METHOD AND APPARATUS FOR RAISING FRY

• Main Authors: UCHIDA TOMOKO, KAMIGAICHI SHIGEKI, SAKIMURA TORU
• Format: Patent
• Language: English
• Published: 25.11.2003
• Edition: 7
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; FORESTRY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; HUNTING; NEW BREEDS OF ANIMALS; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRAPPING

PROBLEM TO BE SOLVED: To provide a method for raising fries, with which dispersion of growth and a case fatality rate are reduced and the fries extremely rapidly grow and an apparatus therefor. SOLUTION: Raising water having a high dissolved oxygen concentration is supplied to an enclosed type fry raising water tank 1 equipped with a fry isolation function by meshes 1b and 1c by using an oxygenator 3 at such a low flow rate as not to affect the fries. Especially a raising method in still water which is regarded as a common sense in the conventional method for fries immediately after hatching to be greatly affected by high dissolved oxygen is changed to a raising method of flowing water type. Consequently, the dispersion of growth which is not overcome by the conventional method is controlled and the fries extremely rapidly, safely and surely grow. COPYRIGHT: (C)2004,JPO