Greenfin ma face puffer net cage culture feed feeding device and using method

Abstract

The present application relates to a kind of green fin Pterois marina cage culture feed feeding device and method for use, belong to the field of feed feeding device of aquaculture, the device includes net bag, sinker and suspension device, the net bag is the olive ball shape of diameter 40-100 centimeter, the upper end of net bag has a ring-shaped cable rope telescopic mouth, telescopic mouth diameter is 40-100 centimeter, lower end is closed design, bottom is equipped with sinker.The feed feeding device can be hung in the rope of the rope of the hook of the float or by two ends can be buckled hook and hung in the net cage suspension water.The present application device makes green fin Pterois marina fully feed feed, meet its normal growth nutritional requirement in the process of cultivation, guarantee the sustained and healthy development of green fin Pterois marina culture.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of feed feeding device of aquaculture, and particularly relates to a feed feeding device for green pectoral tuskfish cage culture and a use method. BACKGROUND

[0002] With the vigorous development of aquaculture, various kinds of inventions related to aquaculture are continuously innovated and applied.

[0003] Green pectoral tuskfish is mainly distributed in the East China Sea, the Yellow Sea and the Bohai Sea of China. Its fishing began in the 1960s, and became one of the bottom fish resources developed and utilized in China in the mid-1970s. After the 1990s, the resource quantity decreased seriously and could not meet the market demand. Green pectoral tuskfish has delicious meat and high nutritional value. Fishes with a size of more than 100g can be marketed. The by-products of processing can be used to prepare dried fish, fish meal and fish liver oil. In recent years, with the decrease of wild resource quantity of green pectoral tuskfish and the breakthrough of artificial breeding technology, the culture industry of green pectoral tuskfish has gradually emerged.

[0004] Since 2006, the artificial breeding experiment of green pectoral tuskfish has been carried out. Since 2015, the scale breeding of green pectoral tuskfish has been researched. After 12 years of persistent research, the scale breeding technology of green pectoral tuskfish fry has been broken through. At present, various modes such as factory workshop culture, pond culture and cage culture have been formed.

[0005] Before the present application is made, the feed feeding method of green pectoral tuskfish cage culture generally adopts artificial feeding. However, the location of the cage is far away from the coast, and the ocean current and wind wave are large, which makes a part of the feed lost to the outside of the cage due to the water flow, wind wave and sinking, so that the green pectoral tuskfish cannot fully feed and the nutritional supply is insufficient, resulting in a low survival rate of culture. Moreover, the feed floats on the sea surface, which is not convenient for the fish to feed, reduces the utilization rate of the feed and affects the economic benefit of the breeders and the healthy development of green pectoral tuskfish cage culture. At present, there is no such feed feeding device for cage culture designed in China, and there is no related technical report. SUMMARY

[0006] The purpose of the present application is to design a feed feeding device for green pectoral tuskfish cage culture and a use method, which can be applied to the marine cage culture of green pectoral tuskfish, so that the green pectoral tuskfish can fully feed and meet the nutritional demand for normal growth in the culture process, thereby guaranteeing the sustainable and healthy development of green pectoral tuskfish culture industry.

[0007] The present application is completed according to the following operation technology:

[0008] A kind of green fin mace puffer net cage breeding feed feeding device, the device includes net bag, sinker and suspension device, the net bag is 40-100 centimeters in diameter, the upper end of net bag has a ring-shaped cable rope expansion port, the diameter of expansion port is 40-100 centimeters, the lower end is closed design, the bottom is provided with sinker.

[0009] Further, the net bag is in the shape of an American football.

[0010] Further, the suspension device is a float with a hook. The upper end of the net bag is connected to a float with a hook, so that the net bag is suspended in water and can move with the water flow.

[0011] Further, the suspension device is a two-end detachable hook. One end of the two-end detachable hook is connected to the tightening port of the net bag, and the other end is connected to the rope on the net cage, so that the net bag can be fixed and suspended in water within a certain range.

[0012] The use method of the device is as follows: the feed of green fin mace puffer is placed in the net bag, the drawstring is tightened, the net bag is fixed and suspended in water within a certain range by using the float on the net bag or the two-end detachable hook hung on the rope of the net cage; the sinker below the net bag makes the feed completely immersed in the water body, fully increases the feeding area of the feed, facilitates the feeding of green fin mace puffer, and the feed gradually becomes smaller during the feeding process of green fin mace puffer, so that the net bag also shrinks until the feed is completely eaten.

[0013] The beneficial effects of the present application compared with the prior art are as follows: the present application is novel in design, scientific and practical, simple in device, and convenient to use, without the need for manual feeding, saving labor; the sinker of the feeding device can make the feed completely immersed in the water body, fully increase the feeding area of the feed, facilitate the feeding of green fin mace puffer, and as the feed gradually decreases, the net bag also shrinks until the feed is completely eaten, fully improving the utilization rate of the feed, reducing the loss of bait, reducing the cost of breeding, and increasing the economic benefits of breeders;

[0014] The net bag has a large number of holes and a smooth outer shape without nodules, facilitating the feeding of green fin mace puffer; the material of the net bag is high-density polyethylene (HDPE), which is resistant to aging and corrosion, can be used for a long time, and is relatively cheap, reducing the cost of breeding; a float can be hung above the feed feeding device, so that the feed is suspended in the net cage and moves with the water flow, facilitating the feeding of small fish; the detachable hook used in the device is more stable, safer and more convenient to operate than manual knotting, which reduces the labor intensity and improves the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the device of the present application;

[0016] Figure 2 It is a float with a hook;

[0017] Figure 3 It is a hook with buckles at both ends;

[0018] Figure 4 This is a schematic diagram of the structure of the device of the present invention loaded with feed;

[0019] Figure 5 This is a schematic diagram of the device of the present invention being suspended in a net cage by hanging floats;

[0020] Figure 6 This is a schematic diagram of the device of the present invention being suspended in a net cage via buckled hooks at both ends.

