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부로일러에서 탈지미강의 가소화에너지 및 대사에너지 함량
고태송(T . S . Koh),조영석(Y . S . Cho),신동신(D . S . Shin),우경목(K . M . Woo) 한국축산학회 1992 한국축산학회지 Vol.34 No.4
Contents of digestible energy (DE), metabolizable energy (ME) and nitrogen-corrected ME (MEn) for a defatted rice bran were determined in day-old male broiler chicks fed basal (control) diet for the first 7 days were fed on the basal diet and diet composed of 70% of basal diet plus 30 % of defatted rice bran (rice bran diet) for the subsequent 14 days as the ratio of replacement for defatted rice bran. The defatted rice bran contained 2.509. 2.465 and 2.321 ㎉ of DE, ME and MEn per gram dry matter, in which 59.2% (DE/GE) of GE was digested, 56.7% (ME/GE) or 54.8% (MEn/GE) was metabolized and 95.8% (ME/DE) or 92.5% (MEn/DE) of DE was utilized. The rice bran diet contained significantly (p$lt;0.05) lower DE, ME and MEn of which DE/GE and ME/GE was decreased significantly (p$lt;0.05) compared with those of basal diet. The rice bran diet decreased (p$lt;0.05) daily gain, feed efficiency (gain/feed) and retentions of protein and lipids though feed intake was not affected. Rice bran diet did not affect excretion of urinary nitrogen per nitrogen intake (UN/Nl) and decreased significantly (p$lt;0.05) digestibility of protein (AN/Nl) and nitrogen balance (NB) per NI (NB/Nl). Also BV of protein (NB/AN or NR/AN) and digestibility of lipids were decreased in birds fed on the rice bran diet. The results indicate that the low energy content of defatted rice bran was due to mainly the decreased digestibility of protein and digestibility of energy in defatted rice bran diet.
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