Popularization and Application of Feeding Machine in Aquaculture

I. the role of fishing bait machine in aquaculture

The main results are as follows: 1. The application of bait feeding machine is beneficial to promote the popularization of full price compound feed.

The application of bait feeding machine and full-price compound feed belong to the category of scientific fish culture. One of the most important advantages of compound feed is to combine all kinds of single feed to form a nutritionally comprehensive and economical mixed feed according to the nutritional needs of farmed varieties, so as to avoid the imbalance of nutrients in single feed.

Some farmers realize the importance of formula feed for scientific fish culture, and also choose formula feed, but do not use bait machines, but still traditionally put formula feed into the water to feed fish. Due to the small feeding surface and high water solubility, the feed loss will be 15% and 20% more than that of bait machine. Good feed can not be used correctly, so that the benefit of breeding can not be reflected.

2. Domesticate fish to feed on the water surface and reduce the feed coefficient.

One of the advantages of domesticating fish to feed on the surface is that it can reduce the feed coefficient (that is, save the cost of feed). At present, eels and soft-shelled turtles with the largest scale and highest output value in freshwater aquaculture in China adopt the method of feeding on the water surface, because the dissolved oxygen and water temperature on the surface of the water surface are much higher than those at the bottom, and the higher the dissolved oxygen and temperature of fish in the suitable range, the higher the feeding intensity and digestion and absorption rate, of which the digestion and absorption rate is 20% and 30% higher.

(fish come to the surface for food)

In addition, fish feed on the surface of the water, the feed stay in the water for a short time, so the amount of feed dissolved in the water is very small, generally about 5%, while the manual feeding or traditional submerged water feeding method has a loss rate of 15%. 20%. This is the performance that bait feeding machine can produce economic benefits most directly in aquaculture.

3. The use of bait machine meets the requirements of multi-meal feeding in scientific fish culture.

In order to ensure the better and faster growth of fish, common freshwater farmed fish generally need multiple meals and bait, while artificial feeding can only be fed 1-2 times a day, if fed many times a day, the culture area is large, it will require a lot of manpower, and the feeding machine can be fed 4-6 times a day. 80% full, so that under the premise of ensuring that feed is not wasted, fish can eat more feed, so as to achieve better and faster growth.

4. the correct application of bait feeding machine can reduce the incidence of diseases and improve the quality of fish.

In fish ponds without baiting machines, due to the high feed loss rate, the feed organic matter sunk at the bottom of the pond and dissolved into the water body rotted and deteriorated, which exceeded the purification capacity of the pond itself, resulting in the growth of harmful bacteria and the enrichment of toxic gases. Fish are easy to be infected with bacteria, diseases and insect diseases, and the water body is very unsuitable for the physiological requirements of fish growth, affecting the growth rate. It can even lead to extinct deaths such as malignant flooding and explosive diseases.

(the pneumatic bait feeding machine shows the disc for feeding feed)

On the other hand, in the pond where the compound feed is fed with the bait machine correctly, there is basically no residual feed at the bottom, and a small amount of fish manure and feed powder dissolved in the water can be self-purified by the pond water with good water quality, and the pond can always maintain a good ecosystem, so there are fewer fish diseases and less medicine. drugs can also choose mild and non-irritating drugs, so that the produced fish can meet the green pollution-free standard and improve the quality of fish.

5. The correct application of bait feeding machine can greatly improve the breeding skills of farmers.

Because the fish can be domesticated to the surface to feed by using the bait machine, the specification, growth rate, feeding intensity and quantity of fish can be seen clearly, and all these changes are due to weather changes, water quality changes, air temperature changes, drug use, feed quality and other factors. As long as farmers are diligent in observing, recording and analyzing these causal relationships, it is not difficult to find out the entry point of artificially controlling fish growth, diseases and other problems, and rapidly improve their breeding skills.

2. Selection and use of bait feeding machine

1. The type of bait feeding machine

At present, there are three main types of bait machines on the market, depending on the power.

First, the use of voltage 220V bait machine, widely used in ponds, reservoirs, is currently the most used one, there are large, medium and small specifications.

The second is a small bait feeding machine that does not need power, which is suitable for small cages and factory breeding.

Third, the battery is powered by direct current, which is suitable for remote and sporadic fish ponds with inconvenient power supply.

2. The structure and working principle of bait feeding machine.

The bait feeding machine is composed of an electric motor, a throwing plate, a blanking funnel, a mixer, a blanking control piece and a machine shell, etc. When working, the motor decelerates through the belt wheel to drive the throwing plate and the mixer to rotate, and the feed through the mixer falls into the tray through the blanking control chip and the blanking funnel, which is thrown out of the machine by the blade and directed into the pool.

The feed is fan-shaped and scattered in the fish pond, and it can also be fed in 360 °direction. The feeding machine can control the feeding times, duration and feeding amount, and has a high degree of automation. The power of the main motor is generally 30-100W, the feeding distance is 2-18m, the volume of the material box is 60-120kg, and the use area of each feeding machine is 0.33-1.33HM.

3. The use of bait feeding machine

(1) choose the appropriate location. The bait feeding machine must face the open side of the fish pond and be placed on the springboard 3-4 meters offshore, which is 20-30 cm high from the highest water level of the pond.

(2) in the process of production management, attention should be paid to the changes of weather, water temperature, water color and fish feeding, and the feeding quantity, frequency and duration of the feeding machine should be adjusted in time to ensure that fish get sufficient feed without causing feed waste.

(3) domesticate the habit of floating fish for food. In the domestication stage, there should be less casting and slow casting, the interval time can be adjusted to more than 10 seconds, and each feeding time can be extended to 3-4H.

The domestication period of fish is not only related to the water temperature, but also closely related to the fat and thin water quality and the stocking pattern. The water quality is thin and the domestication period is short, otherwise it is long. The big bully the small, the strong bully the weak, this is the law of the survival of the fish. It only takes 10-15 days for the main fish with the same specifications to be released, and the fish will float for food.

(4) the instruction manual should be read carefully before using the bait machine. Bait machines are close to the water surface when in use, so we must pay attention to the safety of electricity. If there is a failure of the bait feeding machine, you should contact the manufacturer (or dealer) in time and do not disassemble yourself so as to avoid danger and expansion failure.

Postscript:

Scientific use of automatic bait feeding machine in fish pond