CN2182518Y

CN2182518Y - Intensive and three-D culture equipment for river crab

Info

Publication number: CN2182518Y
Application number: CN93237691U
Authority: CN
Inventors: 顾为东
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-29
Filing date: 1993-09-29
Publication date: 1994-11-16
Anticipated expiration: 2003-02-20

Abstract

The utility model relates to intensive and three-D culture equipment for river crabs, which is mainly used for the indoor culture of river crabs and composed of a culture pond for crab seeds and a culture pond for juvenile and adult crabs, wherein, a net cage 7 is arranged in the culture pond for crab seeds 1, and a three-D nest 2 is arranged in the net cage 7, and the three-D nest 2 has an entity structure in a shape of a rectangle or a trapezoid or steps and is provided with multi-layer and a plurality of through holes 3 or impassable cave holes 4. By using the utility model for river crab culture, multi-layer three-D culture is achieved; the utility model can increase the equipment utilization rate by a big margin and increase the yield per unit in multiples; owing to the effective control of the growth condition, the survival rate of crabs is enhanced.

Description

Intensive and three-D culture equipment for river crab

The utility model is the cultivator about a kind of river crab.

The mode of cultivating river crab still is open-air the breed in production practices at present, be subjected to the influence of natural environment, cultivate water and variations in temperature are bigger, natural enemy is many, especially be more vulnerable to the injury of natural enemy in the river crab shelling phase, make the river crab survival rate be lower than 5%, artificial releasing's rate of recapture less than 1%, breeding cycle is long simultaneously, needs 2 years just can reach the commodity crab specification.Also once occurred the practice of carrying out hot house artificial environment cultivating river crab indoor in recent years, and improved the survival rate of river crab, and shortened growth cycle, but also little owing to cultivation density, unit cost is high, low the failing of economic worth promoted.

The purpose of this utility model is the three-dimensional intensive culture device of river crab a kind of simple in structure, that cultivation density is high that designs in order to overcome above-mentioned deficiency.

Technical solution of the present utility model is as follows:

The three-dimensional intensive culture device of a kind of river crab, it is cultured Chi Heyou, is become crab breed pond to form by juvenile crab:

In juvenile crab is cultured the pond, net cage is housed, the outstanding three-dimensional nest that is placed with at least more than one in the net cage;

Characteristics of the present utility model are open-air cultivating river crab to be introduced the indoor three-dimensional nest that intensifies culture, Artificial Control river crab growing environment, be equipped with special complete feed again, avoided hostile its injury in river crab sky, realized the high-quality high-density rearing of river crab, formed I, II phase children crab survival rate up to 40-65% from juvenile crab; Survival rate when forming the only young crab of 40-80 per jin reaches 40-60%, forms commodity crab (100 grams/only) on this basis, and survival rate reaches more than 75%, the rate of recapture nearly 100%.Owing to significantly improve cultivation density, economic benefit is very remarkable.Three-dimensional nest of the present utility model also can be applicable to open-air pond half congealed, enclose in beach, the purse seine culture of Chinese mitten crab.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the utility model juvenile crab pond structure schematic diagram;

Fig. 2 is the three-dimensional nest schematic diagram of the utility model through-hole type;

Fig. 3 is the three-dimensional nest schematic diagram in hole, the two-way cave of the utility model.

As Fig. 1, Fig. 2, shown in Figure 3, juvenile crab of the present utility model is cultured on the pond 1 and has inlet opening 5 and apopore 6 respectively, they are communicated with water inlet pipe and outlet pipe respectively, treated water is introduced indoor juvenile crab cultures in the pond 1, in juvenile crab is cultured pond 1, on the outstanding net cage of putting 7 layer stereo is installed and cultures nest 2, leave spacing between each layer three-dimensional culture nest 2, and place some groups of nests 2 according to the size of culturing pond 1, the degree of depth of culturing pond 1 is 0.4 to 1.2 meter, its length is determined by careat, the number of plies of three-dimensional culture nest 2 generally can be determined the layer at 3-9 according to the depth of water, and its top generally is a 0.1-0.6 rice under water, and can be used as the feeding platform and use.The shape of three-dimensional nest 2 can be rectangle, trapezoidal or stairstepping solid structure, has a plurality of through holes 3 of multilayer on it; Also can be rectangle, trapezoidal or stairstepping solid structure, have a plurality of holes, cave 4 that do not communicate of multilayer on it.Upwards be connected with a circle in the upper end that juvenile crab is cultured net cage 7 in 1 and prevent escaping film 8, in case juvenile crab is fled from.

In the juvenile crab phase, juvenile crab is placed on juvenile crab cultures in the fish culture net cage 7 in the pond, juvenile crab can climb in the through hole 3 or hole, cave 4 of three-dimensional nest 2.Special perfect compound feed is thrown in the pond on the feeding platform, and discharge by apopore 6 at the water source that polluted by feed etc., and 5 introduce fresh water source again from the inlet opening, through the artificial feeding in a stage, can form young crab and move to the children, become crab to culture the pond.

Claims

1, the three-dimensional intensive culture device of a kind of river crab, it is cultured Chi Heyou, is become crab breed pond to form by juvenile crab, it is characterized in that:

The outstanding net cage 7 that is equipped with in juvenile crab is cultured pond 1, the outstanding three-dimensional nest 2 that is placed with at least more than one in the net cage 7.

2, by the three-dimensional intensive culture device of the described river crab of claim 1, it is characterized in that three-dimensional nest 2 for rectangle, trapezoidal or stairstepping solid structure, has a plurality of through holes 3 of multilayer on it, constitute three-dimensional nest 2.

3, by the three-dimensional intensive culture device of the described river crab of claim 1, it is characterized in that three-dimensional nest 2 also can be on rectangle, trapezoidal or stairstepping solid the two-way a plurality of holes, cave 4 that do not communicate of multilayer that have, constitute three-dimensional nest 2.

4,, it is characterized in that the upper end of net cage 7 in juvenile crab is cultured pond 1 upwards is connected with the anti-film 8 of escaping of a circle by the three-dimensional intensive culture device of the described river crab of claim 1.