Business to cultivate marine products in the land（水産物を陸上で養殖する事業）

The Tokyo ocean University starts business to cultivate the marine products such as a tiger puffer and the flatfish in the land around Kuji-shi, Iwate. I am at one and maintain the biomass generation facilities using the cock feces that the capacity goes out of a water tank of 100 tons in total and the neighboring poultry farms. I control the temperature management cost of a water tank assumed a land cultured weak point using the electricity which generated electricity and exhaust heat to be generated. I push forward business experimentally for several years and am a plan to transfer business in the new company where local suppliers finance.
I start the design of the cultured institution in September. A plan to maintain a water tank of 100 tons of one seed and sapling tank of 10 tons to raise two upbringing tanks of 45 tons of capacities to raise an adult fish and fry in total. The expense anticipates approximately 300 million yen. I apply for a subsidy of Ministry of Education, Culture, Sports, Science and Technology in June to allot it for a maintenance expense.
Approximately 600 square meters of sites which area is necessary for can go ahead through the negotiations with a course to borrow from a stockbreeder around Kuji-shi gratis. It is said that I squeeze the proposed site including the adjoining land of the poultry farm where cock feces becoming the fuel of the biomass generation appear to several places. The fish class to produce examines an expensive tiger puffer or flatfish.
The company which does not have fishery right can enter it, and Nippon Suisan deals with the land culture in Oita in the whole country. It is hard to receive an external factor including a red tide and the stormy weather, and it is said that yield is higher than conventional culture, and I shorten a cultured period, and it is raised productivity by water temperature adjustment. There is the advantage not to receive damage by rumors with radiological diffusion after an earthquake disaster.
On the other hand, how do control heat source cost to account for 40% of the driving expense by the normal land culture; a problem? Therefore Doshisha University applies cock feces going out of the poultry farm around Kuji-shi in biomass generation and is a plan to control an electricity bill to 20% of the whole driving expense using the electricity which generated electricity and exhaust heat to occur.
According to the hearing investigation of the university, the cock feces which a stockbreeder discards around Kuji-shi amount to approximately 60,000 tons a year. I am stable at around 1,500 kilowatts, and it is said that it is a scale to be able to attain.
I push forward business experimentally in several years and will demonstrate a technical aspect and profitability in future. During this time, a plan I raise financing from a local fishermen's cooperative association and fisheries processing company, a stockbreeder and establish a new company, and to transfer business. I connect it with revival of the cultured work from East Japan great earthquake disaster and promotion of the local stock-raising industry. I want to make the model that can conjugate in Fukushima troubled with damage by rumors.
If a land cultured model can do it, I apply it, and other areas can unfold. I may go into the world. The marine products including a fish will be important as future food resources of the human.




東京海洋大学は岩手県久慈市周辺でトラフグやヒラメといった水産物を陸上で養殖する事業に乗り出す。容積が計100トンの水槽と周辺の養鶏場から出る鶏ふんを使ったバイオマス発電設備を一体で整備する。発電した電気や発生する排熱を使って陸上養殖の弱点とされる水槽の温度管理コストを抑える。数年間は試験的に事業を進め、地元業者などが出資する新会社に事業を移管する計画だ。
　９月にも養殖施設の設計に着手する。成魚を育てる容積45トンの育成槽２つと、稚魚を育てる10トンの種苗槽１つの計100トンの水槽を整備する計画。費用は約３億円を見込む。整備費用に充てるため、６月に文部科学省の補助金を申請する。
　約600平方メートルの広さが必要となる用地は久慈市周辺の畜産業者から無償で借りる方向で交渉を進めている。バイオマス発電の燃料となる鶏ふんが出る養鶏場の隣接地など、候補地は数カ所に絞っているという。生産する魚種は価格の高いトラフグやヒラメなどを検討している。
　陸上養殖は漁業権を持たない事業者も参入でき、全国では大分県で日本水産が手がける。赤潮や荒天など外的要因を受けにくく、従来の養殖よりも歩留まりが高いとされるほか、水温調節により養殖期間を短縮して生産性を高められる。震災後は放射性物質の拡散に伴う風評被害を受けない利点もある。
　一方で通常の陸上養殖では運転経費の４割を占める熱源コストをいかに抑えるかが課題。そこで同大は久慈市周辺の養鶏場から出る鶏ふんなどをバイオマス発電に活用、発電した電気や発生する排熱を利用して電気代を運転経費全体の２割に抑える計画だ。
　大学の聞き取り調査によると、久慈市周辺で畜産業者が廃棄する鶏ふんは年間約６万トンに上る。1500キロワット程度を安定して出せる規模だという。
　今後は数年間で試験的に事業を進め、技術面や採算性を実証する。この間に地元の漁協や水産加工会社、畜産業者などから出資を募って新会社を設立し、事業を移管する計画。東日本大震災からの養殖業の復興と地元畜産業の振興につなげる。風評被害に悩む福島県などでも活用できるモデルにしたい考えだ。
　陸上養殖のモデルが出来れば他の地域にも応用展開できますね。世界へも進出できる可能性もありますね。人類の未来の食料資源として魚を含めた水産物は重要でしょうね。