specifically according to the feeding situation, weather, water quality and other timely high speed. The baiting frequency is 3 times a day, respectively 07:00~08:00, 11:00~12:00, 18:00~19:00.
5. timely split box
Spoonbill sturgeon growth rate is very fast, should be timely sub-specification cultivation, to avoid polarization, is conducive to improving the survival rate.
6. Diligent patrol box
a. Strict implementation of the morning, midday and evening patrol box system carefully observe the sturgeon feeding and activities, and fish out the residual bait in a timely manner. Regularly rinse the net box to prevent mesh blockage, affecting the exchange of water inside and outside the box.
b. Ensure the safety of the net box rainy days and stormy season, pay attention to reinforce the net box at any time. But also often check the net box has no damage, found damage in time to repair. The net box is also installed on the upper mouth of the black shade nylon cloth and anti-theft net.
c. Do a good job of daily record Daily record of air temperature, water temperature, baiting and the number of deaths. Discover abnormalities and take timely measures.
7. Fish disease control
Adhere to? The main focus on prevention, health management? The principle. Fry stocking and each time the box is divided with 1% to 2% salt or 0.4mg/L dibromo hydantoin and other drugs bath into the box, and every 20 days or so in the net box with 15mg/L quicklime and 0.3mg/L dibromo hydantoin splashing disinfection. The use of prohibited drugs is strictly prohibited in the waters around the net box.
1: The duckbill has a wide range of temperatures. It is not afraid of low temperatures, but can also tolerate high temperatures. In winter, even if the surface of the water is frozen, as long as there is still sufficient dissolved oxygen in the water, it can live in the water under the ice; in summer, the surface water temperature of the pond often exceeds 35?C, it can still grow normally!
2: Fast growth. The duckbill is one of the fastest growing freshwater fish. When the year hatched out of the fry rearing to the end of the year, each tail (exclusively) can reach 1.5 city pounds. Set of up to 2 pounds or more!
3: feed province. It is mainly eat zooplankton, set up in the feed do not have to feed alone. The feed ratio will not be more than 1.3:1 if it is specialized.
4: Easy to catch. Its habits are similar to those of chub, and it is not good at jumping. The catch rate of the first net is more than 90%!
5: Less condition. As long as it is parasitic. There are not many diseases appearing yet!