Loading patent…
OwnerShigeki Kamigauchi, Toru Sakimura +1inventors
InventorsShigeki Kamigauchi, Toru Sakimura, Satoko Uchida
Estimating the term…
Fry breeding method and apparatus are provided by which growth irregularity and lethal rate are reduced and a remarkably quick growth is enabled. A closed type fry breeding water tank 1 has a fry isolating function by meshes 1b, 1c. Breeding water prepared to have a high dissolved oxygen concentration by an artificial lung 3 is supplied into the fry breeding water tank 1 in a low flow rate that has little influence on the fry. The fry, especially those immediately after the hatching on which the dissolved oxygen is very influential, are bred in the streaming water, not in the stationary water as so far considered a common sense in the conventional case. Thereby, the growth irregularity that has so far not been overcome is suppressed and a remarkably quick, safe and secure growth is enabled.
A fry breeding method comprising the step of quickly, safely and securely growing fry by circulating breeding water prepared to have a high dissolved oxygen concentration in a closed type water tank.
A fry breeding apparatus comprising a means continuously supplying breeding water into a closed type breeding water tank to flow therein in a flow velocity of 0.1 to 3 mm/second and a means enhancing a dissolved oxygen concentration of said breeding water.
Dependencies are inferred from the claim text.