[0021] 1. Net bag, 2. Pendant, 3. Telescopic opening. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further explained below through examples, but the protection scope of the present invention is not limited in any form by the examples.

[0023] Example 1

[0024] A feeding device for green fin puffer fish cage culture, such as Figure 1 As shown, the device includes a mesh bag 1 and a pendant 2. The mesh bag 1 is in the shape of a rugby ball with a length of 80 cm and a diameter of 70 cm. The mesh bag is made of high-density polyethylene (HDPE). The surface of the mesh bag is smooth and has no nodules. The mesh size is 2 cm. The upper end of the mesh bag has a telescopic opening for a ring-shaped drawstring rope. The upper end of the mesh bag has a telescopic opening 3 for a ring-shaped drawstring rope. The diameter of the telescopic opening is 40-100 cm. The lower end is a closed design, and a pendant 2 is provided at the bottom.

[0025] A float with a hook is connected to the top of the net bag. Figure 2 As shown, the feed is suspended in water and moved with the water flow.

[0026] Or the upper end of the net bag is connected to a hook with two ends that can be buckled, with a 80 cm rope in the middle and two ends of the rope being hooks that can be buckled. Figure 3 As shown, one end of the buckled hook is connected to the tightening mouth of the net bag, and the other end is connected to the rope on the net box, so that the net bag is fixed and can be suspended in the water within a certain range.

[0027] Place the green fin puffer fish feed, such as fresh frozen fish or dough feed, in a net bag, tighten the drawstring, and use the float with a hook on the net bag or the rope with hooks at both ends to hang the feed on the net cage, so that the feed is suspended in the water of the net cage; the sinker under the net bag makes the feed completely immersed in the water, fully increasing the feeding area of ​​the feed, making it easier for the green fin puffer fish to feed, and the feed gradually becomes smaller during the feeding process, and the net bag will shrink accordingly until the feed is eaten. Figure 4 shown.

[0028] Example 2

[0029] Firstly, group the green pectoral puffer fish, artificial feeding is group A, and feeding device feeding is group B;Secondly, the weight gain rate and survival rate of the two groups of green pectoral puffer fish are measured every week respectively, and the data are recorded;Then, the pH value, dissolved oxygen, transparency, salinity and temperature of the seawater environment of the two groups are measured every week respectively, and the data are recorded;Finally, integrate the data and list, compare the advantages and disadvantages of the two groups.

[0030] The production and application of the present application will be described in detail by the following examples:

[0031] In 2023, the related experiments of the feed feeding device were carried out in the green pectoral puffer fish breeding area in Ningde Xiapu, Fujian, as shown in Figure 5 and 6 for one month. Purchase related materials and process into feed feeding device. The survival rate and weight gain rate of the two groups of green pectoral puffer fish fed by the feed feeding device and artificial feeding are measured and compared, and it is found that the feeding effect of the feed feeding device group is obviously higher than that of the artificial feeding group.

[0032] The green pectoral puffer fish feed feeding device is verified by green pectoral puffer fish breeding production practice, which proves that the feed feeding device can make the green pectoral puffer fish fully feed on the feed during the growth process, and can guarantee the success of green pectoral puffer fish breeding, improve the feed utilization rate, reduce the breeding cost and obtain good economic benefits.

Claims

1. A method for feeding a feed to a green puffer fish (Takifugu obscurus) in a net cage, the method comprising the steps of: The method uses a feeding device, which comprises a net bag (1), a sinker (2) and a suspending device, the net bag (1) has a diameter of 40-100 cm, the upper end of the net bag (1) has a retractable opening (3) of a ring-shaped drawstring, the diameter of the retractable opening (3) is 40-100 cm, the lower end is of a closed design, and the bottom is provided with the sinker (2); the suspending device is a float with a hook; the suspending device is a two-end buckling hook, the two-end buckling hook is connected by a rope, one end of the two-end buckling hook is connected to the retractable opening of the net bag (1), and the other end is connected to the rope on the net cage. ​ The method is to place the feed of ice-fresh fish or dough feed of the green pectoral snapper into the net bag, tighten the drawstring, use the float or the two-end buckling hook on the net bag to hang on the rope on the net cage, fix the net bag and make it suspend in water within a certain range; the sinker below the net bag makes the feed completely immerse in the water, sufficiently increases the feeding area of the feed, facilitates the green pectoral snapper to feed, and the feed gradually becomes smaller during the feeding process of the green pectoral snapper, and the net bag also shrinks, until the feed is completely eaten.

2. A method for feeding greenfin puffer fish in cage culture according to claim 1, characterized in that: The net bag is in the shape of an olive ball.

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