JPS602013B2 - House for colored cultivation of sea bream etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a house used for cultivating fish, and in particular provides a house for cultivating colored sea bream etc. which is suitable for coloring fish bodies such as sea bream.

Fish such as sea bream vary in the degree of coloration on the surface of their bodies depending on where they are caught, and light-colored sea bream are said to have particularly low commercial value.

As a result of research on the color development mechanism of fish bodies, the inventor found that sea bream caught in relatively deep sea areas where visible light does not reach have a strong degree of coloration, while sea bream caught in relatively shallow sea areas that are easily affected by visible light have a higher degree of coloration. It was discovered that the degree of color development was weak. The present invention has been proposed based on such research, and by installing a filter that blocks light in the visible wavelength range on the double-walled enclosure wall that surrounds the aquaculture pond, fish such as sea bream can be easily attacked. To provide a house for coloring aquaculture of sea bream etc., which can color sea bream, etc.

The present invention will be specifically described below based on embodiments shown in the drawings.

The aquaculture house shown in FIG. 1 has side walls 2, 2 and front and rear walls 21, 22 installed vertically on the surrounding floor 10 of an aquaculture pond 1 formed by concrete casting, and the upper ends of both side walls 2, 2. A closed chamber 20 is formed above the aquaculture pond 1 by covering the space with a ceiling wall 23.

Both side walls 2, 2, front and rear walls 21, 22, and ceiling wall 23 are
Each chamber is formed of a double wall consisting of an inner wall 3 and an outer wall 30, and an air chamber 31 surrounding the outer periphery of the sealed chamber 20 is formed between the inner and outer walls 3, 30, respectively. This double-walled house can be assembled in any manner, but in this example, one aquaculture pond
A plurality of inner frames 4 and outer frames 40 are installed vertically at substantially equal intervals on the surrounding floor 10, and a ceiling frame 41 is installed between the opposing inner frames 4 and 4 and between the outer frames 40 and 40, respectively. Inner and outer frames 4, 4
A vinyl sheet 5 is stretched over each side wall 2,
2. Front and rear walls 21, 22 and a ceiling wall 23 are formed.

FIG. 3 shows another embodiment, in which the upper and lower sides of the aquaculture pond 1 formed by the aquarium 11 are covered with side walls 2 having a double wall structure, respectively.
2. Front and rear walls (not shown), ceiling wall 23, and floor wall 24
It was surrounded by a circle.

In each of the embodiments described above, filters 6, 6 are stretched between the inner and outer walls 3, 30 of the side walls 2 and the ceiling wall 23, respectively.

This filter 6 uses, for example, an interference filter formed by combining a number of transparent thin films, and is configured so that half of the filter is wound onto the winding shafts 7 on both sides by rotating the handle 70. has been done. The filter 6 of this embodiment is an interference filter that blocks light in the visible range of wavelengths 300 to 70, but the filter 6G is not limited to this interference filter, and any filter such as a colored glass filter can be adopted.

However, if the filter 6 is extended from the side walls 2, 2 to the ceiling wall 23, only the visible light rays of sunlight entering the house will be blocked by the filter 6.

On the other hand, the temperature of the sealed chamber 20 is increased by this incident light, and the air chamber 31 between the inner and outer walls 3, 30 exhibits a heat insulating effect and performs a heat-retaining function day and night. This high-temperature environment allows farmed sea bream to eat a lot of food and gain weight, and the blocking of visible light promotes the development of color in the fish body. As described above, the present invention is equipped with a filter that blocks light in the visible wavelength range on the double-walled enclosure wall that surrounds the aquaculture pond, making it easy to color fish such as sea bream in the aquaculture pond. In addition to increasing the commercial value of fish, the enclosure wall's thermal insulation function creates a high-temperature environment that promotes the growth of fish.

Furthermore, since the filter is disposed between the inner and outer walls of the enclosure wall, the filter is completely protected and the performance of the filter does not deteriorate, achieving the objective of the invention.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the aquaculture house according to the present invention, FIG. 2 is a sectional view taken along the Rolo line in FIG. 1, and FIG. 3 is an explanatory diagram showing another embodiment. 1...Aquaculture pond, 2...Side wall, 21...
...Front wall, 22...Rear wall, 23...Ceiling wall, 6...Filter. Outside/Figure 62 Outside figure 3

Claims (1)

[Claims] 1. Form an enclosure wall surrounding the aquaculture pond with double walls inside and outside,
This is a colored cultivation house for sea bream, etc., equipped with a filter that blocks light in the visible wavelength range between the inner and outer walls of the enclosing wall.