Egg collector for artificially propagating loach

Abstract

The invention discloses a fish nest used for breeding loach artificially, which comprises a pot with an opening at the top and palm barks. The pot has a double-layer structure, a separation net with 10 to 15mm of meshes is fixedly arranged between an upper layer and a lower layer, and the middle part of the upper surface of the separation net is provided with an inducing fish nest. The palm barks are laid on the inducing fish nest. The lower layer of the pot is provided with an egg-collecting bed with mesh holes which are less than or equal to 120 meshes, and the area of the egg-collecting bed is larger than 90 percent of the area of the pot bottom. At least a net piece at one lateral side of the lower layer of the pot is connected with a pot body in demountable form. The fish nest of the invention can effectively prevent parent fishes from swallowing germ cells, and the egg grain at the bottom of the pot can also be collected, which further improves the hatch rate of the germ cells, improves the breeding quantity of unit parent fish, thus being convenient for using and having good application prospect.

Description

technical field [0001] The invention relates to a device for cultivating fish, in particular to a fish nest for artificially breeding loach. Background technique [0002] Loach is known as "Ginseng in Water", which is delicious, tender and nutritious. According to analysis, every 100 grams of loach meat contains 18.4 grams of protein, 2.9 grams of fat, and the content of vitamin B1, A, and C is higher than that of other fish. . In addition, loach is mild in nature, sweet in taste, and enters the liver, spleen and kidney. It also has high medical value. Therefore, in recent years, the export trade volume of loach has increased year by year, and the consumption of loach in China has also shown an upward trend. As natural loach resources are far from meeting people's consumption needs, loach aquaculture has entered a period of rapid development; at the same time, loach has become an important aquaculture object because of its strong adaptability, few diseases, high survival ra...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned artificial breeding method has the following disadvantages: 1. more than ten groups or even dozens of groups of broodstock are often placed in a net cage, and the spawning time of each female fish is inconsistent, so it is difficult to distinguish between spawning and non-spawning At the same time, the fishing behavior will also affect the spawning of other broodstock; ②If only one pair of broodstock is placed in a net cage, the efficiency of seedling breeding will be greatly reduced. In addition, because the spawning time of the broodstock cannot be accurate Therefore, it is difficult to grasp the timing of catching broodstock from net cages, and delayed catching will cause broodstock to swallow fertilized eggs, seriously affecting the number of fertilized eggs; and because loach is small and slippery, it moves quickly, which also causes certain difficulties to fishing work. Difficulty; ③Because the loach fertilized eggs are slightly sticky, they are easy to naturally debond and slide to the bottom of the box from the palm bark. In addition, the loach is naturally active, and under its violent swimming and stirring, most of the eggs slide to the bottom of the box. Because the eggs at the bottom of the box are difficult to collect, the number of eggs in the water cannot be controlled, and it is difficult to increase the hatching rate

Images