Animal husbandry – Entomological culture device – Egg treatment – production – or storage
Patent
1974-08-14
1976-04-20
Chamblee, Hugh R.
Animal husbandry
Entomological culture device
Egg treatment, production, or storage
43100, A01K 6100
Patent
active
039511049
ABSTRACT:
Use is made of the discovery that "near" ultra-violet radiation is effective in attracting large enough quantities of insects entirely from within the water to feed substantial numbers of animals without attracting flying insects from the air. Radiation from lamps producing predominantly "near" ultra-violet radiation, that is, radiation whose wavelength is between 3,000 and 4,000 angstroms, is directed into water in which insects live. The insects which are attracted by the radiation are fed to the animals. Preferably, the insects are attracted towards an insect enclosure with a downwardly-facing entrance in the water. A near ultra-violet lamp in the enclosure attracts the insects into the enclosure, from which they cannot escape into the air above the water. Fish or frogs in a cage are positioned below the enclosure to eat insects in or rising towards the enclosure. In one embodiment, only the lamp is used; the insects are numerous enough to allow some to escape and still feed substantial numbers of animals. It is preferred that the animals be concentrated in the cage at a density near that at which they are too crowded to grow properly. it is believed that the fish or other animals will catch most of the insects before they escape into the air. In another embodiment, the enclosure forms an airspace above the water, and a fan is used to draw the insects out of the enclosure and be collected for feeding land-based animals. Also disclosed is a system and method for grading or separating aquatic animals as to size without taking the animals out of the water. Two enclosures, such as two fish or frog cages, are separated by a wall with grading openings so that smaller animals can swim through the openings but large ones cannot. Means are provided for attracting the fish towards the enclosure into which it is desired for the smaller fish to go.
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