The pellet feed loses in the water and the fish has a high utilization rate, which can increase the growth rate of eating fish. However, the following points should also be noted when feeding fish with pellets:
1. Pay attention to choose different diameter pellet feed. Different sizes of fish should be fed pellet feeds of different diameters. Generally, fish with a body length of 4 to 6 cm should be fed a pellet feed with a diameter of 0.5 mm. For a fish with a length of 7–8 cm, a pellet feed with a diameter of 3 mm should be fed. .
2. Increase the number of feedings. The fish has no stomach, and the feed has a short residence time in the intestine. The utilization rate is not high. Therefore, when the total feeding amount is constant, the number of feedings should be increased and the amount of each feeding should be reduced, so that the fish can always be in a state of semi-starvation, which can improve feed utilization and reduce the feed coefficient.
3. Have a certain feeding area and time. In multi-variety polyculture ponds, squid and grass carp catch food fast, and the food intake is large. However, the head lice eat slowly, and the corresponding food intake is small, which often affects their growth. Therefore, the use of pellet feed must be carried out for a short period of domestication, so that the fish form a fixed food market, a fixed time of feeding habits, each feed should be sprinkled evenly, feeding time is not less than 30 minutes, feeding area 40 to 60 square Rice, so that each fish can eat feed.
4. Pay attention to adjust the feeding amount. The amount of feed should be appropriately increased or decreased according to changes in water temperature, because the water temperature is related to the feeding of fish, and the water temperature is high, and the fish eat more food, and vice versa. The water temperature is above 10°C, and the feeding amount can account for 3% to 4% of the total weight of the fish.
5. Add salt. In the production of pellet feed, 1% salt is evenly mixed in the raw materials to disinfect and sterilize fish diseases.
6. Pay attention to vitamin supplements. Because of the pellet feed during the production, vitamins have been damaged. Therefore, in the use of granular feed fish, should be fed a small amount of vitamin-rich green feed to supplement the lack of vitamins.
7. Reasonable fertilization. Feed pellet feed, because the water quality of the pool is relatively light, and it is not very good for the feeding of fertilized fish. Therefore, fish ponds fed with pellet feed should be rationally fertilized to promote the growth and reproduction of plankton, so as to increase the aquaculture production of fertilized fish.
8. Storage time should not be too long. The pellet feed contains 12% to 14% of moisture in the production process, and has a long storage time, and is easily deliquescence and moldy, which affects the use value of pellet feed. After feeding, the fish is susceptible to disease. It is best to produce while feeding.
9. Pay attention to the water quality and dissolved oxygen in the fish pond. When water quality is found to be bad, water should be added in time to improve the water quality of the fish pond. The dissolved oxygen per litre of water in the fish pond is generally required to be more than 4 milligrams. If it is less than 4 milligrams, the fish pond should be oxygenated.
The streaming rearview mirror is a new type of rearview mirror, which can transmit the rear picture to the rearview mirror through the camera next to the high-mounted brake light at the rear of the car.
The surface is extremely clear, and it feels that the field of vision behind the car is expanded by 2 to 3 times. The field of vision is also good during driving, which greatly solves the problem of the blind spot of the C-pillar.
Compared with the general traditional rearview mirror, it can illuminate various scenes behind the rear of the car more clearly, and the viewing angle is also very wide. If you feel that the screen is reflective, just adjust the rearview mirror to a non-reflective angle, because the position of the camera remains unchanged, so the displayed content will not change.
Advantages of streaming rearview mirrors
â— Reduce visual blind spots
â— Enhance night vision capability
Disadvantages of streaming rearview mirrors
â— Fear of the "blinding" phenomenon of the rearview mirror caused by dirt, there are certain safety hazards
â— Imaging distortion, which is easy to cause the driver to misjudge the distance of the vehicle
Therefore, when purchasing, be sure to choose a streaming media rearview mirror with qualified quality and brand protection. Sanan is a professional car product manufacturer, a trusted partner!
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SHENZHEN SANAN TECHNOLOGY CO.,LTD , https://www.sanan-cctv.com