Studies on the Activated Sludge of Food Industries for Animal Feed - Part2. Nutritive Value of Brewery's Activated Sludge -

맥주공장(麥酒工場) Sludge의 사료적(飼料的) 가치(價値)에 관하여 - 제2보(第二報) 식품공장 활성오니(活性汚泥)의 사료화에 관한 연구 -

This experiment was carried out to investigate the nutritive value of brewery's activated sludge on the performance and nutrients utilization of egg type chicken of babcock fed the different levels of sludge. The chemical composition, content of amino acids and mineral in brewery's activated sludge were also analyzed. 3,6,9 and 12% of brewery's activated sludge were supplemented with basal ration as a substituted ingredient to soybean oil meal in experimental ration. The results obtained were as follow: 1. Chemical composition analysis 1) Brewery's activated sludge had 42.50% of crude protein on the air dried basis, and had 15,69% of crude ash, and had 2,060 kcal of metabolizable energy per kg of sludge. 2) Total amino acid content of brewery's activated sludge was 42.50% and 99% crude protein of brewery's activated sludge was a true amino acid, and brewery's activated sludge contained especially more methionine and threonine that those of soybean oil meal. 3) In case of mineral content of brewery's activated sludge, phosphorus, magnesium, copper and iron were plentifully included. However, calcium content in brewery's activated sludge was very low. 2. Feeding trial 1) Body gain of chicken fed the different levels of sludge was decreased in proportion to increasing level of sludge was decreased in proportion to increasing level of sludge. However, no statistical differences were found out between treatments. 2) Diet intake of chicken fed the different levels of sludge was significantly (p<0.05) increased as the supplementation level of sludge in ration increased. 3) Feed conversion of chicken fed the different levels of sludge was high in proportion to increasing level of sludge in ration. However, there were no significant differences between treatments. 3. Digestion trial 1) Utilization of dry matter of chicken fed the different levels of sludge was decreased as the level of sludge in ration increased. However, no statistical differences were found out between treatments. 2) Utilization of crude protein of chicken fed the different levels of sludge was significantly (p<0.01) increased as the level of sludge was higher. Utilization of crude protein of control treatment and of sludge 3% treatment was higher than that of other treatments. 3) Utilization of crude ash of chicken fed the different levels of sludge was significantly (p<0.05) decreased in proportion to increasing level of sludge in ration. 4) Utilization of NFE of chicken fed the different levels of sludge was slightly decreased in proportion to increasing level of sludge in ration. However, no statistical differences were found out between treatments. Therefore according to this experiment, it may be concluded that brewery's activated sludge can be supplemented with chicken ration by $6{\sim}9%$.

맥주(麥酒) 공장폐수(工場廢水) 활성오니(活性汚泥)의 사료적(館料的) 가치(價値)를 구명(究明)하기 위하여 병아리 사료(飼料)에 활성오니(活性汚泥)를 3% 간격으로 12%까지 첨가(添加)하여 본시험(本試驗)을 실시(實施)하였던 바 다음과 같은 결과(結果)를 얻었다. 1 성분분석(成分分析) 시험(試驗) (1) 활성오니(活性汚泥)의 조단백질(粗蛋白質) 함량(含量)은 42,50%였고 조회분(粗灰分)은 15.69%였으며 ME 함량(含量)은 kg당(當) 2060 kcal였다. (2) 활성오니(活性汚泥)의 총(總)아미노산 함량(含量)은 42.24%로서 조단백질함량(粗蛋白質含量)의 99%가 순(純)아미노산(酸) 이었고 특(特)히 methionine과 threonine이 많이 들어 있었다. (3) 활성오니(活性汚泥)의 무기물함량(無機物含量)은 P,Mg, Cu, Fe등(等)은 충분(充分)하나 Ca는 상당히 부족했다. 2. 포양(飽養) 시험(試驗) (1) 병아리의 성장(成長)은 활성오니(活性汚泥)의 첨가수준(添加水準)이 증가할 수록 감소되는 경향이었으나 각처리간(各處理間)에 통계적(統計的)인 유의성(有意性)은 없었다. (2) 사료섭취량(飼料攝取量)은 활성오니(活性汚泥)의 첨가수준(添加水準)이 증가할 수록 매우(p<0.05) 증가했다. (3) 사료요구율(飼料要求率)은 활성오니(活性汚泥)의 첨가수준(添加水準)이 증가할 수록 증가했으나 각처리간(各處理間)에 통계적(統計的)인 유의성(有意性)은 없었다. 3. 대사시험(代謝試驗) (1) 고형물(圖形物) 이용률(利用率)은 활성오니(活性汚泥)의 첨가수준(添加水準)이 증가할수록 감소되는 경향이었으나 각처리간(各處理間)에 통계적(統計的)인 유의성(有意性)은 없었다. (2) 조단백질(粗蛋白質) 이용률(利用率)은 활성오니(活性汚泥)의 첨가수준(添加水準)이 증가 할 수록 매우 (p<0.01) 감소되어 대조구 및 3%구(區)가 6, 9. 12%구(區)에 비하여 조단백질이용률(粗蛋白質利用率)이 높았다. (3) 조회분(粗灰分) 이용률(利用率)은 활성오니(活性汚泥)의 첨가수준(添加水準)이 증가할수록 매우 (p<0.05) 감소되었다. (4) NFE 이용률(利用率)은 활성오니(活性汚泥)의 첨가수준(添加水準)이 증가할수록 약간 감소되는 경향이었으나 각(各) 처리구간(處理區間)에 통계적(統計約)인 유의성(有意性)은 없었다. 따라서 본시험(本試驗)에 의하면 맥주공장폐수(麥酒工場廢水) 활성오니(活性汚泥)를 병아리 사료(飼料)에 $6{\sim}9%$정도 첨가(添加)할 수 있을 것 같다.