報告書番号

480012

タイトル（和文）

畜産廃棄物利用のための処理処分に関する研究（その２）－家畜排泄物のクローズド処理シスムと高栄養飼料生産法－

タイトル（英文）

STUDIES ON THE DISPOSAL OF LIVESTOCK WASTE FOR ITS RECYCLIC USE -FEED PRODUCTION FROM THE LIVESTOCK WASTE IN THE CLOSED TREATMENT SYSTEM-

概要 （図表や脚注は「報告書全文」に掲載しております）

畜産における省資源と環境保全に対処することを目的として，乳牛の糞尿を飼料化利用するクローズド処理システムを構想した。乳牛の糞尿の飼料化は糞尿をまず搾汁して，固分と液分に分ける。固分は床土材として，この上で牧草を施設内で短期促成栽培し，乾燥して粗飼料化する。これを単独にあるいは配合飼料と混合した複合飼料として乳牛に給与する。液分には光合成細菌を培養し蛋白質，ビタミン等が豊富な菌体を含有する飲料水として乳牛に与える。これらによって得られる乾物量は乳牛の必要量の約２０％，可消化養分総量（ＴＤＮ）の約１９％，可消化粗蛋白質（ＤＣＰ）の約３０％であった。本システムの実用化には経済性，再生した飼料と飲料水の安全性の確認とシステムの装置化の完成が必要である。

概要 （英文）

THE RAPID INCREASE IN THE NUMBER OF LIVESTOCK RAISED IN JAPAN HAS CAUSED SERIOUS ENVIRONMENTAL POLLUTION. THE CLOSED TREATMENT SYSTEM OF LIVESTOCK WASTE AIMED TO USE THE WASTE MATERIAL AUSEFUL RESOURCES FOR LIVESTOCK FEED AND ENERGY. THIS PAPER REPORTED ABOUT FEED MANUFACTURE FROM THE COW MANURE AND THE FEED VALUES. COW MANURE IS SEPARATED INTO SOLID AND LIQUID PHASES WITH A MANURE SEPARATOR. ABOUT FORTY PERCENT OF THE SOLID PHASE WAS RECOVERED AND WAS USED TO PRODUCE FOR SHORT-TERM CULTIVATION OF EARLY MATURING GRASS(TEFF), WHICH WASSUBSEQUENTLY HARVESTED WITH THE ROOTS INTACT AND DRIED. THE LIQUID PHASE WAS USED AS A MEDIUM FOR THE CULTIVATION OF PHOTOSYNTHETIC BACTERIA(PSB) WHICH WERE ADMINISTERED TO THE ANIMALS IN DRINKING WATER. THE NUTRITIVE VALUE OF THE LIQUID WAS RAISED WHEN PSB RICH IN PROTEIN WERE CULTURED IN THE LIQUID. THE FOLLOWING RESULTS WERE OBTAINED; 1.THE SOLID PHASE WAS APPLIED TO FIELDS FOR CULTIVATION OF EARLY MATURING GRASS. THE HARVESTED GRASS WAS FOUND TO BE MOREPALATABLE TO THE LIVESTOCK BY MIXING WITH GRAIN. THE SOLID PHASE INCREASED TOTAL DIGESTIVE NUTRIENTS(TDN) 50% AND DIGESTIVE CRUDE PROTEIN(DCP) 66% IN THE HARVESTED GRASS. 2.THE VOLATILE ACID CONCENTRATION OF THE LIQUID USED FOR PSB CULTIVATION WAS AJUST TO 500, 1000, 1500 AND 2000 PPM, THESE FOUR SAMPLE MEDIUMS PRODUCED 0.38, 1.5, 2.5 AND 2.8 G/L OF PSB RESPECTIVELY FOR FIVE DAYS CULTIVATION. 3.EACH DAIRY COW GAVE AN AVERAGE OF 2.7KG OF DRIED SOLID MATTER PER DAY.THIS AMOUNT OF SOLID PRODUCES 3.4KG OF DRIED FEED WHEN USED FOR CULTIVATION OF FEED GRASS.AN AVERAGE OF 106.5L OF LIQUID WAS OBTAINED PER DAY FROM EACH ANIMAL.FORTYEIGHT LITERS OF THE LIQUID WASTE PRODUCED 134G OF DRIED PSB.THIS AMOUNT IS EQUIVALENT TO 18% TDN AND 31% OF DCP IN DAIRYCOW FEED.

報告者

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